TRX250R.ORG
Workshop => Carburetor, Intake, and Exhaust => Topic started by: troybilt on July 18, 2015, 07:14:51 PM
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Here is some pics of my prototype intake designed SPECIFICALLY for the TRX250R, with 38 and larger carbs, also uses the MUCH larger 06plus TRX450R filters. Dyno work and flow bench testing to come soon.
Progress!
(http://forums.trx250r.org/vbulletin_imports/47_5786_2017-04-18_8689.jpg)(http://forums.trx250r.org/vbulletin_imports/47_5787_2017-04-18_1947.jpg)(http://forums.trx250r.org/vbulletin_imports/47_5788_2017-04-18_6993.jpg)(http://forums.trx250r.org/vbulletin_imports/47_3721_2017-04-18_6087.jpg)(http://forums.trx250r.org/vbulletin_imports/47_3720_2017-04-18_2402.jpg)
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sweet! im excited to see results.
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Dyno work and flow bench testing to come soon.
Are you making these soon or are you just testing the one you have? Thanks, Troy, I am looking for one for the minitooth to attach to the smart carb
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Cool
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Yes fairly soon as in fall time frame. The CF will be sooner then HDPE to follow
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Nicely done Troy! Looking forward to seeing results and pricing.
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What ever happened to the KX 500 powered quad? Sorry to hijack just curious
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It's still sitting on my work bench. That's my Bro-in-law's bike and he needs to get back in high gear on it!
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You sir are doing some cool stuff
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Looks sweet! Is this gonna work with a stock airbox?
Sent from my Galaxy S5
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This will work with my Aluminum airbox. I'll have to do a different intake to work with the stock box. Doable forsure.
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The airbox will mimic this design I have for the TRX450R. Nice thing about this box is you can run it as an "airbox eliminator" or as a complete airbox, I think an airbox that can be configured for different riding conditions is key. To start they will be vented as shown. I'm working with another company in the snowmobile world that makes hydrophobic mesh, so the vents will be covered with this mesh. Looks like outerwears material except it doesn't let water, mud or snow in.
(http://forums.trx250r.org/vbulletin_imports/47_5799_2017-04-18_4368.jpg)
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I would love to test one of these out asap. Wonder how well it would fit my no-link
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That airbox looks awesome as well! Might need to get the package deal when your done
Sent from my Galaxy S5
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Side note - all posts relating to the detour on Photobucket images not displaying can now be found in their own thread located here:
Images Not Showing Up In Thread - Settings Option to "Show Images" (http://trx250r.org/threads/6053-Images-Not-Showing-Up-In-Thread-Settings-Option-to-quot-Show-Images-quot?p=56190#post56190).
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Good work Troy. Looking forward to getting one.
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Now this is awesome progress Troy! Great to hear.
The airbox will mimic this design I have for the TRX450R. Nice thing about this box is you can run it as an "airbox eliminator" or as a complete airbox, I think an airbox that can be configured for different riding conditions is key. To start they will be vented as shown. I'm working with another company in the snowmobile world that makes hydrophobic mesh, so the vents will be covered with this mesh. Looks like outerwears material except it doesn't let water, mud or snow in.
(http://forums.trx250r.org/vbulletin_imports/47_5799_2017-04-18_3807.jpg)
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Big pain in the azz is the smart carb. The intake tube must be 3/4" shorter to use the stock airbox or that configuration. It has to do the the mounting tabs on the stock frame. Not easy to move 3/4"
A specail thanks to Troy for doing all this R&D. I am sure he has a thousand hours into THIS
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Awesome work. Looking forward to seeing the results on this. Some of you guys are doing great things to keep our beloved bikes alive. Is this made from the same materials as the oem boots or a different material?
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UPP out there in Tony's neck of the woods does the polyurethane rubber stuff for me. When I had my 496cc Saber motor, the intake signal would nearly collapse the rubber intake tubes. I can do PU material (similar to stock), the issue I found is its not as cost effective as high density plastic or even Carbon fiber. With the plastic the filter can clamp directly to the tube, versus having some billet aluminum flange made. However, to work with stock airbox the PU would be the way to go off course. Thing to remember is this isn't just a stock replacement intake tube, this actually will give a big bump in performance. The one I've done for the yfzr was nearly 2-2.5hp improvement, and still finding more. I have my own dynojet dynamometer so I will know exactly what improvements can be made.
Also intake pulses are timed just like on the expansion chamber side. Key is getting the earliest intake pulse to return to the intake side of he cylinder around the same time as when the piston just drops past the intake ports, (volumetric efficiency). Again, just like the expansion chamber side, Length, taper and volume of the intake tube factor into this, and can change whether an intake is low, mid or top end range, etc... With that said, even with all the various methods or equations for calculating this it gets fairly complicated cause the intake tubes are rarely just a simple tapered pipe, they have kinks and bends and large transitions etc... Even with the engine simulation software I use, it assumes the intake is a simple tapered pipe. I've read some interesting papers on this topic where an oscilloscope and a microphone was used measure the pulse timing. I've thought about getting some of that equipment and trying it myself. For now I do "best" guess then hit the flowbench and dyno, but I'd like to have a more scientific approach to it. I do have a kickass Somat data aquisition computer, that I'm working on installing ultra high speed pressure transducers in the intake tube coupled with an analog rotary gauge. I'd like to be able to plot intake pressure vs. crank angle. This is very doable and I just need a little more time to get this all figured out.
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Now that Troy is most excellent.
The airbox will mimic this design I have for the TRX450R. Nice thing about this box is you can run it as an "airbox eliminator" or as a complete airbox, I think an airbox that can be configured for different riding conditions is key. To start they will be vented as shown. I'm working with another company in the snowmobile world that makes hydrophobic mesh, so the vents will be covered with this mesh. Looks like outerwears material except it doesn't let water, mud or snow in.
(http://forums.trx250r.org/vbulletin_imports/47_5799_2017-04-18_1984.jpg)
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Thanks Sky!
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What's the difference between yours and the fci? They seem quite similar.
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What FCI? They've never done a 250r intake until recently. I believe I've had my design a lot longer...
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What FCI? They've never done a 250r intake until recently. I believe I've had my design a lot longer...
:respekt:
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I posted pics of my design 8 months ago so go pound sand. http://trx250r.org/threads/4730-New-Intake-Airbox-from-ROBL-Engineering-Would-you-be-interested?highlight=Intake
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Troy started this over a year ago. Last month we saw Fuel customs attempt to copy Troys design. http://trx250r.org/threads/5938-New-intake?highlight=fuel+customs. Go ahead and spend $200 on a unproven intake system. I will wait for Troy as he will be testing what he makes and revising with improvements.
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When reading your post it started sounding like Arlan explaining his port timing and shit. One of each please ....Git-R-Done already! So glad you followed through on the R parts.
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I posted pics of my design 8 months ago so go pound sand. http://trx250r.org/threads/4730-New-Intake-Airbox-from-ROBL-Engineering-Would-you-be-interested?highlight=Intake
I apologize I never saw this tread, it looks like a great product. Sorry for asking a basic question.
