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Old 06-02-2012, 07:26 PM
Nashville Kat's Avatar
Nashville Kat Nashville Kat is offline
Motorized Bicycle Elite Member
Join Date: Apr 2009
Location: Jacksonville, Florida
Posts: 1,403
Default Re: is my chain to high on the back sprocket


I can see some problem here in the last first picture- your tensioner is at an angle to the motor sproket, chain and back sprocket.

- it's a victim of the frame's chain stay angle

What I would do is get a crescent wrench- a fairly big one 10 or 12 inch- an 8 inch may work if you're strong, and with the tensioner tight on the frame, bend it slightly to the same angle using the flats of the crescent wrench- I don't know if you've ever done this similar thing with brake arms- but years ago we'd do this to Weinmann caliper brake arms to "toe them" into not squeaking. It may be hard to bend being such sturdy steel, so be careful

but the way the chain runs across the crooked tensioner now and is diverted is probably a goofd deal of your problems- that chain has to run straight from front to back

It also looks as if you need to then move the tensioner slightly forward to get more room on the right side of tension pulley wheel- this would lessen the extreme angle off the tensioner a bit too.

I'm sorry you're having these problems -it just looks like you have a fairly tough frame to fit here.

bend positioner counterclockwise and move it forward
Attached Images
File Type: jpg rotatecounterclock.jpg (207.9 KB, 21 views)

Last edited by Nashville Kat; 06-02-2012 at 07:41 PM.
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