I have just installed a square-taper Shimano XT bottom bracket into a Fisher Sugar with Race Face cranks. The non-drive crank contacts the lip of the "hollow barrel" on the swingarm near the pivot.
This is a mountain bike, spec'd for a 68x113 bb (and the bb is the correct size). The way I see it, I have two options:
1) Reinstall the crankarm and tighten the bolt less (to drive the crank less far up the spindle... make sense?) This doesn't seem like a good idea to me.
2) Despite specs, buy a bb with a wider spindle (assuming I can find one)... and this raises the issue of knee strain. Will a wider pedal stance cause me kinesthetic problems, like knee pain?
Originally posted by billo I have just installed a square-taper Shimano XT bottom bracket into a Fisher Sugar with Race Face cranks. The non-drive crank contacts the lip of the "hollow barrel" on the swingarm near the pivot.
This is a mountain bike, spec'd for a 68x113 bb (and the bb is the correct size). The way I see it, I have two options:
1) Reinstall the crankarm and tighten the bolt less (to drive the crank less far up the spindle... make sense?) This doesn't seem like a good idea to me.
2) Despite specs, buy a bb with a wider spindle (assuming I can find one)... and this raises the issue of knee strain. Will a wider pedal stance cause me kinesthetic problems, like knee pain?
Or does another solution to the problem exist?
If you tighten the crank part way you will just bugger it it you ride it that way. Get a longer BB spindle. A couple of mm won't kill your knees. If you ride more than one bike,very likely each one has a different 'Q' factor.
