Author Topic: Update from Power Apt on cast smart carbs (Read 63450 times)

udontknowme · « **Reply #60 on:** November 30, 2013, 07:29:54 PM »

this is what i figured on the 48hv. its stamped 48 on the front and 50 on the back so i guess its 2 different bodies bolted together. im guessing a regular 48 would measure about 43ish most of the way through and then perhaps it opens up at the front end to about 46.5. honestly i dont see where they get the 48 designation

rablack21 · « **Reply #61 on:** December 02, 2013, 07:55:16 AM »

Quote from: Pumashine;18734

I believe what you are seeing is a company offering a cheaper version of billet at X price. To achieve X price the whole process must be done economically. As the carb goes from one stage to the next the whole order cannot go on until that stage is completed. Kinda like mass production but not on a conveyor belt. Any small problem will be multiplied by the number of carbs being produced.

Our sponsor ESR went through the same problem with the cast clutch covers and center cases. Big problems arise if you get them all cast then find out for example the CB is hitting the case. Or the bearing is in the wrong location. The covers and cases took over a year to finish past the expected delivery date. Yall must be patient.

This is exactly right. It takes longer this way, but it is the sacrifice you make for a cheaper price tag.

JasonB · « **Reply #62 on:** January 05, 2014, 02:19:11 PM »

Email from Liz at APT I just received :

To Our Pre-Order Customers,
American Performance Technologies is excited to announce to our SmartCarb pre-order customers an update regarding the progress and completion of the cast 38mm SmartCarb assembly and delivery timeline.

APT had previously announced that our 38mm castings and parts had arrived for assembly and release, but that the high-grade plastic slide inserts did not meet our quality standards. Our vendor has since implemented a fix and a tooling change and we are satisfied with the new inserts that they have sent us. We also performed a machining change on the slides to improve slide-sealing characteristics and low throttle and idle control.

We now feel that we have satisfied our obligations to ensure that our product meets and exceeds our customers’ high quality expectations. APT is currently working on reducing build time by standardizing our quality control checking steps for each SmartCarb that is released. We are building carbs in batches of 50 and foresee that all pre-orders will be satisfied within the next several weeks.

APT is proud to announce that SmartCarb shipments have begun. You should expect to see a notification and tracking number sent to your email once your SmartCarb has shipped. If you have any questions or concerns, please give us a call at 1-877-372-3465. Also, please be sure to check out the installation and tuning tutorial videos on our website (powerapt.com) to be posted in the next few days.

Wishing everyone a Brapppy New Year!

Stay tuned,
The APT SmartCarb Team

rablack21 · « **Reply #63 on:** February 03, 2014, 02:34:09 PM »

Here is a dyno chart that was posted on ktmtalk.com. The cast version even shows power gains over the billet version. That's pretty cool.

udontknowme · « **Reply #64 on:** February 03, 2014, 10:25:44 PM »

people are still having all kinds of problems with the cast carbs. ill bet theres even a few that havent posted of their issues because theyre probly embarrased and i dont blame em. theres a few smartcarb nutswingers that gave good reviews but the non-nut swingers have told of many problems

Jerry Hall · « **Reply #65 on:** February 03, 2014, 11:30:40 PM »

An engine builder in Texas has been calling me on and off for about a month giving me reports of his experience with the Smart Carb. He finally received a cast Smart Carb in early January that has been on order for many months. The Smart Carb and cable was suppose to be set up for a YZ250. When the carb was ordered, APT said that they did a lot of testing on the YZ250. The throttle cable did not fit and the builder said the casting quality was poor. The builder installed the pre jetted carb and it was so lean it would not run any time the throttle was more than about half throttle.

The builder removed the needle that came in the carb. He called APT to check to see if maybe they installed the wrong needle. APT could not tell him what needle the carb should have. APT sent him a bunch of needles and has been working closely with him trying to come up with a needle and settting for the YZ 250. They now have it running at full throttle but runs rich at the smaller throttle positions. At this point in time the stock carb runs a lot better than any combination they have been able to find.

