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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 11-22-09, 12:42 PM   #1
sweatforfun
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chain jam

I am working on a bike with an XTR e type derailluer, mountain triple. the middle chainring is missing a tooth, located behind the crank. when shifting between the middle and largest chainring, the chain gets jammed. it isnt always in the same spot, and it can be either while shifting down or up, and only under weight. The e type derailluer may be 1/2 mil too high, but other than that looks good, i am not even sure if i know how to adjust the e type closer to the rings. but i though that the broken tooth may be the real culprit.
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Old 11-22-09, 12:51 PM   #2
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It's not broken or missing. It's a design feature.
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Old 11-22-09, 02:41 PM   #3
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How does it jam?
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