Re: My electric start full suspension predator 212 build
Oh. It was a 3.5hp flathead. almost double the displacement as the 79cc but only .5hp more.
Try a 9 or 10:1 then.. 9 might be a little tall as well.. it depends on whether you want to turn high rpm's and accelerate better or turn low, pedal assist, and have a good rpm on your cruise..
multiply your engine rpm by the MPH-wheelRPM number .077xxx and divide by your gear ratio, that will give you the mph per engine rpm for a 26" wheel.
I don't always listen to Alice in Chains..... but when I do, SO DO THE NEIGHBORS