Hey all - quick question.

The wife just picked up a Colnago Mexico frame and I'd like to order a BB for it. Its supposedly an '89, and the seller says it's Italian threaded - little doubt on that one. Does the BB shell width matter in sourcing a BB for this frame, or will any Italian threaded BB fit no problema?

Thanks in advance!

Any bottom bracket that uses Italian thread cups will most likely ship with a spindle intended for a 70mm wide shell.

^^^^ This

36x24 is Italian threading. Make sure the spindle on the bottom bracket matches the crank you want to use.

Thanks! Just what I was after.

One more question - I see various Campagnolo bottom brackets listed as Italian threaded with both 36x24T and 36x24F stamped on the BB cups. French threading is 35x1, correct - so what does the T versus F signify?

T="thread"

F="filo" (Italian for thread)

I think it's similar to how Campagnolo has variously marked their parts "Brev. Camp." and "Pat. Camp." where Brev. is an abbreviation of brevetto (Italian for patent) and Pat. was an abbreviation for patent.

So whether it has an F or a T is irrelevant, but implies whether it was made for the Italian market or export? Okay - that makes sense. Thanks!

The most important thing after the threading, as someone pointed out, is making sure you get the correct BB for the crankset yu intend to use. If your going to use a Super or Nuovo Record crank then you need a Super or Nuovo Record BB. If you using something newer like a Mirage or a 105 then you need a Mirage or 105 BB to match that crank.

Proof that I learn something new every day - I never knew this! Thanks

DD