Hi rew id first like to say that in this hobby you find yourself going through lots of poor quality stuff because your pushing the limit of things i.e. putting a motor a on a bicycle. I wish someone would of told me to start of with quality bicycles, bolts, gaskets, and quality high performance parts to avoid wasing time and money. The closest thing to a motorcycle while still being a bicycle is a worksman.
I bet you will drool over them if u like motorcycles. But i have a 80's schwinn and it get the job done good as high performance motorized bicycle.