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Old 09-19-2011, 10:55 AM
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CTripps CTripps is offline
Motorized Bicycle Elite Member
Join Date: Aug 2011
Location: Vancouver, B.C.
Posts: 1,311
Default Re: Avid cyclist looking to build 1st motor bike

For the 66cc motor kit you'll need 15" on the seat tube and 15" on the downtube. If you print this out to scale you can hold it to the frame and it'll also give you a good idea of the engine size. You'll also need at least 5" between the cranks to clear the motor and exhaust.

Good luck, and welcome to the forum.


Any day that starts with a good ride is already a better day, and a bad day riding still beats a good day working.

My Builds: My Beast, Harley59's bike, my Cruiser
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