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Seemed like a rhetorical question and more of an accusation. If you really looked at the pics the differences in shape are quit obvious. I get the same crap on the 450r forums. Secondly, the pics I just posted are of a 3d printed intake that is strictly for prototype and testing purposes. I had a 1200 bill from a mistake of running my 450 a little too long with a 3d printed intake. Dyno testing and flow bench testing only. Lastly, my ideas for a new intake for the R date back to 2010, when I started build Elsinore. It seemed like using the same intake for a 249cc motor with a 496, was probably not s good idea. The rest is history.
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Seemed like a rhetorical question and more of an accusation. If you really looked at the pics the differences in shape are quit obvious. I get the same crap on the 450r forums. Secondly, the pics I just posted are of a 3d printed intake that is strictly for prototype and testing purposes. I had a 1200 bill from a mistake of running my 450 a little too long with a 3d printed intake. Dyno testing and flow bench testing only. Lastly, my ideas for a new intake for the R date back to 2010, when I started build Elsinore. It seemed like using the same intake for a 249cc motor with a 496, was probably not s good idea. The rest is history.[/QUOTE
All I asked is how it compares to other intakes. But if it makes u happy to freak out on someone u don't know go for it bro. God bless
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Is there a release date or prototypes made? Love the style. Have a FCI on my YFZ and it woke it up with dasa exhaust so I only imagine yours with smooth lines and better finish(no rough edges, casting/molding flash). Keep it up Troy
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No release date yet per'se, I need to get on the testing dyno and other testing also need to finish designing the modular airbox the one pictured is for the 450r. If all goes well, and I should have a released version this fall. I could have Carbon fiber much sooner, but I'm looking into buying my own thermoforming equipment so I can make these in a High Density Polyethylene as well.
Yes the FCI on the YFZR does make a nice improvement, I've been measuring nearly 2hp over a prodesign setup. I have dyno comparisons on my yfzr with the FCI and about 7 different intakes I've designed. I have one that matches the FCI, but I think there is more room to go, we'll see anyway. Here is the best of each of those. All tests were done on the same day, same bike, same filter, same fuel, etc... Within 30-40 minutes of each other, I have over 150 runs on my yfz450r already.
(http://i1345.photobucket.com/albums/p669/robl-engineering/YFZ-R%20Dyno%20Runs/Robl%20GEN%20II%20amp%20III%20vs.%20FCI%20vs.%20ProDesign_zpsdrm619fa.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/YFZ-R%20Dyno%20Runs/Robl%20GEN%20II%20amp%20III%20vs.%20FCI%20vs.%20ProDesign_zpsdrm619fa.jpg.html)
Here is some pics of my dyno room when I was still installing all of the stuff:
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/11025204_757596784338457_6799299029535374604_n_zpsiepkvfgt.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/11025204_757596784338457_6799299029535374604_n_zpsiepkvfgt.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/11012727_754958041268998_6877327333798590206_n_zpssctgmxc1.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/11012727_754958041268998_6877327333798590206_n_zpssctgmxc1.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/11014999_754958017935667_122631978641297023_n_zpsfzcytpfg.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/11014999_754958017935667_122631978641297023_n_zpsfzcytpfg.jpg.html)
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All I asked is how it compares to other intakes. But if it makes u happy to freak out on someone u don't know go for it bro. God bless
No one is freaking out. I've been an R fanatic for the better part of of 20 years, I haven't seen an FCI installed on a 250R ever, I haven't seen anything other than the thread that was posted above. It doesn't appear like it would fit all that well on the stock framed bikes. Might work on the CR500 links and those aftermarket frames with the shock offset to the right and more room for the intake. Mine is largely designed after the Stock 86 boot so it fits like stock, but I added a few touches to improve performance as well, like larger inlet opening for 450r filters. Theirs looks like the one they sell for the 06+ trx450r's, but has an angled cut on the end where it mates to the carb, if that is truely the pic of one. If you look there is a rib on theirs on the carb side... that "usually" butts right up to the carbs on 450r's, but they left a little extra material and changed the cut angle so it could mate to an R carb... just a guess.
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Looks like dirtwheels is needing to do a 450r intake shootout so they can crown Robl engineering the best intake. it would be good for business troy. best of luck with your business.
john
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I like where your heads at, Troy. I think you're gonna have a good upgrade to an old and outdated piece of equipment. Can't wait to get one.
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Looks like dirtwheels is needing to do a 450r intake shootout so they can crown Robl engineering the best intake. it would be good for business troy. best of luck with your business.
john
I wish they would do this. Motocross Action is the only magazine that does tests like this, from what i've seen.
They are more concerned with utility shootouts, exhaust shootouts, and promoting Duncan products.
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I'm with you Tbone, I really enjoy MXA magazine articles. I still get DW mags, but its more for my collection than any actual good articles, I have nearly every mag all the way back to the very first in 1980. The DW's of old is gone.. They've sold their soul to the UTVs and utility markets (polaris). They haven't done an valuable worthwhile test in years.
As far as intakes, I don't know about best. I have released or sold anything yet, lol! The bar is set high with FCI, they do good work.
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No one is freaking out. I've been an R fanatic for the better part of of 20 years, I haven't seen an FCI installed on a 250R ever, I haven't seen anything other than the thread that was posted above. It doesn't appear like it would fit all that well on the stock framed bikes. Might work on the CR500 links and those aftermarket frames with the shock offset to the right and more room for the intake. Mine is largely designed after the Stock 86 boot so it fits like stock, but I added a few touches to improve performance as well, like larger inlet opening for 450r filters. Theirs looks like the one they sell for the 06+ trx450r's, but has an angled cut on the end where it mates to the carb, if that is truely the pic of one. If you look there is a rib on theirs on the carb side... that "usually" butts right up to the carbs on 450r's, but they left a little extra material and changed the cut angle so it could mate to an R carb... just a guess.
Thanks for the replay, sound like a great product. I was thinking it might be a good set up for my saber if I don't end up selling it. Good luck with your project.
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Here is the vapor smoothed prototype. Fits the 38 a/s carb perfectly.
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Looking great troy.
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Here is the vapor smoothed prototype. Fits the 38 a/s carb perfectly.
That looks awesome Troy
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Here is the vapor smoothed prototype. Fits the 38 a/s carb perfectly.
My one concern would be, is there enough rubber collar length to make it easy enough to install the carb without having to take the airbox off? The intake boot is probably pretty stiff and rubber collar is so short that it is probably not very flexible. Not to mention this area is already so extremely tight around the carb to frame clearance already. I am thinking specifically if someone would be able to take the carb off without taking the airbox off like the factory setup allows. Would it be prudent to extend the length of the rubber collar a little bit and shorten the intake boot length a little to aid in fitment and assembly/dissassembly? or would this cause a great hindrance to performance? Just a friendly suggestion.
