Yet again Paul de Vivie makes the case for many and wide ratio gears. He appears to claim that, by reducing the peak effort required and the level of exhaustion, gears protect you from hypertrophy of the heart and anemia of the brain. It’s enough to make you dig out your old Biopace chainrings... or maybe not.

(Source gallica.bnf.fr/ Bibliothèque nationale de France)

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• Publisher: T.C.F. Revue Mensuelle
• Country: France
• Date: September 1907
• Derailleur brands: de Vivie
• Derailleurs: none