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Old 05-28-2012, 06:05 PM
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tooljunkie tooljunkie is offline
Motorized Bicycle Elite Member
Join Date: Apr 2012
Location: Manitoba,Canada
Posts: 659
Default Re: is my chain to high on the back sprocket

i put a straightedge on the plate part of the big sprocket,and make sure the motor sprocket is close to in line with big sprocket.
i also stand above rear wheel and look straight down on chain,with bike straight ,chain should be in line also.i noticed my tensioner was not centered so i bent bracket to make chain roll in middle of tensioner wheel.

when i installed sprocket,i pulled wheel off,put parts on loose,re-installed wheel
and spun wheel around and tightened sprocket bolts evenly.(bike upside-down )

if motor can be moved at all in frame,in any direction,chain can derail.
i welded my brackets to the frame.
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