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They way my intakes and airboxes are designed, the airbox will need to be removed to install the intake. I haven't made plans to do a rubber intake boot right now for the 250r's. This is hard stiff plastic. Problem with the rubber intakes is especially with the big bore they will collapse the intake slightly which reduces the performance a bunch. I've done some rubber designs with ribs to stiffen up the rubber, but it would be a pita to install, cause they are pretty stiff as well.
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Ya, if you make the airbox easy to drop out or lift up, i woudlnt mind pulling it everytime for a carb change. The OEM airbox gets tricky, especially with gusset kits.
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Yes it will be similar to the 450r airbox you are testing now. It would slide back out of the way pretty easily, then slide foward to reattach.
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Yes it will be similar to the 450r airbox you are testing now. It would slide back out of the way pretty easily, then slide foward to reattach.
If this is the case then I agree with Kyle. I wouldn't mind this procedure at all.
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Ya the 450R air box is a work of art. You got a winner here Troy. Cant wait to get your new intake setup on a smart carb and get rid of all these issues we have been fighting.
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Well a little update: Ryan has the prototype that he's trying to install on his bike since he was having Smart Carb issues with the stock boot. My first try I basically thru up an airball. I totally forgot about the narrow intake channel and that you have to squeeze the stock intake to fit thru to the carb, I had in my head like the Laeger's with the offset shock... forgot about the stock stuff. Looks like the only way a solid plastic style intake would work is either with a long rubber coupling or making the intake entirely out of rubber. I'm going to work with UPP, (and they are already on board) to make intakes out of the PU rubber similar to stock only more stiff so they don't collapse. Ryan is checking on the "shape" by installing the prototype with the upper shock bolt removed for installation then reinstall the shock after the intake is installed, ...this weekend. That would be of last resort, i.e. to remove the upper shock bolt swing it out of the way install the intake then swing it back into position and reinstall the shock bolt. Anyway, just wanted to update you all on today's findings. More to come soon.
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Keep in mind as you get things dialed in that some aftermarket shocks get even tighter in that area then others. I had an axis on a 87 with an esr eliminator kit and ran a slightly longer hose part for better clearance at the tightest part between the stock frame and large axis upper shock body.
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Keep in mind as you get things dialed in that some aftermarket shocks get even tighter in that area then others. I had an axis on a 87 with an esr eliminator kit and ran a slightly longer hose part for better clearance at the tightest part between the stock frame and large axis upper shock body.
Yep, you are right. My just happens to have an axis shock, and it is a bit larger than the factory shock. So if we can get it to fit mine, it should fit all the other shocks as well.
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The airbox design is nearly complete. I just need to finish up the intake design. I'm going to go with a design similar to my GEN III YFZR intake that is made for the trx250r and is made out of poly urethane. Stoked to see this come together! Makes me want to build another R!! The airbox design is similar in shape to Mike's design he made for the hybrids awhile back, I modeled that a couple years ago for Jerry. I liked that initial "shape" so I made all of my own touches to the design, there is no welds in this design nothing to cause stress risers or cracks. Also added my signature vents to the bottom, this box will breathe extremely well. This design can be run as an airbox eliminator as well, the airbox bolts together and is totally modular. The vents and lid are designed to deflect debris away from the filter but still let in maximum air.
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box1_zpsr31iupxj.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box1_zpsr31iupxj.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box2_zpskflvdus1.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box2_zpskflvdus1.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box3_zpsicxpimha.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box3_zpsicxpimha.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box4_zpsphehkvfd.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box4_zpsphehkvfd.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_zpsfi4ebygq.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_zpsfi4ebygq.jpg.html)
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Wow. Very impressive, Troy! I'm sorry I haven't gotten back with you yet on the intake boot. I have been all but sleeping at work the last two weeks (and not the good kinda "sleep at work"). I will get back on this asap so I am not slowing you down.
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That looks kickass Troy. Pumped to see the final product. A+ job as usual
This takes the 450r filter correct?
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That is awesome, I want one !!
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That looks kickass Troy. Pumped to see the final product. A+ job as usual
This takes the 450r filter correct?
Yep. And it's pretty freakin huge! I am anxious to see how that size filter will fit in that box and still not hit the rear shock or the brake caliper when fully compressed, but we shall see!
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yeah it uses the 450r filter and its tucked up really high in the chassis, I'm more concerned about fitting under the seat than I am about brake caliper hitting it. I did have to go to a tapered filter shape instead of a cylinder shape. i.e. so UNI won't work, those guys refuse to do a tapered filter, but No-toil, K&N, & S&B will be good filters as well. I designed it specifically for a 4.5" opening K&N filter, RU-4740.
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yeah it uses the 450r filter and its tucked up really high in the chassis, I'm more concerned about fitting under the seat than I am about brake caliper hitting it. I did have to go to a tapered filter shape instead of a cylinder shape. i.e. so UNI won't work, those guys refuse to do a tapered filter, but No-toil, K&N, & S&B will be good filters as well. I designed it specifically for a 4.5" opening K&N filter, RU-4740.
So when can we purchase :)
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^^^^ Yeah, what he said
Sent from my Galaxy S5
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Very nice Troy.
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I keep looking at this and thinking it might actually work for my no-link. There's so much taken of the bottom front of the box that I don't think it would hit the shock
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I keep looking at this and thinking it might actually work for my no-link. There's so much taken of the bottom front of the box that I don't think it would hit the shock
I'm going to order 3 of these for testing, Then I can send one out to see. I figured for the no link I'd have to move the airbox back a little more.
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I'm going to order 3 of these for testing, Then I can send one out to see. I figured for the no link I'd have to move the airbox back a little more.
Looks Awesome Troy. I'm anxiously waiting and hoping this will solve some of the problems I was having in my last race.
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Kyle wanted to see the airbox with the 06+ UNI filter installed. I could probably tweak the design to make this work, but I'm not sure how much clearance is between the top of the stock box and the bottom of the seat. To get that one in there I'd need to tuck the filter as high as possible under the seat:
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni_zpsrunyhm6d.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni_zpsrunyhm6d.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni2_zpsn2w6zgy8.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni2_zpsn2w6zgy8.jpg.html)
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If it was tapered like I tried to get them do a custom one for me it would work. THey would make a custom shorter filter 2" shorter if I ordered 100 at a time.
Tapered:
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni-taper_zpshzrk6msq.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni-taper_zpshzrk6msq.jpg.html)
2" shorter, this they will do but its a custom filter
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni-shorter_zpsyq6jfonw.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_box5_uni-shorter_zpsyq6jfonw.jpg.html)
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I assume the box is so short for caliper clearance?
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Correct, I can lengthen the floor of the box some though.
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Boom! Complete redesign of the intake tube, huge volume = massive big power increases. This will be made from PU rubber material, similar to stock only stiffer.
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_and_intake2_zpstkwiir8d.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_and_intake2_zpstkwiir8d.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_and_intake1_zps6p3ffa1b.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/trx250r_and_intake1_zps6p3ffa1b.jpg.html)
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It looks great. But i think your right that the 450r standard filter is probably just to big. Oh well. The finished product looks great. You need to get these in to production asap so we can start buying them.
