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Old 03-28-2013, 12:01 PM
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Nashville Kat Nashville Kat is offline
Motorized Bicycle Elite Member
Join Date: Apr 2009
Location: Jacksonville, Florida
Posts: 1,403
Default Re: direct drive an 18T fixie sprocket?

Probably too much gear for the motor. That small a rear sprocket is a really really big gear.

I've often thought a track cog and lockring would be the best solution- particularly for the kind of riding I do onm the motorized bicycle

but I searched the net a few years back and the largest track cog I could find was I think a 22-

there's also a problem with the lockring then- which is designed to lock on the PEDAL side- and the force is pulling it from the opposite direction then on the motor side.
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