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4 Stroke Bicycle Engines & Kits 4 stroke motorized bicycle engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine

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Old 08-08-2008, 11:40 PM
shiloh0 shiloh0 is offline
Motorized Bicycle Senior Member
 
Join Date: Jun 2008
Posts: 88
Default jackshaft for 4 stroke

i was riding my 4 stroke bike today and with a 44t sprocket it was painfully slow. lots and lots of torque going to waste. i looked at it later and couldn't see any reason why a freewheel crank jackshaft wouldn't work with it. brackets for the shaft could attach to the mounting plate. changing gears would be super easy with the c-clutch. maybe im missing something but looks fairly simple.
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