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what can you use for a bike engine cheaply or stuff that is laying around the house? Answered

I would like to attach a engine to my bike so i dont half to pettal as much but still have the option to i wont to go fast and it go fast and strong and a gas engine so can someone help me



Always go downhill. That's very cheap.

Check Craigslist of a close city for a self propel mower. Chain saws have a centrifugal clutch( you won't need to use a clutch like a stick shift car.) there are engines under $10 sometimes.