Author Topic: Robl Engineering Prototype Intake Completed (Read 91542 times)

troybilt · « **Reply #45 on:** August 03, 2015, 12:02:24 PM »

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.

rablack21 · « **Reply #46 on:** August 03, 2015, 01:57:19 PM »

Quote from: troybilt;56764

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.

Burns363R · « **Reply #47 on:** August 03, 2015, 02:09:41 PM »

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.

troybilt · « **Reply #48 on:** August 07, 2015, 09:38:53 AM »

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.

etccb · « **Reply #49 on:** August 07, 2015, 10:13:45 AM »

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.

rablack21 · « **Reply #50 on:** August 07, 2015, 10:32:19 AM »

Quote from: etccb;56885

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.

troybilt · « **Reply #51 on:** August 18, 2015, 07:49:11 AM »

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.

rablack21 · « **Reply #52 on:** August 18, 2015, 08:08:24 AM »

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.

Tbone07 · « **Reply #53 on:** August 18, 2015, 09:00:27 AM »

That looks kickass Troy. Pumped to see the final product. A+ job as usual

This takes the 450r filter correct?

TRXjeeper · « **Reply #54 on:** August 18, 2015, 09:22:58 AM »

That is awesome, I want one !!

rablack21 · « **Reply #55 on:** August 18, 2015, 09:41:14 AM »

Quote from: Tbone07;57226

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!

troybilt · « **Reply #56 on:** August 18, 2015, 10:39:16 AM »

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.

Tbone07 · « **Reply #57 on:** August 18, 2015, 11:02:50 AM »

Quote from: troybilt;57233

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

StrokedAZ · « **Reply #58 on:** August 18, 2015, 11:05:22 AM »

^^^^ Yeah, what he said

Sent from my Galaxy S5

rk88r · « **Reply #59 on:** August 18, 2015, 03:10:14 PM »

Very nice Troy.