Huret Dural Competition

Huret Dural Competition derailleur main image

This Huret derailleur is often referred to as the Huret Aluvac as it has the word ‘Aluvac’ cast into the back of the main arm. The real name, with which André Huret blessed it, is the Huret Dural Competition. I suspect that Aluvac refers to some kind of vacuum casting of aluminium used in its manufacture.

Despite being manufactured in wartime France, it is a handsome item with spectacular build quality. It is light, it feels reassuringly strong, the castings are precise, the nuts and bolts are beautifully machined, the movement is smooth and free of play and even the paint seems to be inclined to stay attached to the metal. Would it be inappropriate to suggest that it feels more German than French?

The Huret Dural Competition is a simple direct pull device, with the outer cable stop just below the bottom end of the spring and the cable clamp bolt on the pulley cage plate. It is also a single pulley design with all that implies in terms of total uselessness. However in addition to the build quality it has a certain style and cleverness. I particularly like the swooping curves and the spring tension adjuster.

  • Derailleur brands: Huret
  • Categories: Huret - before 1950
  • Country: France
  • Date of introduction: 1942
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 205g including hanger plate
  • Maximum cog: 26 teeth? (see the gear chart on the instructions)
  • Total capacity: 20 teeth? (again - see the gear chart on the instructions)
  • Pulley centre to centre: not applicable
  • Index compatibility: friction
  • Chain width: 1/8”
  • Logic: low normal
  • B pivot: sprung
  • P pivot: none
  • Materials: aluminium, including the hanger plate
Huret Dural Competition derailleur additional image 01