DISRAELI GEARS

Gian Robert System

Gian Robert System derailleur main image

In the late 1970s Gian Robert bowed to the inevitable and adopted aluminium knuckles on their mid and high-end models.

The System was their mid range model, with steel parallelogram plates and pulley cage plates.

I should note that I am particularly unclear about the dates of the various Gian Robert models.


  • Derailleur brands: Gian Robert
  • Country: Italy
  • Date of introduction: 1978?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 236g
  • Maximum cog: 32 teeth (claimed by Gian Robert)
  • Total capacity: 26 teeth?
  • Pulley centre to centre: 46mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: two pivots, front sprung and rear unsprung
  • Materials: largely steel with aluminium knuckles
Gian Robert System derailleur additional image 01
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