Union derailleur main image

I think this Union pull-chain design, a very competent copy of a Huret from the 1950s, is the earliest of the Czech derailleurs in this collection. It is clearly a close relative of the Favorit (1st style), but the black finish on the small parts smacks of immediate post-war shortages of fripperies like chrome for plating. Despite (because of?) this, it is a solid, well constructed, item and the small parts are accurately machined.

Strangely the branding is upside down - unlike the later Favorit version.

  • Derailleur brands: Union
  • Country: Czech Republic - Czechoslovakia at the time
  • Date of introduction: 1952?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 238g including integrated hanger plate
  • Maximum cog: 24 teeth?
  • Total capacity: 22 teeth?
  • Pulley centre to centre: 46mm
  • Index compatibility: friction
  • Chain width: 1/8”?
  • Logic: low normal
  • B pivot: none
  • P pivot: sprung
  • Materials: steel
Union derailleur additional image 01