The customer wants APT to pay for the engine builders time that he is spending trying to dial in a "pre jetted carb". ATP refused to pay so they are considering returning the carb.

rablack21 · « **Reply #66 on:** February 04, 2014, 10:11:05 AM »

Quote from: udontknowme;24590

people are still having all kinds of problems with the cast carbs. ill bet theres even a few that havent posted of their issues because theyre probly embarrased and i dont blame em. theres a few smartcarb nutswingers that gave good reviews but the non-nut swingers have told of many problems

What makes them nut swingers? Just because they gave their opinion and it was a good review?

udontknowme · « **Reply #67 on:** February 04, 2014, 08:58:31 PM »

to me it just seems like some guys are butt kissers that want to hype up the smatcarb name, for reasons unknown. for instance there was one guy that posted a vid proclaiming how good he thought the carb was working. you can clearly hear the engine is not running very well

theres some honest people that dont follow the sheep herd and stated they been having problems. bike stalled and wouldnt restart, spring wasnt strong enough to close the slide. ive forgotten alot of the issues people are claiming because theres so many pages. go read for yourself

rablack21 · « **Reply #68 on:** February 05, 2014, 09:22:41 AM »

Actually, I have read every single page. I keep up with it daily. You may have also noticed a few other things then. Such as alot of the issues being reported are due to user error and not necessarily related to the malfunctioning of the carb. You may have also noticed that the majority of people are not having issues with this carb; it's just that the ones that are tend to cry the loudest. You may have also noticed that Corey at Smart Carb has been on the forums and on the phone diligently assisting people who have had problems to get them going again. He has also spent alot of time setting up some troubleshooting information for people who have had an issue so they know why it is happening and they can stop it from continuing. I don't know about you, but I haven't had that kind of support from Keihin ever in my life.

No carb works perfect all the time and is idiotproof. Who out there has never had an issue of some sort with a carb. Whether it be self induced or age induced, issues will happen from time to time. From what I have read, getting the smart carb setup correctly from the get go is vital to its performance from then on out. Sounds like too many people are throwing them on and go to clicking and turning all the knobs before they even understand what they do. The new tuning videos and troubleshooting info from APT should correct this.

udontknowme · « **Reply #69 on:** February 05, 2014, 11:22:57 PM »

so the lastest is problems with tip over balls. maybe castor is the reason ? change my oil to suit the carb, i dont think so. my keihin doesnt care what oil i use, 16:1 or 100:1 it doesnt matter. never a single problem with the slide spring. never flooded out and wouldnt restart. sugar coat it all you want but theres definatly some issues with the smartcarb. hell some guys are now worried it could be a safety issue ? ya i suppose if the engine stalls at the wrong time you might go azz over handle bars

i commend their effort to make something new and better but a few more years of testing would of been the better way. im sure apt is realizing that also

brewer_brewer · « **Reply #70 on:** February 06, 2014, 05:39:34 AM »

still no complaints with my billet

rablack21 · « **Reply #71 on:** March 13, 2014, 02:14:50 PM »

I got some info to pass along. Here is an update for ya: for better or worse.

I called and talked to Corey Dyess personally. I told him there were people on the forums that were agitated because they hadn't gotten their carbs, and possibly more importantly, they have not gotten any updates as to what is going on. This is why he told me.

I apologized for the lack of communication, but has, more or less, pulled everyone away from the phones to a certain extent to either help assemble carbs or package them or ship them. He said that Liz is not really answering the phone or emails right now because she is helping to package carbs and prepare shipping info. He said instead of issuing another excuse to people why the carbs weren't done to give people an update, they are pushing everybody they got to getting carbs finished and shipped. He said they will have all of the orders completed, shipping, or shipped by the end of 2 weeks. He is just now getting back to returning calls made to him and try to get back with customers. I actually left a message the first time I called and he called me back a couple hours later. He realizes that they have made some mistakes along the way, but they are trying the best they can to make everything right. He didn't want to spend any more time sending out updates as to why they weren't do, but wanted to spend all man power actually getting them finished and shipped instead. He said, "I know people will be happy with the actual product once they finally get what they have waited so long for." I asked him if he wanted me to pass along this information, and he said," yes, please do".

Hope this helps some of you that are still waiting.Thought you guys might want to know what's going on.

Quinnlt4 · « **Reply #72 on:** March 13, 2014, 03:33:40 PM »

Cool. I placed my order shortly after your ride reports rablack for a 38mm cast. I was told early May because of the volume they are shipping. Hopefully it comes sooner if they are pooling all there people to shipping.

rablack21 · « **Reply #73 on:** March 13, 2014, 03:53:06 PM »

Cool deal. I also got some helpful tuning tips from Corey while I had them on the phone. Hit me up when you get yours and I will let you know or do another write up. Bottom line is, 2 strokes like this carb!

JasonB · « **Reply #74 on:** March 13, 2014, 05:18:15 PM »

thanks for the update. im starting to really stress out I have spent well over 11K on my 500R build and have been pushing the last 3 months to get it together for the ride we have at Little Sahara OK in 12 days. This Carb is the LAST PIECE TO THE PUZZLE! I just want my carb!!!! Thanks man, i will try and relax.