Join Date: Jul 2003
Bikes: 2000 Norco Team 853
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Yet another bottom bracket question...
I don't really know thing one about how the bottom bracket works, but yesterday I had my bike in at my LBS and they "re-taped" my BB. Well, now the crank arm on the right side very slightly clips my chainstay when I really hammer with my left leg (due to flex). When there's no load on the pedals the crank arm clears the chainstay, but under heavy pedaling something (either the frame or the BB) flexs enough that it hits. Thing is, this didn't happen before and upon close inspection I realized that the crank arm on the left has more clearance than the crank arm on the right.
It would seem to me that the whole problem could be solved by properly centering the BB, but again, I have no idea how these things work. Is it possible to adjust the BB slightly from left to right, thereby evening out the clearance on both sides?