[CR]Date of Mod "CAMPAGNOLO" derailleur

(Example: Framebuilders:Jack Taylor)

Date: Thu, 12 Jan 2006 21:54:57 -0800
From: "Chuck Schmidt" <chuckschmidt@earthlink.net>
To: Classic Rendezvous Bike List <classicrendezvous@bikelist.org>
Subject: [CR]Date of Mod "CAMPAGNOLO" derailleur

Ted Baer wrote me off list:
>
> I sent photos (see below) to hi.campy and kauzo. They both
> believe it is from the 60's because of the large spring
> retainer. I want to get one more expert opinion so that
> is why I am writing to you.

http://www.velo-retro.com/campDerail1.jpg http://www.velo-retro.com/campDerail2.jpg

Ted,

Yes, 1960s because of the size of "spring cover." ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1961 - In July a revised Gran Sport rear derailleur is introduced with a 10mm spring cover (was 8mm) to improve shifting on six-speed freewheels. Note that six-speed freewheels are not commonplace until the mid-1970s! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1963 - In October the Record rear derailleur (chrome plated bronze) is introduced. This has a revised cage shape with the pivot behind and closer to the jockey pulley and center punched rivets. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I believe your mod. "CAMPAGNOLO" derailleur is a revised and renamed Gran Sport to be sold as a lower priced derailleur next to the new 1963 Record rear derailleur. So that would date your "CAMPAGNOLO" derailleur to 1963 or a little later; my best guess.

Regards, Chuck

Does anyone else have any thoughts or opinions about the date of the mod. CAMPAGNOLO derailleur?

Chuck Schmidt South Pasadena, Southern California

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