Excel Dynamic SyncroMesh (1st style)

Excel Dynamic Syncromesh derailleur (1st style) main image

Not content to copy Huret’s designs (in this case the horrific Allvit), Excel decided to also copy Huret’s bizarre marketing ploy of decorating their derailleurs with gratuitous pieces of plastic. The Excel Dynamic gained a, very ‘modern’, clip-on piece of black plastic, a slightly longer high gear adjustment screw (to poke through the hole in the plastic) and the word ‘SyncroMesh’ which presumably refers to the sprung ‘cable-saver’ mechanism at the cable clamp.

I think this is an early version, with the same hanger plate as the Dynamic in this collection.

  • Derailleur brands: Excel
  • Country: USA
  • Date of introduction: 1975?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 307g including hanger plate
  • Maximum cog: 30 teeth?
  • Total capacity: 32 teeth?
  • Pulley centre to centre: 54mm
  • Index compatibility: friction
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: unsprung
  • P pivot: sprung
  • Materials: steel