DISRAELI GEARS

CMP Synchro

CMP Synchro derailleur main image

Ah, the 1930s! When derailleur designers adopted a completely new mechanism every other day of the week. The CMP Synchro uses a double cable to rotate a wheel that uses a rack and pinion layout to drive the pulley cage in and out.

It probably worked OK, if you like that kind of thing.


  • Derailleur brands: CMP
  • Country: France
  • Date of introduction: 1938?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 264g including 'U' bracket which may not be original, and excluding pulley cage spring
  • Maximum cog: unknown
  • Total capacity: unknown
  • Pulley centre to centre: 67mm
  • Index compatibility: friction
  • Chain width: 1/8”?
  • Logic: no 'normal' state
  • B pivot: none
  • P pivot: sprung
  • Materials: mainly steel with some rather fetching brass small parts
CMP Synchro derailleur additional image 01
CMP Synchro derailleur additional image 02
CMP Synchro derailleur additional image 03
CMP Synchro derailleur additional image 04
CMP Synchro derailleur additional image 05
CMP Synchro derailleur additional image 06
CMP Synchro derailleur additional image 07
CMP Synchro derailleur additional image 08
CMP Synchro derailleur additional image 09
CMP Synchro derailleur additional image 10
CMP Synchro derailleur additional image 11
CMP Synchro derailleur additional image 12
CMP Synchro derailleur additional image 13
CMP Synchro derailleur additional image 14
CMP Synchro derailleur additional image 15
CMP Synchro derailleur additional image 16
CMP Synchro derailleur additional image 17

Browse associated documents.