I think they are all bronze or brass. The early cams in my experience have exceedingly thin chrome plate and it practically wipes off. I like the look of them sans plating polished up, but obviously it will eventually tarnish and have to be repolished to retain the look. The later ones seem to have more durable plating.
Just my personal observation.
Kurt Sperry Bellingham WA USA
On 2/7/07, Anthony Bier <scratcheduprecord@hotmail.com> wrote:
>
>
> Dear Listers,
>
> While we are on the subject of chrome plated bronze (or brass?) parts of
> early campagnolo components, such as the arms of the first generation record
> FD, I would like to make an inquiry about early campagnolo record brake
> calipers. The quick reliease cam mechanisms on a set which I recently
> cleaned up are brass (or bronze). I discovered this as a bit of metal polish
> exposed some of it so I decided to polish away with autosol and a rag till
> I had glimmering brass cams, since most of it was already exposed. I do not
> believe later record brake cams are made from brass, are they? Would anyone
> know when they changed or if they changed and it is just a peculiarity that
> the chrome was removed so easily from mine? I have polished later versions
> and not had this happen, I had assumed they were steel.
>
> Thanks
>
> Anthony Bier
>
> Vancouver, BC
>
>
>
>
>
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