Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm looking to replace the bottom bracket in my Windsor "The Hour" since I'm buying a new crank set for my bike. What are the dimensions for the bottom bracket: both shell width and shaft length? I can take the bottom bracket out to measure it, but I would rather only do it once while installing the new parts.

share|improve this question
up vote 2 down vote accepted

In it says:

Sealed Cartridge 103mm

Trying to find shell widths for 103mm sealed cartridges only gives 68mm as the only possible combo for 103mm the length. e.g

So it should be 68m x 103mm.

share|improve this answer
Hey, thanks for that. I was just so stuck in googling, "windsor hour bb" and such so much so that I didn't even think on looking up typical bracket standards. – arete Jul 29 '13 at 16:27

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.