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BB compatibility

Old 03-12-06, 02:33 PM
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BB compatibility

Are you tiring of my Trek850 questions?

Looking on fleabay, there are a lot of octalink BB and cranksets. Are those compatible with the frame of my Trek850? Is there any reason why I can't use a 'road' triple on my MTB frame since I'm turning it into a faster commuter? The bike currently has a top pull FD, I'm assuming this would work with a road triple too?
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Old 03-12-06, 04:32 PM
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The MTB front derailleur won't match the radius of a typical 52 or 53T large chainring on a road crank since they are usually intended for a 42 to 46T large ring. You will have to set the derailleur higher than ideal and the shifting will be mediocre at best.

A road front derailleur would solve the problem but I've never seen a top pull road fd.
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