DISRAELI GEARS

RBM (1st style)

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There is a deep well of admiration for Huret in Argentina. Gambato produced a copy of the Huret Allvit. JC copied both the Huret Svelto and Huret Eco. And here we have RBM also producing a very exact copy of a Huret Eco.

Unlike the JC models, the RBM is well finished, competently plated and produced to very respectable tolerances. Not too bad at all.


This, well used, example has:

  • a Huret-style rotation stop at the b-pivot and a Huret-style hanger plate. The extra hole in the hanger plate has been drilled by an over-enthusiastic user.
  • An earlier design of the plastic piece at the adjustment screws that prevents them from loosening.
  • A rather precise criss-cross background behind the lettering on the outer parallelogram plate.


  • Derailleur brands: RBM
  • Country: Argentina
  • Date of introduction: 1988?
  • Date of this example: no idea
  • Model no.: unknown
  • Weight: 254g including hanger plate
  • Maximum cog: 28 teeth (based on an equivalent Huret Eco)
  • Total capacity: 31 teeth (based on an equivalent Huret Eco)
  • Pulley centre to centre: 50mm
  • Index compatibility: friction
  • Chain width: 3/32"
  • Logic: top normal
  • B pivot: unsprung
  • P pivot: sprung
  • Materials: steel
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