Re: [CR] another Osgear/Super Champion question

(Example: Production Builders:Cinelli:Laser)

From: "Peter Brueggeman" <4peebee@peterbrueggeman.com>
To: <classicrendezvous@bikelist.org>
Date: Fri, 19 Mar 2010 18:26:13 -0700
Subject: Re: [CR] another Osgear/Super Champion question


Kurt Sperry said "...why in the '50s did major derailleur producers such as Simplex, Huret and Cyclo produce distinct derailleur models for 3, 4 and 5 cog freewheels? ..."

In addition to the range of travel design mentioned by Neil Foddering, some manufacturers had rear derailleurs specific to 1/8" inch chain or 3/32" chain. Among the several Simplex 303T rear derailleurs I have, those marked for 3/32" chain won't run a 1/8" chain because the pulley cage is too narrow. The derailleur's chain capacity is marked on the derailleur, so it's no surprise. Some manufacturers like Cyclo Benelux had a pulley cage wide enough to accept either chain width.

Peter

Peter Brueggeman
La Jolla California USA
4peebee(at)peterbrueggeman.com