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Chain Rubs F. Derailleur: BB?

762 views 4 replies 3 participants last post by  tenbsmith 
#1 ·
My chain rubs my front deraileur, but only when I am going uphill and making a down-stroke with my right leg. My bottom bracket (BB) is crunchy and has some wiggle in it. I'm thinking that the worn out BB is allowing things to flex under load and this is causing the rub.

What do y'all think?
 
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