DISRAELI GEARS

Diamond

Diamond derailleur main image

This beautiful Diamond derailleur is a surprisingly nicely made, and splendidly eclectic, amalgam of many different designs:

  • The main theme is clearly that of a 1970s Shimano 600 EX Arabesque. Even Shimano's 'Arabesque' patterns get a deferential nod.
  • The cable routing, cable adjuster and cable clamp are borrowed from a 1970s SunTour V Luxe.
  • The adjustment screws mounted above the outer parallelogram plate are very reminiscent of a 1980s Huret Rival.
  • The combination of black plastic knuckles and shiny metal parallelogram plates is very 1970s Simplex.

That's a list of all the main derailleur brands of the mid-to-late 20th Century, with the notable exception of Campagnolo!

If you want to know more about my guesses about the Diamond brand or the possible dates of this derailleur - please see the Diamond brand page.

This derailleur is a favourite of mine.


  • Derailleur brands: Diamond
  • Themes: Ultra-lightweight - touring/mountain bike
  • Country: China
  • Date of introduction: 1993?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 201g
  • Maximum cog: 28 teeth (guess based on 1970s Shimano 600)
  • Total capacity: 28 teeth (guess based on 1970s Shimano 600)
  • Pulley centre to centre: 46mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: sprung
  • P pivot: sprung
  • Materials: largely aluminium with plastic knuckles
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