This, rather interesting, derailleur is a Falcon copy of a mid-1980s Shimano Light Action SGS model. I have guessed that it dates from around 1990. The Shimano originals were exceptionally fine, mid-range, derailleurs that were tough, reliable and smooth to operate. I guess that this lowly Falcon facsimile might well have many of the same virtues.

• Derailleur brands: Falcon
• Country: Taiwan
• Date of introduction: 1990?
• Date of this example: unknown
• Model no.: unknown
• Weight: 302g
• Maximum cog: 34 teeth? (from equivalent Shimano model)
• Total capacity: 40 teeth? (from equivalent Shimano model)
• Pulley centre to centre: 86mm
• Index compatibility: 6/7-speed ?
• Chain width: 3/32”
• Logic: top normal
• B pivot: sprung
• P pivot: sprung
• Materials: aluminium knuckles, the rest is steel

Ref. 2100