Nick asked:
im just wondering cause i want a fast bike to show off.but can u put one of those engines listed above onto a schwinn stingray chopper bike. and if so what else would i need to convert it to a motor bike?
and how much would it cost thx ….best explenation get best answer thing
u could but it would probabl be too heavy. you would have to mount the motor in the middle of the bike, or have a shitload of weight at the front of the bike.
Lots of people do an call them mopeds. There are even companies out there that base their business on putting engines on bicycles.