DISRAELI GEARS

Le Chemineau (2nd style)

Le Chemineau (2nd style) main image

The 1912 Le Chemineau derailleur was developed by Joanny Panel, based on a prototype built by Paul de Vivie. In many ways it defined many of the attributes of a modern derailleur. It has a guide pulley that moves in and out, moving the chain across a sprocket cluster, it has a sprung arm that provides chain tension with a tension pulley on it, and it was controlled by a single cable, working in opposition to a spring.

Eerily the centre to centre distance on the pulley arm is 75mm - a measurement commonly found today. The tension pulley has 10 teeth - another recurring theme.

Unfamiliar to us today are the ideas of mounting the derailleur on the underside of the chainstay, and of using a toggle chain to pull the derailleur along a rod - but both these ideas would have been totally mainstream as late as 1960.

This pleasantly weathered example is one of three in this collection. I think that this example dates from between the other two. Its pulley arm is round in cross section and has a 'D' shaped loop at the top to take the spring. However its other parts are very similar to my first example.


  • Derailleur brands: Chemineau
  • Themes: Who invented the derailleur?
  • Country: France
  • Date of introduction: 1912
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 446g including mounting plate but excluding toggle chain and spring
  • Maximum cog: 28 teeth?
  • Total capacity: 28 teeth?
  • Pulley centre to centre: 75mm
  • Index compatibility: friction
  • Chain width: 1/8”
  • Logic: low normal
  • B pivot: none
  • P pivot: sprung
  • Materials: steel
Le Chemineau (2nd style) additional image 01
Le Chemineau (2nd style) additional image 02
Le Chemineau (2nd style) additional image 03
Le Chemineau (2nd style) additional image 04
Le Chemineau (2nd style) additional image 05
Le Chemineau (2nd style) additional image 06
Le Chemineau (2nd style) additional image 07
Le Chemineau (2nd style) additional image 08

Browse associated documents.












Desvages - leaflet 1920?

Desvages - leaflet 1920?

Desvagues - leaflet (1st style) scan 1 thumbnail




Desvages - leaflet 1921?

Desvages - leaflet 1921?

Desvagues - leaflet (2nd style) scan 1 thumbnail







TCF Rev Mens - 06/1924 Le 6e Critérium de la Bicyclette polymultipliée

TCF Rev Mens - 06/1924 Le 6e Critérium de la Bicyclette polymultipliée

T.C.F. Revue Mensuelle June 1924 - Le 6e Criterium de la Bicyclette polymultipliee scan 1 thumbnail


TCF Rev Mens - 08/1924 La Semaine cycliste du Dauphiné

TCF Rev Mens - 08/1924 La Semaine cycliste du Dauphiné

T.C.F. Revue Mensuelle August 1924 - La Semaine cycliste du Dauphine scan 1 thumbnail





TCF Rev Mens 02/1929 - Chemineau ad

TCF Rev Mens 02/1929 - Chemineau ad

T.C.F. Revue Mensuelle February 1929 - Chemineau advert thumbnail



TCF Rev Mens - 06/1930 Poly... ou pas Poly scan 2 of 2

TCF Rev Mens - 06/1930 Poly... ou pas Poly scan 2 of 2

T.C.F. Revue Mensuelle June 1930 - Poly... ou pas Poly scan 2 thumbnail


Le Chemineau - flyer

Le Chemineau - flyer

Le Chemineau - flyer scan 1 thumbnail




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