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That "Re-designed" Air boot looks just like a stock yfz450 is that where the idea for the shape came from?
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Your old "elsinore" frame is just waiting for one of these!!!
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The shape idea came from trying to fit in the space we have to work with, but yes a yfz intake will fit a 250r, so there is some cues from that as well. I've been working on a yfz450r intake for awhile now, I have over 200 pulls on my yfzr alone on my dyno... I went a totally different direction with the yfz intake, I'm now making huge gains with the intake. Just trying to figure out a box to finish the package for the yamahammer... LOL! The yfz has horrible space-claim issues for intakes, especially with big body shocks... gets real tight.
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Honestly I would hate to run a K+N. But pair it with an Outerwear and it should be ok.
The box and intake would be such an improvement that I probably wouldn't mind.
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You all should check out S&B filters as well, they are 8 ply and about half the price of K&N. (worth mentioning)
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I would like to see this bolted to my Lobo chassis and run it thru the suspension travel. The no link may require extending out the front airbox mounts and moving the "front" of the airbox rearward maybe about two inches. My Lobo subframe has the front airbox mounts to run a stock box, in the stock location, with a stock intake boot, but none of those components work with the large no link shock. I heard Doug Roll had his own airboxes originally that probably fit ok with that setup, but like the LSR no link airboxes, they never caught on. Everyone with a Lobo just hacked apart a stock box and ran intake boot extensions and secured the airbox with zip ties to the subframe.
Edit: A good friend of mine owns a cold air induction company. He has about everything I could want at his disposal. I have thought about sitting down with him and coming up with something to work on the no link chassis.
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Cant wait till I can purchase one thanks for all of your hard work!
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I would like to see this bolted to my Lobo chassis and run it thru the suspension travel. The no link may require extending out the front airbox mounts and moving the "front" of the airbox rearward maybe about two inches. My Lobo subframe has the front airbox mounts to run a stock box, in the stock location, with a stock intake boot, but none of those components work with the large no link shock. I heard Doug Roll had his own airboxes originally that probably fit ok with that setup, but like the LSR no link airboxes, they never caught on. Everyone with a Lobo just hacked apart a stock box and ran intake boot extensions and secured the airbox with zip ties to the subframe.
Edit: A good friend of mine owns a cold air induction company. He has about everything I could want at his disposal. I have thought about sitting down with him and coming up with something to work on the no link chassis.
There is no doubt I would need to do a different intake and airbox for the no-link. In fact, I'd probably have to do a couple different designs just due to the nuances in the no-link designs between frames, etc.. Which I plan to tackle as well!! hopefully make some progress on the no link this weekend, with a test fitup on a hybrid bike.
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Troy do you have a picture of one of these systems mounted on an OEM or cr500 link bike?
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It looks fantastic [MENTION=47]troybilt[/MENTION]. That tube/box is the last piece of the puzzle for me...
(http://forums.trx250r.org/vbulletin_imports/94_6227_2017-04-18_777.jpg)
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Troy what about a filter like this I know the flange is larger but it might fit your design better. http://www.knfilters.com/mobile/mProduct.aspx?prod=E-1999
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I thought about and oval intake like that but then I'd be stuck with K&N filters only. I and alot others will only run the foam stuff...
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Is this something that will work with the stock air box?
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Very cool by the way,keep up the good work
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No it won't work with the stock airbox.
I should have the new boxes in my hands tomorrow. they are done ready to be installed. I'm printing now (~25hr print) the new intake boot to check clearances then it will get sent to UPP for molding. Progress!
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Good news and bad news: good news is I got the new airboxes in. Bad news they bastards cut them out of 11ga steel instead of 063 aluminum... :facepalm:
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You can't win can you Troy?
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Bad news they bastards cut them out of 11ga steel instead of 063 aluminum... :facepalm:
You got your self a fresh batch of boat anchors, just fill with concrete:rofl:
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oops
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How are these coming along Troy? You have any units ready to test for fitment?
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Slow, but I got the new boxes remade out of aluminum I just need to do a fitup test right now.
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Slow, but I got the new boxes remade out of aluminum I just need to do a fitup test right now.
Cool. Take some pics i'd like to check it out.
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Ask and yee shall receive.
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/12063371_855113421253459_1696822986132684082_n_zpseeyf6s7s.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/12063371_855113421253459_1696822986132684082_n_zpseeyf6s7s.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/12039214_855113414586793_8431918818980923217_n_zpslolghdya.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/12039214_855113414586793_8431918818980923217_n_zpslolghdya.jpg.html)
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Thems is sweet. Love the design Troy
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Ask and yee shall receive.
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/12063371_855113421253459_1696822986132684082_n_zpseeyf6s7s.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/12063371_855113421253459_1696822986132684082_n_zpseeyf6s7s.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/12039214_855113414586793_8431918818980923217_n_zpslolghdya.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/12039214_855113414586793_8431918818980923217_n_zpslolghdya.jpg.html)
Alright this guy is ready to test fitment. Got a nice muddy GNCC in 2 weeks to put it through the ringer LOL
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They look great Troy
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definitely a quality piece. Looks good
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Man came out nice wish I had your skills awesome job I'd interested in one to replace my stock one
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Alright this guy is ready to test fitment. Got a nice muddy GNCC in 2 weeks to put it through the ringer LOL
Well for now the 3D printed intakes are only good for fitment checks and dyno testing. I've already taken out one of my motors by pushing the limits of those, however, Jay at FWC is working on a method that I can send him the 3D printed parts and he reinforces them with CF for more abusive testing. Still perfecting that right now.
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Great job so far Troy. I believe you just about got it!
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Resumed work on this as of this morning. Going to totally redesign this so it could be used with the stock airbox if need be with little modifications. There will be a nice velocity improvement and move volume, i.e. more peak power.
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Resumed work on this as of this morning. Going to totally redesign this so it could be used with the stock airbox if need be with little modifications. There will be a nice velocity improvement and move volume, i.e. more peak power.
I'm from the SHOWME state, Troy! Lol. New pics or it never happened! J/K. Can't wait to see and use the finished product.
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Looking forward to seeing the end product
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I'm from the SHOWME state, Troy! Lol. New pics or it never happened! J/K. Can't wait to see and use the finished product.
I will show pics when I get the intake part mostly completed. Still a work in progress... going back to the smaller filter design. I'm a dealer for S&B and they will make a filter for me.
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Patiently waiting......:emmersed:
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I just got one of the kits for a 450...sexy!
Can't wait for the 250 one!!
Does your old style 250r kit take the 06^ 450 filter?
If so...do you have any of those? It's nice having the same filter on hand for both quads.
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I agree with Sam, would love to use the 450R 06+ filter so that all my bikes where the same.
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Its possible but you'd be limited to a paper filter style. The 250r box has to taper up to clear the caliper a bunch to allow for the larger 450r filter unless its a tapered filter, i.e. K&N or S&B.
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Ya id rather stay foam style. So do what you got to do to make it work Troy. Thanks for your hard work.
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Are you going to use the hydrophobic material to seal these? I'm excited about that stuff as well. I'd also rather stick with a foam filter.
