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Old 01-22-2015, 12:03 PM
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mapbike mapbike is offline
Motorized Bicycle Elite Member
Join Date: Mar 2010
Location: Central Texas
Posts: 5,379
Default Re: Top Speed, 80cc Chinese motor? what is the record?

Originally Posted by Davezilla View Post
When I was doing my top speed runs I noticed it didn't matter if I was upright or ducked way down, the speed was about the same, but I think the engine is rpm limited due to the rather small carb and just won't go past that rpm under load... I got a 20mm Tilly carb I want to try out to see if it'll go fastrer on top and I'm pretty sure it'll give a nice midrange and top end power boost as well.
Yep if she is starving for a drink at high rpms your gonna be limited, kinda like a 406 Small Blocjk chevy I built years ago, it would run with a little 1850 600cfm holley vac secondary carb, but when I stuck the old 7010-1 780cfm dual line on it it came alive.

When the engine needs more air and fuel there just isn't a substitute.
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!
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