K. A. Thomas wrote:
> As I understand it and have been told, this was a feature to aid
> and abet moisture removal within the BB to exit said area. Is this one
> of the "thick cup" BB's? I'm hazy at this hour of night - but seem to
> recall being told that the "rifling" on the cups was only on the thick
> cup BB's. Hope this helps and hope for clarification and refinement if
> I'm in error.
That's correct. This rifling was also present on the Nuovo/Super Record pedal spindles for the same reason. KKT copied this for their very nice "Pro-Ace" pedals, but I'm not aware of any non-Campy BB cups with this rifling.
--
John (john@os2.dhs.org)
currently in London, UK