Now thinking about it, I might go with a CVT setup, the jackshaft through the seat tube seems like a bad idea past 3HP.
Which means I have to make mounts of course.
I think a subaru ex17 or ex21 would make a cool build if you can find one. They're OHC. Also the ex13 is 126cc and 4.3 hp slightly better than stock but it also probably fits better.
I think a subaru ex17 or ex21 would make a cool build if you can find one. They're OHC. Also the ex13 is 126cc and 4.3 hp slightly better than stock but it also probably fits better.