Hey, thanks for the replies. How did you pull up the detailed info re: FC-M etc. etc.? I need to get up to speed on this stuff. I loaned him a Deore XT crankset off my old neon green Diamondback Axis Team race bike. The DB is 10 years old or thereabouts, so it's a square taper XT. I don't know anything about the newer Octalink sets.
Oh, OK, spindle length. The UN-26 BB is supposed to be a 73/123. According to Shimano and several websites. I know this is a really lame question, but does the 123 refer to the tips of the spindle shaft, or the width of the cartridge? The 73 refers to the diameter of the cartridge, right? Or the threaded cartridge pieces?
I suggested going with Deore stuff because he beat up on the cheap Acera chainrings in a matter of weeks. This guy isn't overweight, he's just been riding a lot on rocky, muddy Washington State logging roads and trails. It never even occurred to me that there were parts within the Acera line, and/or whatever lines exist between Acera and Deore, that have replaceable chainrings.
Replying to reptilezs' post, is the Alivio line markedly tougher than Acera? Basically what I'm asking here is what level would you recommend for a guy who's riding several times a week? ALong the same lines, I see FSA and other cranksets that seem like they might be compatible. Any thoughts on alternate brands that would be a bolt-on replacement?
Last edited by Telkwa; 09-19-10 at 09:14 PM.