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teaser pic.... modeling is done in t-splines software for Rhino, pretty sick stuff. Those points I can drag around etc.. The the dark blue is the stock intake for comparisons. I might have a new to me 89 250r in a week or 2 for fitup/dyno testing
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/intake_teaser_pic_zpsq8phmjvo.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/intake_teaser_pic_zpsq8phmjvo.jpg.html)
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Nice work Troy.
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Looks Great!
I've been dying to ditch my stock airbox and intake tube but I will continue to wait patiently to buy whatever you produce.
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I'm going to do 2 options I think, one that directly replaces the stock unit and works with stock airbox (but still optimized design) and another that works with a new airbox. Options.. everyone loves options... LOL!
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I'm going to do 2 options I think, one that directly replaces the stock unit and works with stock airbox (but still optimized design) and another that works with a new airbox. Options.. everyone loves options... LOL!
Dayyymmm doing work! I appreciate what you are doing for the 250r group
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I want one for my 363 XC quad that's in need of a new airbox/intake boot! lol
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Prototype fitted up
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I could use one of those, whats the eta on them?
Sent from my SM-G900P using Tapatalk
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The improvement that thing would give me over my current intake would be insane. Looking awesome Troy
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sweet!
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PayPal ready [MENTION=47]troybilt[/MENTION] lol :jumping0041:
Definitely a work of art
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More progress...
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r5_zpsc93li2fb.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r5_zpsc93li2fb.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r4_zps4kmi105v.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r4_zps4kmi105v.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r3_zpscosdgmcf.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r3_zpscosdgmcf.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r2_zps8vj1g8v3.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r2_zps8vj1g8v3.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r_zpstd2idqts.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/G3%20_Airbox_trx250r_zpstd2idqts.jpg.html)
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Enough teasing already. Need this to be available. Looks good definitely interested in this for mine.
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I have had problems with aftermarket intakes getting past my Axis shock. The connecter clamps are really tight. No room to get them in and I had to get longer rubber tube so I could get the clamps on. Just and FYI
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I have had problems with aftermarket intakes getting past my Axis shock. The connecter clamps are really tight. No room to get them in and I had to get longer rubber tube so I could get the clamps on. Just and FYI
His design should be ok. I have addressed this with him on mine.
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His design should be ok. I have addressed this with him on mine.
I know my led intake rubs bad enough it wore a hole in the boot.
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The intake will be made from 6ply wire reinforced silicone rubber but it will have some pliability to squeeze between the shock and frame. I've got a new supplier that I'm working with on this, so bare with me. I bought another R, so I can do some test fitting myself. I just need to go pick it up. I'll be dyno testing this pretty soon. Just about wrapped up with the trx and yfzr, the 250r is my next big project. I plan to have multiple intakes and configurations for the R, including a big drag setup.
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I'll be waiting...I NEED this intake setup!
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The intake will be made from 6ply wire reinforced silicone rubber but it will have some pliability to squeeze between the shock and frame. I've got a new supplier that I'm working with on this, so bare with me. I bought another R, so I can do some test fitting myself. I just need to go pick it up. I'll be dyno testing this pretty soon. Just about wrapped up with the trx and yfzr, the 250r is my next big project. I plan to have multiple intakes and configurations for the R, including a big drag setup.
what year YFZ do you have a set-up for?
John
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2009-2016
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Patiently waiting :smile-new:
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Those of you that are crushing the stock box where is it hitting? Here is the overlay, I'd rather fix now before I order the pcs.
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked3_zpsdgvcurld.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked3_zpsdgvcurld.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked2_zpsn8fjxlp4.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked2_zpsn8fjxlp4.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked_zpshqnvuhz4.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked_zpshqnvuhz4.jpg.html)
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Troy,
The only places that I know of that are in danger of being hit are:
1. Bottom right side of the airbox on the rear caliper at full compression of the rear suspension
2. Bottom front of the airbox contacting the rear shock spring coils. (Some oem airboxes had "humps" in the front of them. Can't remember which years did and which ones didn't.
(This information pertains only to the stock linkage) I don't know about other linkage setups.
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Brake caliper is hitting. Its hitting my CFM aluminum airbox about middle of the box on the right side. I had to cut and modify my aluminum CFM to clear.
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The OEM box drops down obnoxiously far in the front right. That's where it hits my shock spring. Don't have any issues with the 450r caliper i'm running
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The OEM box drops down obnoxiously far in the front right. That's where it hits my shock spring. Don't have any issues with the 450r caliper i'm running
Yeah, this is what I was talking about. Some of the year boxes had a curve cut out of them in the front to give clearance to the shock spring, but some years did not.
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If we made a different rear brake caliper bracket that rocked the rear brake farther towards the back of the bike, you wouldnt have any clearance issues. I would rather do that than notch an airbox. Just sell it as a package deal to relocate the rear caliper. Might need a little longer braided line. I know my rear braided lines have several inches to spare.
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If we made a different rear brake caliper bracket that rocked the rear brake farther towards the back of the bike, you wouldnt have any clearance issues. I would rather do that than notch an airbox. Just sell it as a package deal to relocate the rear caliper. Might need a little longer braided line. I know my rear braided lines have several inches to spare.
Mine do as well. It's not a terrible idea. It's worth considering. Although not all years are the same, so you would have to have more than one type of caliper bracket. The atc 250r's use a different type caliper bracket. And some guys, like myself, are running 450r rear calipers. I know I currently have to use the 450R caliper bracket, I believe, to make the 450r caliper work.
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Mine do as well. It's not a terrible idea. It's worth considering. Although not all years are the same, so you would have to have more than one type of caliper bracket. The atc 250r's use a different type caliper bracket. And some guys, like myself, are running 450r rear calipers. I know I currently have to use the 450R caliper bracket, I believe, to make the 450r caliper work.
Only thing is I'd think you'd change the braking power to the rear like a banshee vs the top style.
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I like that idea, I can surely look into that as well. Hadn't thought of that.
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I like that idea, I can surely look into that as well. Hadn't thought of that.
Troy is there anyway you could do the boot ring and bracket for the dune guys then do a bolt on box after?
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The airbox eliminator style will come next. Separate intake design for that....
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The airbox eliminator style will come next. Separate intake design for that....
Seems like this style could be done a lot faster and end up with product being sold sooner.
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Seems like this style could be done a lot faster and end up with product being sold sooner.
True, but there is plenty of eliminator style intakes out there already like LED, etc.. The guys that race MX/XC are in dire need of some improvements in the intake and airbox area. I'll get started on those as well. it will be a rigid style intake vs a silicone intake. But I'm not going to throw something out there without extensive dyno testing. I''l put the same effort in the R's as I do the 450 stuff.
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True, but there is plenty of eliminator style intakes out there already like LED, etc.. The guys that race MX/XC are in dire need of some improvements in the intake and airbox area. I'll get started on those as well. it will be a rigid style intake vs a silicone intake. But I'm not going to throw something out there without extensive dyno testing. I''l put the same effort in the R's as I do the 450 stuff.
