David Goerndt wrote:
>
> The reason I'm asking is that I have two Record derailleurs, one with
> plastic pulleys and one with metal pulleys/no teeth. There are subtle
> differences in the details and shapes of the parts that make up the whole.
> It's hard to describe, but I'll post some photos a show the variations. I
> don't know if this is just a variation in maufacturing or actual design
> changes over the years.
There are pretty big differences in the castings as the molds wear in use and are replaced. Most notable is the dimple texture in the shifters and in the diamond-shaped clamp of the Record front derailleur over the years. The shapes of the pivot pieces on the Gran Sport, Record and Nuovo Record rear derailleurs also vary quite a bit. I don't know how you would actually tell the year of manufacture from any of these subtile differences though...
Chuck Schmidt South Pasadena, Calfornia http://www.velo-retro.com (Campagnolo Timeline on site)
ps Still waiting for those additions and corrections to the Timeline.