Originally Posted by Moistfly
I know this thread has been done before but I couldn't find exactly what I needed so sorry
Anyway, I currently have an FSA RPM crankset with an FSA ISIS Cartridge BB (standard BB on a felt 45 if that helps) ... Anyway my chainring really needs to go and looking at replacements I don't know how to distinguish what cranksets will be compatible with my current BB ... can someone explain the basics of the BB (different' threads, what "cups" are etc...) ... or at least let me know what BB's would be compatible
I'm interested getting a crankset similar to this
http://www.performancebike.com/shop/...e.cfm?SKU=2371
but I don't know if I'd need to replace the BB as well
You do, the ISIS spline pattern is different from Shimanos.
Threading of the frame won't be an issue. All recent bikes that weren't made in Italy use the same ISO threading.
See:
http://sheldonbrown.com/bbsize for details
Sheldon "Interchangeability" Brown
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