The led intake I had would rub the frame and shock bad enough it broke a boot Troy there maybe plenty out there but something that works and won't cause issues are a different story.
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If you want to run a plastic I take I can have those ready without a box rather quickly, but the carbon fiber and silicone boots take some time to sort out with suppliers.
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I can't wait till the airbox/intake are ready to try out, been needing a new airbox for a while now for XC racing.
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If you want to run a plastic I take I can have those ready without a box rather quickly, but the carbon fiber and silicone boots take some time to sort out with suppliers.
That'd be fine Troy I'd be willing to try it on my puma.
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The air-box eliminator style will come next. Separate intake design for that....
I got my buddy to buy your 450r intake kit w/ air-box and it looks sick. You can turn it into an eliminator style by unbolting the rest of the air-box right?
True, but there is plenty of eliminator style intakes out there already like LED, etc.. The guys that race MX/XC are in dire need of some improvements in the intake and air-box area
Amen to that. Troy will an air-box lid like the one shown below will be offered?
(http://forums.trx250r.org/vbulletin_imports/483_7627_2017-04-18_8242.jpg)
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I got my buddy to buy your 450r intake kit w/ air-box and it looks sick. You can turn it into an eliminator style by unbolting the rest of the air-box right?
Amen to that. Troy will an air-box lid like the one shown below will be offered?
(http://forums.trx250r.org/vbulletin_imports/483_7627_2017-04-18_1788.jpg)
tbone, originally yes I was going to follow the same train of thought with the 250r airboxes. The problem is the subframe rails are angled in, so part of the box has to be below the subframe and the rest has to fit in between. Unless I chop it up and have a ton of welding... I decided to keep it somewhat simple. What I can do is offer a package so if you want to run an eliminator style, you'd just have to swap to the bracket. I tried to do a similar lid, but the lid can't be flat like I was able to do on the 450r. So far the R has been far more complicated to do an airbox for, even more so than my YFZR setup.... howeve, I'm not complaining, I like the challenge.
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If I back off from using the S&B filters, (which are really good filters!!)... there is more room to work with if I stick with the standard 250r filters. I might see if S&B can make a custom filter for me that is similar in size to the standard 250r filters.
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tbone, originally yes I was going to follow the same train of thought with the 250r airboxes. The problem is the subframe rails are angled in, so part of the box has to be below the subframe and the rest has to fit in between. Unless I chop it up and have a ton of welding... I decided to keep it somewhat simple. What I can do is offer a package so if you want to run an eliminator style, you'd just have to swap to the bracket. I tried to do a similar lid, but the lid can't be flat like I was able to do on the 450r. So far the R has been far more complicated to do an airbox for, even more so than my YFZR setup.... however, I'm not complaining, I like the challenge.
I noticed the difference with the subframes too. I'll never ever run an eliminator setup so you do what you want with that. Lol
If I back off from using the S&B filters, (which are really good filters!!)... there is more room to work with if I stick with the standard 250r filters. I might see if S&B can make a custom filter for me that is similar in size to the standard 250r filters.
Would custom filters be more difficult to obtain in the future? And how fast could we get a filter if needed in a pinch?
It would be nice to be able to go to any online store and buy the type of filter (foam, K&N) that is desired. Whether that's a 450r or 250r filter.
How significant is the difference in flow capabilities between the 450r and 250r filters? I imagine if you're in big Sphynx or Puma territory it would be greater
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Another idea instead of welding have the box held together with fasteners making it convertible from box style to eliminator style.
It's just a idea, it would be nice to remove 4 screws from the front and be able to pull the back part of the box off.
Sent from my SM-G900P using Tapatalk
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I noticed the difference with the subframes too.
Would custom filters be more difficult to obtain in the future? And how fast could we get a filter if needed in a pinch?
It would be nice to be able to go to any online store and buy the type of filter (foam, K&N) that is desired. Whether that's a 450r or 250r filter.
How significant is the difference in flow capabilities between the 450r and 250r filters? I imagine if you're in big Sphynx or Puma territory it would be greater
Oh you can run any of those 250r filters. My custom S&B filter would just be an option if you wanted more flow, but you can run the 250r K&N or UNI with it no problem.
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Don't hybrid quads use 250r filters?
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If I back off from using the S&B filters, (which are really good filters!!)... there is more room to work with if I stick with the standard 250r filters. I might see if S&B can make a custom filter for me that is similar in size to the standard 250r filters.
Are they the dry style filters Troy? If so I know they can dust an engine pretty easily.
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Another idea instead of welding have the box held together with fasteners making it convertible from box style to eliminator style.
It's just a idea, it would be nice to remove 4 screws from the front and be able to pull the back part of the box off.
Sent from my SM-G900P using Tapatalk
Yes that's they way all my 450r boxes now, tbone was suggesting I do that the same with the 250r box. I'll work on it, but I'm trying to also keep the costs in line as well.
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This is all going to go alot faster when I pick up that bike, hopefully this weekend. Right now I don't want to get too far down the road until I can test fit/dyno, etc...
Skeans, I'll work on a big bore intake/eliminator setup. The reality is an intake that works well for a 250cc-300cc motor isn't going to work well for a 408-430cc motor, also porting is going to factor in there as well. So I'm going to end up having several intake designs for the R. Which is not a problem I have 4 or 5 designs for the 450r now. Just more difficult to manage inventory etc.. but I'm working on a new system for that as well.
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Yes that's they way all my 450r boxes now, tbone was suggesting I do that the same with the 250r box. I'll work on it, but I'm trying to also keep the costs in line as well.
I was just curious because when I was looking at the 450r box my buddy bought, it looked like you made them convertible from eliminator to airbox. That's a cool feature even though i'd never ever run it like that. Whatever's easier and cheaper for you
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Don't hybrid quads use 250r filters?
Its all over the map. That's another area of improvement as well. My YF450Z laeger originally used an LT500 boot with 250r filter, then I converted it to Mike's box and stock yfz450 intake and prodesign ring/filter. That was a step in the right direction. I can get a 450r filter to fit the R, but... still toying with that idea.
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The problem you'll find with the stock 250r intake on big bores especially, is the intake pulse is much stronger and can collapse or pinch the intake boot. Among other things, you loose intake energy when the intake boot is flexible like that...
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That's why the carbon fiber makes a good material for intake boots, very rigid.. (as long as you can get it to fit...etc...) Its also a good insulator from heat.
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Troy,
I'm sure what you end up with will work very well. I am confident of that.
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id really be interested in a boot. i have a 363 with a oe fit aluminum box that i have a ton of time into modifying so it will work better/how i want it to so i dont want to buy a new box but the boot is really restrictive. if the plastic boot would fit around my shock id buy it in a heart beat but id be concerned about it rubbing the shock and since its not flexible it would rub a hole in it. am i over thinking this? is just see a rigid boot causing problems if my setup isnt 100% correct and in all the oe locations. is there any flex at all in the plastic boot?
