French

Sheldon Brown's Bicycle Glossary · letter E-F
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Older French bicycles were made to different dimensional standards than most modern bicycles. Areas of difference include:

• headset (25 x 1 mm)
• bottom-bracket (35 x 1mm, right-hand thread on both sides--see Swiss)
• pedal (14 x 1.25 mm)
• rear hub/freewheel (34.7 x 1 mm threading)
• handlebar (25 mm)
• stem (22mm) diameter
• frame tubing diameters:
  • Top tube (26 mm)
  • Down tube (28 mm)
  • Seat tube (28 mm)
  • Head tube (32mm)
• cotter diameter (9 mm)

Attempting to thread together French and non-French parts can result in damage. The letter "D" means "right" (Droite); "G" means "left" (Gauche). French-threaded pedals often can be identified because they carry the markings "D" and "G".

Newer French bicycles are built to Italian or I.S.O. standards For more details on this topic, see my article on French Bicycles.

Copyright © 1996, 2008 Sheldon Brown

Original: https://www.sheldonbrown.com/gloss_e-f.html#french · Reproduced on en.wikipedalia.com with permission, all rights reserved.