This is a derivative of a Sachs New Success (or perhaps a Sachs Quartz?) branded as Stronglight.

As the French bicycle component industry fell apart in the 1990’s both the Stronglight brand and the old Sachs (and before that Huret) factory ended up owned by the same company - called IRCOS. I think this derailleur is one of the results of this benighted coming together.

None of this is terribly exciting - but what is exciting is the fantastically French colour scheme. Yes, the blue does glow like that, and yes, those red pulley wheels are original. You can’t look at it without thinking that le jour de gloire est arrivée.

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1. •Brand: Stronglight,
   

2. •Country: France,
   

3. •Date of introduction: 1997?
   

4. •Date of this example: unknown
   

5. •Model no: unknown
   

6. •Weight: 241g excluding a small piece that has broken off the inner pulley cage plate
   

7. •Maximum cog: 32 teeth
   

8. •Total capacity: 34 teeth
   

9. •Pulley centre to centre: 70mm
   

10. •Index compatibility: 8 speed
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

13. •Pivots: two sprung pivots
    

14. •Material: aluminium with titanium cable clamp bolts and pulley bolts
    

15. •My theme: A riot of colour
    

0297/J