Nomad got it. This guy was using a 79.oo bike trying to go 30 mph for sustained length of time. The bike was designed to go 12mph and that is just as fast as it should go. Anything above that is a gamble. The little happy engine is a helper engine for motor assist. we have fun making them run better than intended and then use discretion when riding, some through caution to the wind, but I think most know the safe speed for a 79.oo bike. And I think he over torqued the bolts, I still have the original ones after 3 years running. I say he did not have the chain adjusted correctly and it derailed and jerked the engine over and broke the motor studs, look at the L/H cover, and the wadded up chain. Have fun, Dave

PS: Happy Times forever, and put the pedals back on. Its not a motorcycle.

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Chuck - The monkey has the spark plug again!