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Post by hippo008 on Jun 16, 2022 13:06:53 GMT -5
He explained over the phone that the Scooter market is very new to them and that within the scooter market there are very few Honda tuners. I got a good chuckle out of that, there are dozens of us Honda tuners . The tech told me that they have limited experience tuning these motors and hes very happy to help but it wont be as easy as something like a GasGas 300 or KTM 300XC which they have lots of experience tuning. I was given specific instructions on what to do and how to do it then to report back with my findings.
yes there "are dozens of us Honda tuners" but only a handful of people would be willing to throw down the $ it takes for a SmartCarb or a Lectron.
sounds like you have become their first guinea pig in the Honda vert moped engine realm.
The gentleman from SmartCarb explained to me that theres some serious Honda tuners in the Dominican Republic but none of them converse with the SmartCarb team. Ive been trying to update them with more information to build their engine database. Experience with 130cc Stroker Motor & 28MM SC2 I finished by 130cc stroker motor. Its a TWH cylinder and the ports arent the greatest, certainly not JISO or Level 10 quality. Theres a Level 10 stroker pipe on there that draws a LOT of mixture.
The smartcarb performs awesome. Crisp and clean top to bottom. It needed some adjustment from the stock clicker settings but not too much. There arent any dead spots on the throttle either.
I am very impressed with the SmartCarb. Across three very different engine setups the SC2 has done nothing but perform. Even with the bad port setup on the TWH 55mm bore it still runs really well.
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Post by pete130 on Jul 14, 2022 4:19:25 GMT -5
I guessing that's usd, the only reason I haven't got one is the price, and im in Australia my dollar is only worth .68c your money so it's like near $1200 shipped, and im at sea level flat as far as the eye can see, im manly used mukini, and with the only rep shop in Australia is around the corner that and the advice of someone that's raced and used and sell them for 40years, I just can't see myself justifying paying that much, dont get me wrong they are a smart carb, and I run race motors maybe one day love to here how it went after install
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Post by pete130 on Jul 14, 2022 4:24:36 GMT -5
To answer some direct questions I purchased through SSS for two reasons. The main one is customer support. I have purchased most all of my dio parts from them and they have been willing to help me because of that. I want to keep a relationship with SSS because I know they will stand behind the stuff they sell and support the end user. That isn't to say the SmartCarb people won't support the end user, I just don't know them. The engine is a AF16 with flowed cases, 50mm bore with some pretty serious porting, 44mm Mini stroker crank, Overrange CVT, NCY racing ignition, big valve intake with carbon reeds and a NCY pipe. The pipe may change to a stroker pipe or over the tire pipe from TWH. I expect to be maxing out at about 10,000RPM and I live at sea level. It's a ported built 90cc setup basically. Honda carb sizing is weird. In any other similar build I wouldn't run past a 21mm roundslide like a Polini CP or Dellorto PHGB. Hondas really like the big carbs, it's sort of building tradition. I think it's because of the bad intake ports on Hondas. With the intake being off the side of the crankcase you get very poor filling. With a larger size venturi you help compensate for that filling problem. I've run 28mm carbs on a Corsa w/ arrow pipe with no real issues. OK Temps, great off the line, etc. Additionally I consulted a local Dio guy and he runs a 28 SC2 on his built mini stroker and swears by it. It's his favorite setup out of all his builds. You can run big carbs on 2t and get away with it, and more fuel more power in my books, I run a 35mm on a 94cc with port work. I'm thinking the 28mm is ok for 70cc high end race, guess it depends on the carb as well, Iv ran a 24mm tm mukini on 70cc but stage6 race mk2 and evo3 both with a c30, but there not realy high end motors to me, more just race
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Post by hippo008 on Jul 16, 2022 19:10:05 GMT -5
After living with the smartcarb for a while now I have a final verdict.
If you have a specific need like the zero spill design, greater fuel economy, ease of use and/or you own a high-end performance motor the smartcarb is a worthwhile purchase.
I would *not* buy a smartcarb over a Polini PWK, Dellorto or Mikuni if you have a street-tuned setup or a close to stock engine. Your money would be better spent on upgrading your gears, CVT or crank before you buy this carb.
In my opinion the SmartCarb really shines at the fringes, the unusual or special motors seem to benefit the most. I originally ordered the SC2 for my 90cc mini stroker. It performed well but no better than the 26mm Polini PWK had before it. The smartcarb really shined on my 70cc race setup and my 130cc stroker motor. The high revving 70cc and the mixture-hungry 130cc really played into the SC2s strengths in ways a more mild motor wouldn't. Of course the 70cc and the 120cc are also high dollar motors, lots of money was invested in each engine so spending another $650 to make either build really shine wasn't so painful.
If I were to build an RC-1 like Brent (love the videos by the way Brent) a 100cc RoosT Havoc motor or any similar high-end racing motor with a high RPM target I wouldn't think twice about buying a smartcarb. In fact I wouldn't build a high end motor without it, the SC2 would be item one on the purchase list.
If you have one of those special/unusual motors I wouldn't hesitate to buy the SC2.
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Post by Lucass2T on Jul 19, 2022 4:18:47 GMT -5
Thanks for all the info you put here. A shop like SSS should do a carb shootout with dyno numbers and some other data like ease of setup, swapping parts, fuel consumption etc.
If I was building an RC1 motor I guess I wouldn't bother with these fancy carbs. Just don't see the benefits over a 'normal' high-end flatslide carb.
What does it weigh btw? If it's heavier than let's say a keihin pwk 28, Polini CP or any of the flatslide Dellorto's none of the competition machines are gonna make use them. Thats where the money is.
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Post by 90GTVert on Jul 19, 2022 8:20:17 GMT -5
A shop like SSS should do a carb shootout with dyno numbers and some other data like ease of setup, swapping parts, fuel consumption etc. When directly profiting from carbs like these, I'd be surprised if hard facts would be beneficial to your bottom line. It's prob best to let people dream about what fancy carbs will do.
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Post by Lucass2T on Jul 19, 2022 8:55:40 GMT -5
Thats how you test stuff you know... But your probably right.
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