Originally Posted by
mongol777
No, not entirely sure - that's why I want to re-measure tomorrow once I have crankset off. And no indication of threading outside. It does not look like Japanese BB's I worked on before - lockring looks the same but cup have shape of regular nut.
If it is a Stronglight bottom bracket behind that Stronglight crank, here's the magic decoder for Stronglight bottom bracket cup threads:
Source: Sutherland's 4th Edition
And for the lockrings:
Source: Sutherland's 4th Edition
Last edited by JohnDThompson; 03-14-14 at 08:56 PM.