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Old 06-29-2009, 10:02 AM   #19 (permalink)
fatcaaat
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Join Date: Sep 2004
Location: Arlington, VA
Posts: 3,780
Re: New Validated Speed on YX177V2. 85mph

Quote:
Originally Posted by slimbo View Post
can you tune a little more out?
Is this a joke?

I have to wonder if it is possible to go much faster on one of these. I think if I popped on a 184cc kit, that may give me fractions of additional HP. If I would run skinnier tires or over inflate them maybe some more speed. I guess I could ditch the heavy duty chain too. It has a WIDE open exhaust on it and is OBSCENELY Loud...i could experiment with the exhaust and intake lengths too. I could lighten it up...its a pig with the steel rims, the sold stainless extra gas tank, the heavy steel bars, the heavy trees, remove the battery, heavy forks, buddy pegs, rear rack. I'll get my buddy that weighs 50 lbs less than me to see what happens with that instead. But based on all that, it would have to be regeared since theoretical max speed is 87mph based on gearing at 10500rpm. And it didn't reach the max RPMs so it currently does not have enough power to go any faster.

As for the rev's, I think 10500 is the maximum a YX160 should ever turn else it will grenade IMO. I had it tached to 10100 at 85mph. I thought that maybe a 28mm carb could help, but the VM26 gets it to 10100...I don't think a 28 will get 400 more out of it...i think its the limit.
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