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

Ref. 1411

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