I need to replace the bottom bracket in my 1998ish GT Tequesta. I'm going to put an FC-M442 crankset on it (http://www.chainreactioncycles.com/Mode ... elID=46021
, bargain innit) and am not sure enough of how to interpret http://techdocs.shimano.com/media/techd ... 657937.pdf
to know what bottom bracket to buy.
I think I need a 73mm shell for my frame (I'll check this before buying), but is it telling me that I need a 113 spindle? I don't know what my chain line is, or what I want it to be. I'm thinking of buying a UN55, 73 x 113, would that be sensible?
While we're on bottom brackets, I would like to advise everyone to avoid SunRace (as if this will be news to you...). My girlfriend had one. It worked perfectly for nearly 2 years with no play, but then a couple of weeks ago started clicking and within an hour fell apart completely - bearings all over the road. I had to tow her + bike + luggage the last 10km to a campsite in a town with a bike shop! Not the most helpful mode of failure.