Howdy gang,
regarding the codes on Campy bottom bracket axles: the
1974 Cyclo-Pedia catalog had a nice chart showing the
axle lengths, codes, uses (road vs track), etc. It
even shows the details of how much axle extends past
the cups on both sides! Lots more detail than you'll
ever find in a catalog nowdays!
You can find this on page 14 of the catalog, which
can be viewed courtesy of Mark Bulgier and his huge
tracts of hard drive:
http://bulgier.net/
later, Steve Kurt Peoria, IL
>
> << > [CR]Campy bottom bracket codes
>
> The 70 and 68 refer to bottom bracket shell width. 70 is Ital. and 68 Eng.
> The "P" is for Peista (Italian for track) 120 the over all length of the
> spindle, I never knew what the "Z" meant but it was dropped in 1978
>
> Kevin Casey
> >>
>
> Hi Kevin:
>
> You are close, but the 120 does not refer to the spindle length - it refers
> to the rear hub spacing that the spindle was designed for (this designation
> was dropped after 1977).
>
> 68mm was used for English, French, and Swiss (and in rare circumstances,
> Italian) BBs. 70mm was generally used only on Italian-threaded BBs (as you
> stated).
>
> SS is Strada (road)
> P is Pista (track)
> C is Ciclocross (Cyclocross, 'natch)
<...snip...>
> The best place to get all of the gory details is probably in the Sutherland's
> Manual or any Campagnolo catalog (although Sutherland explains it in more
> detail).
>
> Hope this helps a bit.
>
> Regards,
>
> Greg "movimento centrale" Parker
> Ann Arbor, MI USA