The rather individually styled Chaluret 93 is one of several dozen different models from different brands that claimed to be the only derailleur in the whole wide world that could automatically regulate the chain tension.

In other news... it allows a total difference of 12 teeth, can be used with 3 or 4 speed freewheels, is useful for racing, touring and ‘routier’ (which I always thought of as ‘trucking’), is easy to fit and quick to adjust and is suitable for both men’s and women’s bikes.

Would you like a bag with that?

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• Publisher: Chaluret
• Country: France
• Date: 1950?
• Derailleur brands: Chaluret, Spirax
• Derailleurs: Chaluret 93