DISRAELI GEARS

Simplex Fun Bike

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This is a pleasantly clean example of a Simplex Fun Bike. Its features are:

  • The outer parallelogram plate is black with a logo that a middle-aged French bicycle component designer might think is 'funky'. there is also a ridge along the bottom to protect the adjustment screws.
  • The derailleur is claimed to be coated in Teflon. The knuckles do appear to have a plasticised finish.
  • The cable route can be switched between 'standard spaced 5 & 6 speed sprockets' to 'compact spaced 6 & 7 speed sprockets' by rotating a small back plastic component.
  • The pulley cage plates are black and possibly Teflon coated.
  • The pulley wheel bolts have Allen heads
  • The cable clamp uses an Allen bolt.
  • The cable adjuster is black.

This derailleur is notably similar to the Stratec TS700.


  • Derailleur brands: Simplex
  • Categories: Simplex - the bitter end
  • Country: France
  • Date of introduction: 1988?
  • Date of this example: unknown
  • Model no.: 10117
  • Weight: 318g
  • Maximum cog: 34 teeth (Simplex)
  • Total capacity: 40 teeth (Simplex)
  • Pulley centre to centre: 87mm
  • Index compatibility: 5 to 7 speed (Simplex)
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: sprung
  • P pivot: sprung
  • Materials: fully aluminium parallelogram and steel pulley cage plates
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