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Old 03-06-2010, 10:45 PM
Nougat Nougat is offline
Motorized Bicycle Elite Member
Join Date: Nov 2009
Location: Montgomery, IL
Posts: 1,332
Default Re: One Chain Drive System, How do I make this?

That's called a jackshaft kit or a shift kit.

There's a short engine chain to a horizontal shaft that goes over to the right side. Then another short chain from that side of the shaft down to a double front freewheel sprocket. Third long chain goes to the rear wheel, through the derailleur if you have one.

If you're a machinist, you can build your own. If not, buy a kit: Sick Bike Parts
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