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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

Chain problem


Discussion at Motorized Bicycle Engine Kit Forum in the Motorized Bicycle Trouble Shooting forum. Originally Posted by VENICE BOY There are three things that you must do... #1 Make sure your rear sprocket spins ...
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Old 10-04-2009, 11:56 AM
Motorized Bicycle Member
 
Join Date: Sep 2009
Location: Indiana
Posts: 21
Default Re: Chain problem

Quote:
Originally Posted by VENICE BOY View Post
There are three things that you must do...
#1 Make sure your rear sprocket spins perfectly straight!!!
#2 Make sure your chain tensioner is feeding the chain straight onto the rear sprocket & then drill a hole & SCREW IT INTO THE FRAME!!! You can also bend the tensioner to make it line up with the chain a little better.
#3 Make sure your engine isn't moving around... NO RUBBER MOUNTS!
was screwed into the frame, drilled the hole bigger where the water bottle was supposed to be mounted.

fixed the problem by shimming the bolt head so there was no play and used some large washers and 2 nuts+thread compound on the other side.

I have a 1.25 inch frame and the motor mounts that came with the kit were for a 1 inch frame.

btw if you strip the front studs on the grubee motor mounts, there is a "help" brand water pump stud kit that works as a perfect replacement for 4 dollars. still looking for some good rear stud bolts to replace the cheap chinese ones on the rear motor mounts. they are easily stripped.
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