CrazyDan
Well-Known Member
Friction drive certainly needs gear reduction before the roller. Most friction drive builds I have seen wear out the rear tire much faster than the front. It churns too much at low speeds, not enough friction to get to high rpms fast. Most engines that are high revving don't have much power at low rpms. You can put the power at a low rpm with a longer header, but tire grip still remains the same. I think friction drives should be kept under 2 hp, for the tire's sake.
