Originally Posted by
frantik
my bike polo bike has a BB which is too short for the frame.. the current crankset just barely clears the chainstay. one night at polo something happened so the arm wouldnt clear the stay any more. i tried to bend the crank arm using a lot of brute force but in the end i just borrowed a file and ground it down until it cleared again
I'll bet it shifted slightly on the taper. Remounting the crank might help. Or not.
On my fixed-gear, I run double cranks with a shorter-than-spec BB in order to mount the chainring on the outer position (one wonders why I don't just buy a SS crank). I've had to file a little off the inner end of the NDS arm to clear the chainstay, but running 165mm cranks helps.