RE: [CR]Gran Sport rear derailleur timeline?

(Example: Framebuilding:Tubing)

From: "Tory Werne" <twerne@bellsouth.net>
To: <marcus.e.helman@gm.com>, <classicrendezvous@bikelist.org>
Subject: RE: [CR]Gran Sport rear derailleur timeline?
Date: Mon, 18 Dec 2006 12:08:56 -0500
In-Reply-To: <OFF66DAA6E.B9F0A554-ON85257248.005AD237-85257248.005C3713@gm.com>


Marcus Start Here : http://www.velo-retro.com/tline.html

Regards, Tory Werne Woodstock, Georgia USA ----------------------

-----Original Message----- From: marcus.e.helman@gm.com [mailto:marcus.e.helman@gm.com] Sent: Monday, December 18, 2006 11:47 AM To: classicrendezvous@bikelist.org Subject: [CR]Gran Sport rear derailleur timeline?

I have an old Campagnolo Gran Sport rear derailleur. It is chrome plated bronze. I know almost nothing about these, but my sense is that they developed very rapidly in the 50s, sometimes changing within a single year. Is there a resource for understanding the evolution of these derailleurs? I found John Siemsen's Pave album in Wool Jersey, but that doesn't document the history of the derailleurs.

Best regards,,
Marcus Helman
Huntington Woods, MI