This post is solely for documentation and will be updated continuously. It will hold pictures, measurements and bits of knowledge that I found on the way and would rather not forget.

Measurements on old French bicycles from the 70s (and before and after) can differ all over the bike from the standards that were around that time and today. You can find a lot of information on this in the infamous archives of Sheldon Brown. I will still put my (rather imprecise) measurements, if only confirmatory, on here.


  • Seat post: 24mm, shrinking down to 22mm at the top, where the seat rail clamp is put in place
  • Bar at stem clamping position: 24.6mm
  • Bar rest: 23.5mm outer, 22mm inner
  • rear dropouts/rear hub: 120mm
  • fork/front hub: 96 mm
  • steerer tube: 26mm
  • fork diameter: ~25mm, more likely 1” (25.4mm) [^1]
  • cottered spindle: 142mm
  • bottom bracket shell: 68mm wide
  • free wheel biggest diameter for diassembly tool: 31mm


  • Rigida Chrolux Chromage Superieur Rims (28 x 158 x 1 18 700c)
  • Normandy Hubs
  • Malliard 5-speed Hub [^2]
  • 52-40 chain set
  • Mafac Racer brakes
  • Simplex Prestige rear deraillieur

[^1] Often people are interested in upgrading to threadless forks, but 1” threadless forks are hard to come by. Just in case I’d ever be interested I googled that and found this fork (web archive . In general it appears on can rather easily get 1” threaded (on the British and American market), or 1 18” unthreaded.

[^2] This posed an interesting problem. The freewheel needs a rather unusual tool to be taken of - so unusual in fact, that Park Tool does not serve it. The outer diameter of the teeth ring is 31.2mm and it comes with 24 teeth. You can find a disassembly video here. I found two sellers, one on ebay shipping from Greece, and one shipping from Germany.