New Smart Carb

rablack21 · Oct 25, 2012

APT | SmartCarb®

Has anyone else seen this yet? It looks to be promising. There is some talk about it on two stroke motocross. There is also a guy who tested it on the Gas Gas forum who is singing it's praises. Best part.....no jets!

brewer_brewer · Oct 25, 2012

interesting, they have one that is a "replacement" for PWK 38-40mm

and its only 875 bucks lol

APT | Store

rablack21 · Oct 25, 2012

Yeah, the billet ones are rather expensive, but they are coming out with a cast one next year in the $350-$400 range.

NOS_350x · Oct 25, 2012

there was a thread about this last week... you can find it using the search function im sure.

Kjason64 · Oct 28, 2012

What about the sonic flow engine ? Like to get some opinions on it too...maybe the 2 stroke will come back

rk88r · Oct 28, 2012

I finally got a chance to read the forum an gas gas. It's very interesting. Even if it is no better than a pwk, the temperature compensating feature would be nice here in MN.

christph7 · Oct 29, 2012

Yeah, I thought "cool" until I saw the price. $400 is still a bit steep for the cast version but if it makes the additional power they claim it may be worth it.

barnes8889r · Oct 30, 2012

Pretty cool, im thinling of getting one to try in the spring

jcs003 · Oct 30, 2012

this is essentially a Lectron carb. old technology with a new marketing approach. i wonder what kevin at lectron has to sayabout this...

rablack21 · Oct 30, 2012

It is somewhat similar to a Lectron, but the rabbit hole goes much deeper than that. I have been doing alot of digging on this topic over at gas gas forum and ktm forum. So far, one guys on the gas gas forum has tested it and really likes it. Here is a clip of a pro mx'er that tested it. Listen to the motor on this bike. It sounds very crisp and smooth.

Several of the guys on ktmtalk forum and twostrokemotocross forum have ordered one, so we should be getting some more reviews soon.

I also sent APT an email asking about fitment for a 250R and am awaiting a response.

jcs003 · Oct 30, 2012

i prefer my lectron over my PWK and PJ, but lectron seems to drop the ball with fine tuning issues. i tested the limits of a lectron carb and that thing will run super rich and not burn down a motor when too lean. if APT takes the same technology and adresses a few shortcomings it will be a success.

rablack21 · Oct 31, 2012

I spoke with one of the owners at APT yesterday afternoon. I found out some helpful information from him. They do have a carb setup that will fit our 250Rs. Their carb is the same height and width as a PWK. The only difference is it is 3/4" longer from opening to opening. The only adjustment on the carb is for idle and low speed fine tuning. If I understand him correctly, he said that the carb could never run lean enough to burn up a piston. They will have some independent companies releasing testing feedback soon. He also said that several dirt bike magazines will be releasing side by side comparison testing against PWK and EFI and DI in the spring.

NOS_350x · Oct 31, 2012

rablack21 said:
If I understand him correctly, he said that the carb could never run lean enough to burn up a piston.

That is true IF you have the correct metering rod.
And how many different styles, lengths and tapersof the metering rod have the produced so far? its impossible to have a one size fits all, no adjustment ever type of carb.

rk88r · Oct 31, 2012

Snowmobile companies have had self adjusting carbs for years by regulating float bowl pressure. What the range of compensation is idk. If they run them up Pikes Peak that's a significant elevation change.

rablack21 · Oct 31, 2012

Check this out.

I am not their advocate yet. But if this carb works as advertised, it will certainly be an awesome add on.

rk88r · Nov 1, 2012

Even if it's only half as good as they claim it would still be better. One of you brave souls should be the first to put one on an R.

n1ck n1tro · Mar 20, 2013

Any updates yet on these carbs?

rablack21 · Mar 20, 2013

I still haven't found any info on someone who has tried it on a two stroke quad yet, but I have heard quite a bit of testimonies of guys who have been loving them on their two stroke bikes. I wasn't able to test one myself. They ran out of test carbs before I could get my hands on one.

FactoryX · Mar 21, 2013

They currently are sold out on the billet 38mm carbs, but a cast version will be released in may? Here is their facebook page for the people who use facebook:
http://www.facebook.com/PowerAPT?fref=ts

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