DISRAELI GEARS

Gambato Gran Sport

Gambato Gran Sport derailleur main image

The mid 1970’s Gambato Gran Sport is a faithful copy of the 1953 Campagnolo Gran Sport - it just got lost somewhere for a couple of decades.

Note the details; the sprung pivot is on the axis of the pulley wheels, so this is definitely not a copy of the more modern 1963 Campagnolo Record, the steel pulley wheels have ball bearing races and do not have teeth, the knuckles and even the pulley cage plates are bronze...

Finally, this example is in very nice condition, and looks brand new, but... the low gear and high gear adjustment screws do not align with extension that holds the cable clamp bolt. You could bend the extension to align correctly - but then the cable clamp bolt hits the rear parallelogram plate. To make it all work you need to cut down the cable clamp bolt and then bend the extension. This idea of a consumer product, not as a finished, working, item but rather as the starting point for an extended fettling session - this idea is very 1950s.

It’s as if the 1960’s never happened in Argentina - perhaps they didn’t.


  • Derailleur brands: Gambato
  • Country: Argentina
  • Date of introduction: 1973?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 313g
  • Maximum cog: 32 teeth (Campagnolo’s unlikely figure for the Gran Sport)
  • Total capacity: 26 teeth
  • Pulley centre to centre: 45mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: unsprung
  • P pivot: sprung
  • Materials: largely bronze, with steel parallelogram plates
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