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Depends on the plastic, I've got a couple options on plastic. The boot that is in the picture is 6 ply silicone rubber reinforced with wire, so its fairly rigid moreso than stock, but flexible enough to install it. The 250r is not unique in that it all bikes rear shocks clearances are of a concern...
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The other thing that needs to be realized is the R will respond to intake changes in the power curve almost as well as the 450r's if not more so.
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I'm not just making a stock replacement boot, that's not the point, there is plenty of those out there for that.
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I like the idea of the reinforced silicone intake boot myself. Flexible enough to install and maneuver around obscure shapes, but rigid enough to stay open and flowing.
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Ok i'm done bothering you. Now we're just taking time away from your R&D lol
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Ok i'm done bothering you. Now we're just taking time away from your R&D lol
I wish I'm at work at my day job right now.... soon to be leaving. LOL
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ok [MENTION=47]troybilt[/MENTION] i want to try out a plastic one whenever there ready
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Looking forward to see these available for us. Thanks for you hard work
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Looking forward to see these available for us. Thanks for you hard work
x2 [MENTION=47]troybilt[/MENTION]
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[MENTION=463]Skeans1[/MENTION] what size carb are you running with the Puma? What is the OD of the carb bike on the intake side?
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[MENTION=463]Skeans1[/MENTION] what size carb are you running with the Puma? What is the OD of the carb bike on the intake side?
I'll be running a 50mm lectron it hasn't shown up but should be here any day when I receive it I can pm you the measurements or post them here your choices just let me know.
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Yeah just post them here! Thanks.
And anyone else would be good to have the OD's of the various carb's bell intake side.
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Yeah just post them here! Thanks.
And anyone else would be good to have the OD's of the various carb's bell intake side.
No problem I can take some of the smart carb as well its a 40mm billet, do you need lengths of the carbs as well?
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Also would be good to have the shock angle at full compressed for CR500, stock, and no link.... maybe difficult to get but would sure help.
Little rubbage here that I'm correcting...
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked5_zpsnoo1ktyj.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked5_zpsnoo1ktyj.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked4_zpslraoo8fz.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked4_zpslraoo8fz.jpg.html)
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That would be great to get a rough length on the carb.
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[MENTION=463]Skeans1[/MENTION] when will you have your bike running? I'll try to have a Puma intake designed for you by then.
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[MENTION=463]Skeans1[/MENTION] when will you have your bike running? I'll try to have a Puma intake designed for you by then.
It'll be ready to run once the carb shows up from Packard some time this week. Thanks Troy
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Going to try and run the same filter I use for our 450R drag and TT builds, we've seen huge gains with similar setups at Racer's Edge. Mocked up with a 496 Saber. Man I miss my Saber!!...
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg.html)
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Going to try and run the same filter I use for our 450R drag and TT builds, we've seen huge gains with similar setups at Racer's Edge. Mocked up with a 496 Saber. Man I miss my Saber!!...
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg.html)
Another to throw out there to think about some of the drag and dune pumas are more horse then the 450's. We all miss you having that Troy.
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Going to try and run the same filter I use for our 450R drag and TT builds, we've seen huge gains with similar setups at Racer's Edge. Mocked up with a 496 Saber. Man I miss my Saber!!...
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/New_box_tucked6_black_zpsisfxassh.jpg.html)
Don't overlook the fact that a Puma takes almost twice as many large gulps of air per minute than a big bore 4 stroke when selecting an air filter that complements the engine package. Also allow some extra air filter surface area so that airflow is not compromised when the filter has some time on it near the end of a race.
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Iteration 1 is complete:
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg.html)
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Iteration 1 is complete:
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg.html)
How and where are you going to mount the intake Troy?
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How and where are you going to mount the intake Troy?
Eliminator bracket similar to my trx450r version.
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Eliminator bracket similar to my trx450r version.
Eliminator bracket kinda like the fuel customs set up on the 05 yfz450
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would buy looks great.
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Iteration 1 is complete:
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_04_zps31x9xfgy.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_03_zps3wsjhgyk.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_02_zpsajrlig39.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/TRX250R%20and%20Hybrid%20Velocity%20Intake/Puma_intake_01_zpsjkxedkt7.jpg.html)
Put me the list I'm sold
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What happened to the pictures!?!?
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No idea they were there this morning
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is there any option for a foam element that size?
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Not sure on that big unit, its for the duner drag motors, 400cc plus was my intentions.
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[MENTION=47]troybilt[/MENTION] 50mm lectron od 60mm and 95mm long, smart carb 40mm billet 62mm by 95mm long, a cr500 manifold is positioned slightly different then the cp puma manifold I'll get you a few pictures to help you.
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Prototype intake done, ready for testing!
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Prototype intake done, ready for testing!
Awesome Troy looks good, how long and big of a filter are you thinking?
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S&B R0923, AWESOME Filter!! we use this on our TT setups, big bore yfzr intakes, and drag 450r intakes.
http://www.sbfilters.com/products/universal-filters/round-with-flange/universal-filter-165
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Looks good Troy you find any testers lined up?
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Prototype intake done, ready for testing!
When you say "big bore" for that intake, you big are you talking?
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Couple of examples of our big filter setup on 450's I posted this morning... you get a sense for the size of the filter.
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The graph is of the G5 intake, not the TT intake shown, but you get the idea. They are very similar... check out the gains at 10000 rpm...
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When you say "big bore" for that intake, you big are you talking?
Its kind of like the expansion chambers, what works well for the small bores is too small for the big bores and vice versa. This one was designed for the 400+ cc motors. However, the stock intake may be poor enough that the bigger intake still works better. I'll have a smaller version for the 310-363's... Its hard to make one intake fit all the possible combinations of motors/carbs, unless you don't care about performance...
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Also bare in mind, my 450r intakes are after 2 years of development and dyno testing, the reality of hitting a home run on the first one is slim, but we got to start somewhere.
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Can't wait for the 310-363 one's
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Couple of examples of our big filter setup on 450's I posted this morning... you get a sense for the size of the filter.
When run #2 was made was the seat on or off the bike?
Would you post the A/F curves for runs 2 and 9. It looks like the resonance of the stock intake may have caused the engine to go rich around 9000 RPM.
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You have to ask Those Dyno Guys, they didn't give me any specifics.
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They didn't get to tune the G5 intake cause the chain broke from what I understand.
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The increased intake volume carries the hp longer in the rpms. I can post more curves if you'd like. Racers Edge shows similar curve with G6 and my G3 intakes.
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You have to ask Those Dyno Guys, they didn't give me any specifics.
I thought you used your own dyno for your intake testing?
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[MENTION=47]troybilt[/MENTION](http://uploads.tapatalk-cdn.com/20160428/3c6491beec16980ce5ce3a7bdac7985d.jpg)(http://uploads.tapatalk-cdn.com/20160428/5539922499dd7d7b68b62513059fd7f6.jpg)(http://uploads.tapatalk-cdn.com/20160428/7b5a770a07f0a1b1e95798d93bd4f970.jpg)
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I thought you used your own dyno for your intake testing?
