Current Projects chat and miscellany

I know people are fed up and bored with this topic. But as a final* word from me;

I think I am now of the opinion that the 7600's are between ISO and JIS - apart from this being a fairly common opinion on the web (which is no real grounds for proof), when 7600's are fitted to a campag 111mm BB, you get a perfect chainline.

If 7600's are JIS, and are supposed to be paired with a 109.5 BB, then according to Sheldons theory of mixing tapers; using an ISO 114BB would give the perfect chainline (as using and ISO BB with JIS cranks, makes the cranks sit 4.5mm further down the spindle).

Hopefully that makes sense.

*Hopefully.

Not sure if it makes a difference but is the Campag 111mm BB asymmetrical? Also what hubs are you running?

The 7600/10 BB is 109mm. It's ISO. Others have used JIS taper BBs like the Shimano UNs (check the transmission database) but they use shorter spindle lengths as ISO cranks sit further out on JIS tapers. Using an ISO 114mm spindled BB would throw it way off. No?