MajorMantra
Well-Known Member
- Location
- Edinburgh
Apologies for the boring question but my research hasn't answered it...
I'm considering changing the chainset and BB on my 1980s Bianchi Super Leggera. This doesn't hold any particular terror since I've had BBs on other bikes in and out 3 times before. However, I am a bit puzzled about this one.
It says 36x24t on the BB so I take it that it's an Italian thread. The strange part is that the BB shell measures 68mm across. Is there such a thing as a 68mm Italian BB? Will a new Shimano BB-5500 109x70 Italian fit and will it need a spacer?
Cheers,
Matthew
I'm considering changing the chainset and BB on my 1980s Bianchi Super Leggera. This doesn't hold any particular terror since I've had BBs on other bikes in and out 3 times before. However, I am a bit puzzled about this one.
It says 36x24t on the BB so I take it that it's an Italian thread. The strange part is that the BB shell measures 68mm across. Is there such a thing as a 68mm Italian BB? Will a new Shimano BB-5500 109x70 Italian fit and will it need a spacer?
Cheers,
Matthew