> I'm assuming you mean Comsumer Products Safety
> Commission,
> but why would these changes be made for safety
> reasons? Hmmm.
The front edges of the front derailleur cage were
deemed some sort of hazardous protrusion, so Campy had
to put rolled lips on these edges. This required that
the distance between the outer ring and the right arm
be increased for clearance. The changes in the crank
required that the BB be redesigned to restore the
chainline. One tiny change for Uncle Sam, three
redesigned parts with limited interchangability.
Revised hub QRs, brake QRs, coated tire guides and
rear derailleur spring covers also arose from the CPSC
regs, but the crank BB change was the only
compatibility issue.
>
> So, would markings of 68 (or 74) == SS (or P) == 120
> (or 110)
> indicate pre 1977, then the same markings along with
> the +1.0/+1.5
> indicate about 1977, and the 68 == SS indicate post
> 1977?
That's pretty much it, though 1977 may have been the last pre-CPSC year rather than the first post-CPSC year.
Tom Dalton
> _______________________________________________
> Classicrendezvous mailing list
> Classicrendezvous@bikelist.org
>
http://www.bikelist.org/
__________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com