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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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Old 04-23-2009, 06:17 PM
Seanik Seanik is offline
Motorized Bicycle Newbie
Join Date: Nov 2008
Location: Erie Pa
Posts: 17
Default Sprocket size help

I recently acquired an OCC chopper and decided to power it with an 80cc 2 stroke slant head. I thought about a 4 stroke but it looks like it would be a tight fit. Also bought a modified seat on eBay that puts the rider back about 9". The chopper has the fat tire 20" rear wheel and was wondering what size rear sprocket to get, most kits come with a 44T sprocket, it seems this would make for a slow ride. At 250 lbs and moderate hills I'm thinking a 36T or 41T sprocket is what I should install to compensate for the 20" rear tire. I would appreciate some advice.
I also have a Schwinn point beach with a dax 4 stroke rear mount and a 48t sprocket that pulls great on the hills.

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Old 04-23-2009, 07:34 PM
Creative Engineering Creative Engineering is offline
Join Date: Sep 2008
Location: Clearwater, FL
Posts: 1,668
Default Re: Sprocket size help


If you want the same ride as your other bike, use a 38T.

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