hey guys i've built a motorized bike using a 27cc weedeater engine. i mounted the engine in the frame and used the pedal crank as a jackshaft. the bike is a 26'' mt bike. i used a custom made ten tooth sprocket on the output of the engine which runs a chain down to a 48tooth sprocket on the left side of the jackshaft. On the right side of the jackshaft i have another 10tooth sprocket going to a 48tooth sprocket welded to the rear cassette. I have a 23 to 1 gear ratio and the bike does take off on its own power, but a lil slow. It tops out about 25mph(guesstimate no speedo). the bike rides great but i wish i had more take off with out sacrificing top speed. I noticed that the clutch starts engaging at a pretty low rpm. My thinking is that if i could keep the clutch from engaging util the engine is at a lil higher rpm it will take off easier.. But that is what i'm thinking i haven't had much experience with centrifugal clutches so i might be wrong. Is there any way that i can keep the clutch from engaging until a higher rpm?? I think lightening the weights in the clutch would work but i'm not for sure..
So if anyone knows how to make the clutch engage at a higher rpm please let me know how..
So if anyone knows how to make the clutch engage at a higher rpm please let me know how..