In a message dated 8/12/2002 1:32:21 AM Eastern Daylight Time, mbikealive@dslextreme.com writes:
<< From my experience, alloy bolts seem to be predominately from 1978. 1981 seems WAY too late for alloy bolts appearing on a SR r. der. >>
To which Dale added:
> I agree with Marc... SR rear derailleurs certainly started their production
> life using Ti bolts... When I was selling that stuff way back then, the
> industry word was that there was somehow a Titanium shortage (?) so Campy
> substituted aluminum alloy bolts as a temporary measure. It only lasted
> about
> a year until the Ti bolts began appearing on the derailleurs again.
>
>
> Dale Brown
> Greensboro, North Carolina
> <A HREF="http://www.classicrendezvous.com/main.htm">Classic Rendezvous</A>
>
>
The only SR rear ders. with aluminum pivots that I've seen were/are '78s and were/are the later "script logo" versions (both styles were produced with '78 dates IIRC).
Scott, are the bolts embossed "Patent Campagnolo," or are they aftermarket, such as Cobra or OMAS?
Additionally, it might be possible to use the Campy aluminum pivots in place of the Ti. ones. (Has anyone verified this physically? I vaguely remember hearing that you couldn't replace the Campy Al ones with Ti due to a diameter difference, but have never personally tried to do a switcheroo).
Greg Parker
A2 MI USA