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Old 03-02-2013, 07:57 AM
curtisfox curtisfox is online now
Motorized Bicycle Elite Member
Join Date: Dec 2008
Location: minesota
Posts: 3,517
Default Re: BMX with 35 cc 2-stroke engine - 3rd

Originally Posted by denmasardhy View Post
hi dan,

good that i dismantled the pulley/sprocket last night.

i drill 3$ pulley in axle diam size, then make bigger opening for both end using lathe for bearing housing (you can see the outer bearing and just the same for the inner). and the chain sprocket, weld into mounting that fit with inner side of the pulley (also as stopper for inner bearing). the stopper for outer bearing is the 4 bolts that also act as holder for entire assembly.

once the pulley assembly put into the axle, you can have the idea that between pedals/axle and pulley/sprocket are independence due to the internal bearing.

here is some pic and let me know for more detail required
Be cool if one could incorperate a freewheel in there you could pedal start it.

Nice build love the simplisity of it,GREAT JOB............Curt
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