My 2nd build
This is a 66cc slanthead with a homemade jackshaft on a xyz 6spd chopper bike. As you can see, I built a different motor mount and also modified the exhaust. I turned the cylinder 180 deg. to put the intake in front and also ported the exhaust slightly. I'm still breaking it in but have had it up to 40mph in 5th gear(I weigh 240 lbs so it is hauling a good load) with plenty of throttle and another gear left.