Pretty sure it is die cast zinc with chrome plate finish. An example of the lack of heart Campagnolo had for touring items.
Jim Merz Bainbridge Is. WA
-----Original Message----- From: classicrendezvous-admin@bikelist.org [mailto:classicrendezvous-admin@bikelist.org] On Behalf Of Mark Bulgier Sent: Wednesday, September 11, 2002 8:33 PM To: classicrendezvous@bikelist.org Subject: RE: [CR]1st gen Campagnolo rally
Charles Andrews wrote:
> http://ebay.com/
> ...seller describes a crack in the unit, but I could
> not discern it in the photos.
Not to be a smartass - but did you see the photo where the crack is
indicated with a line drawn on the photo, and, did you click the link to
"supersize" it? I thought the crack was pretty easy to see. It's on
the
inner pulley cage plate, at the upper pulley bolt hole. Not sure why it
cracked, but I bet it'll work fine and could well last forever - that
crack
has nowhere to go. If a list member wins the auction, doesn't want to
ride
the cracked one, and doesn't have a spare, I might be convinced to free
up
one of my used extras.
> These tended to crack just behind the bolt
> hole in the steel casting, correct?
I'm pretty sure the casting is AL alloy, not steel, but yes that's where they broke (the few broken ones I saw). That piece has an unusual finish on it that does look a lot like steel - ball-burnished or shot-peened before anodizing maybe? They are non-magnetic, and when you see 'em broken it's obviously Al (unless there's some other metal that looks like that - not steel though!)
Mark Bulgier
Seattle, Wa
USA