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Old 09-20-2008, 11:47 AM
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Biker Mike Biker Mike is offline
Motorized Bicycle Elite Member
Join Date: Mar 2008
Location: Cropwell Alabama
Posts: 143
Default Re: chain tensioner modification

Originally Posted by Biker Mike View Post
Here is a tensioner I put together for under $3.00 . I used the kit roller and part of the bracket. The springs are 2 in a pack for $1.00 and the 2 metal pieces are .80 cents each. .40 cents for the center bolt.
Well, it looked good and seemed like a good idea at the time. It worked ok, but I don't like the spring I used. It did not put enough tension on the chain and when i let off the throttle, the chain gets a lot of slack on the top side because the tensioner drops down from the pressure. I do not want to take any chances on the chain jumping off. I may still experiment with different springs and see what happens. I am considering attaching a spring above the idler and have it PULL up. I'll update if I figure it out.

A work in progress...
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