I do but that particular graph was done by a 3rd party. I have my own Dynojet 250i... Anymore its not enough to post curves from your own dyno now everyone wants to see curves from a 3rd party. I actually haven't tested my G5 intake on my dyno... I wasn't expecting that those results. They saw the same or similar results on 3 different bikes.
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[MENTION=463]Skeans1[/MENTION], she's tight in there.... reminds me of my saber.. I had the advantage of the offset shock with the laeger CR500 linked frame.
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Here is my dyno runs on my dyno with a Pro-A TT bike... FCI vs my G3 and GTT intakes.
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/12472607_958531844244949_6726878833512882023_n_zpskr7kja8k.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/12472607_958531844244949_6726878833512882023_n_zpskr7kja8k.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/12512682_946729468758520_6532785977776907865_n_zpsniwzbvyr.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/12512682_946729468758520_6532785977776907865_n_zpsniwzbvyr.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/12932911_946729465425187_7928804223373868326_n_zpsgsh7gv4m.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/12932911_946729465425187_7928804223373868326_n_zpsgsh7gv4m.jpg.html)
My Rig, sound deadening room. Full exhaust evacuation system... sucks cause I just build this room and now I'm building a new shop that much bigger... going to build another dyno room.
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/11012727_754958041268998_6877327333798590206_n_zpssctgmxc1.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/11012727_754958041268998_6877327333798590206_n_zpssctgmxc1.jpg.html)
(http://i1345.photobucket.com/albums/p669/robl-engineering/Dyno%20Room/11025204_757596784338457_6799299029535374604_n_zpsiepkvfgt.jpg) (http://s1345.photobucket.com/user/robl-engineering/media/Dyno%20Room/11025204_757596784338457_6799299029535374604_n_zpsiepkvfgt.jpg.html)
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[MENTION=463]Skeans1[/MENTION], she's tight in there.... reminds me of my saber.. I had the advantage of the offset shock with the laeger CR500 linked frame.
Guess that's what we get for throwing drag cylinders into a full suspension bike.
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Guess that's what we get for throwing drag cylinders into a full suspension bike.
A rigid intake may not work for that either. You have very little space from the end of the carb to the shock. But we'll see what we can do.
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A rigid intake may not work for that either. You have very little space from the end of the carb to the shock. But we'll see what we can do.
If need I could get some material and cone out an intake for you to copy off of.
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What we've done in the past is use welding wire or stiff wire.... basically hang the filter where it needs to be, then use wire to make a "frame" and then wrap with painters tape. To sort of make out the shape. I might jsut send you what I have now, and not worry about the filter yet and see how it fits.
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What we've done in the past is use welding wire or stiff wire.... basically hang the filter where it needs to be, then use wire to make a "frame" and then wrap with painters tape. To sort of make out the shape. I might jsut send you what I have now, and not worry about the filter yet and see how it fits.
That's fine Troy let me know what you decide.
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Any progress on this Troy?
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Yes I sent 2 designs to Ryan for test fitment. I've got Skeans Puma intake all but ready to ship.
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Thanks for putting the effort into these.
If I made up a wire frame would you be able to make it? I would like to try this on my Ziggy with a Puma. Also gonna need something for a stock frame bike with a 400cc+ Rotax.
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Possibly... What's a ziggy chassis? LOL
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It's posted here.
http://trx250r.org/threads/4056-My-Re-builds-That-are-on-Going/page2
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So are you just clamping the filter to the carb? No velocity stack etc..? One of these days, especially on the drag chassis's, I'm going to get chassis builders keyed into the intake space... The intake is as important as the pipe on the other side...
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Yup, just clamped to the carb. I know there is some to be gained.
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So are you just clamping the filter to the carb? No velocity stack etc..? One of these days, especially on the drag chassis's, I'm going to get chassis builders keyed into the intake space... The intake is as important as the pipe on the other side...
Exactly. way too many banshee guys think the pod carbs directly on the carb is beneficial and they could't be more wrong.
john
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Exactly. way too many banshee guys think the pod carbs directly on the carb is beneficial and they could't be more wrong.
john
Hmm
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Winner winner we have one that fits with a upp puma manifold, I'll check fitment tonight of a cr500 manifold with a smart carb tonight. Thanks [MENTION=47]troybilt[/MENTION]
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[MENTION=100]rablack21[/MENTION] now the guys are waiting on you lol.
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Damn computer glitch. Meant to hit like and hit disliked haha. Would like to get one in my hands to do some dyno testing.................
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How's it goin Troy?
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Update, I sent the smaller bore intakes to Ryan, just before his motor blew. He hasn't had a chance to test them. This past weekend I remade a couple more and I'm sending them to Kyle to test on his bike. without a bike here its hard to do any testing quickly. I tried to buy one but that deal fell thru. Nothing but junk around here for sale lately.
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So who has my puma prototype intake now? Any feedback?
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So who has my puma prototype intake now? Any feedback?
We need to length it like we talked about to mount the brake reservoir Troy otherwise no issues. Do you still have my contact info and how's the bracket coming along?
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I have the bracket here ready to ship. I wasn't sure if you still had the intake or not?
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How is this coming along
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all I want for Christmas is a robi intake ��
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Any idea when we can purchase? I'm with the dirtygerman^^^^....Christmas presents for us please! LOL
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If you need someone with a stock bore and 38mm at sea level let me know lol
i think there is a motorcycle/atv dyno somewhere here in town. I know we have six chassis dynos we better have one motorcycle/atv dyno....
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If you need someone with a stock bore and 38mm at sea level let me know lol
i think there is a motorcycle/atv dyno somewhere here in town. I know we have six chassis dynos we better have one motorcycle/atv dyno....
There's dyno's all around but I think we are waiting on other stuff.
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all I want for Christmas is a Robl intake ��
Oh what a Christmas that would be lol. Maybe i'd actually get to race next year without swamping my motor.
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How are things coming along now. We going to have an intake for the 2017 season
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Picking up a new to me R this week, and I'll get back on the designs asap. Finally moved into our new shop and have a ton more space. Ready to kick 2017 off right.
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Finally got my firewall to stop blocking this site. So I get notifications again.
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Wahooo. Cant wait to buy one or 2 of these.
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Picking up a new to me R this week, and I'll get back on the designs asap. Finally moved into our new shop and have a ton more space. Ready to kick 2017 off right.
Sounds good to me! Look forward to seeing what you've got planned
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Any updates on this
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Any updates on this
X2!! Been looking forward to you putting these into production since you first started prototyping
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Intakes are ready, I have the brackets on order. Steve at ISF is doing the airbox. If you haven't checked them out already.
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So they will ready to order shortly
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Correct sir
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Thank you for all you do for our machines
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Troy, that you sending stuff to my son-inlaw Chuckie Creech ?.
Neil
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I will building a CPI 350 or 370 motor here in a couple of months and this intake and airbox has my attention. Is this for a stock frame? What type of price range are we looking at?
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http://www.robl-engineering.com/shop
john
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When will the airbox versions be ready? Will the airbox version work with a smartcarb?