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 Motosacoche France - 350 type 312 Grand Sport
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Motosacoche France type 312 Grand Sport motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives : F-M. Dumas

Capacity : 350
Model : type 312 Grand Sport
Production : 1936 -
Category : (R) Street Bike


350cc Type 312 Grand Sport - 1936

Swiss-made – in France

Motosacoche may have been one of the best-known Swiss marques, but the bike shown here was built in France. In 1922 the Swiss company established a factory in Lyon, cradle of the French motorcycle industry. The first French Motosacoche was the Type 2CR, an F-head 600cc V-Twin, which sold for less than the 500 single built in Geneva! And when President Poincaré devalued the French franc by 80 percent in 1928, the Swiss product became even more unaffordable. In order to hang on to its share of the French market, the Swiss marque stepped up production at the Lyon factory.

From Geneva to Lyon

Only the twin-port MAG engine of the Type 312 Motosacoche was imported from Switzerland; the rest of the machine was built in the Lyon factory or supplied by French accessory manufacturers, like the Magneto-France ignition, the Amac carburetor, and the Marchal headlamp.

A Dramatic History

This French Motosacoche also differs from the Swiss version in the design of its fuel tank and its Burman gearbox, used instead of Hurth or Sturmey-Archer transmissions. In any case, the 350 was less popular in Switzerland, where they preferred the 500 to cope with the mountain passes. Now looking as good as new, this Motosacoche was requisitioned by the FFI – the resistance fighters of the Maquis – during the war. Discovered in a state of advanced dereliction, many years later, it was then restored.


Engine: 347cc (72x85mm) MAG single-cylinder four-stroke; Magdyno France ignition/lighting

Power Rating: 14 hp @ 4800 rpm

Valves: overhead

Fuel System: Amac carburetor

Transmission: Burman 4 speed hand change; chain final drive

Suspension: girder forks (front); rigid (rear)

Brakes: offset 7.9 inch drums interlinked front/ rear

Wheels: 19 inch interchangeable

Maximum Speed: 75 mph

Though it was built in Lyon, this Motosacoche is painted in the colors of the city of Geneva – khaki and garnet red.

Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.