Not content to copy Huret’s designs (in this case the horrific Allvit), Excel decided to also copy Huret’s bizarre marketing ploy of decorating their derailleurs with gratuitous pieces of plastic. The Excel Dynamic gained a, very ‘modern’, clip-on piece of black plastic, a slightly longer high gear adjustment screw (to poke through the hole in the plastic) and the word ‘SyncroMesh’ which presumably refers to the sprung ‘cable-saver’ mechanism at the cable clamp.

I think this is an early version, with the same hanger plate as the Dynamic in this collection.

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1. •Brand: Excel
   

2. •Country: USA
   

3. •Date of introduction: 1975?
   

4. •Date of this example: unknown
   

5. •Model no: unknown
   

6. •Weight: 307g including hanger plate
   

7. •Maximum cog: 30 teeth?
   

8. •Total capacity: 32 teeth?
   

9. •Pulley centre to centre: 54mm
   

10. •Index compatibility: friction
    

11. •Chain width: 3/32”
    

12. •Logic: top normal
    

13. •Pivots: two pivots, front sprung and rear unsprung
    

14. •Material: steel
    

0076/C