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 MGC - 250 N 3 BR course
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Photo ou archives : F-M. Dumas
6606

Capacity : 250
Model : N 3 BR course
Production : 1932 - 1932
Category : (R) Racing

MGC

250 N3BR · 1932

Marcel Guiguet's personal motorcycle

In terms of the quantity of motorcycles produced - around 300 machines – MGC was a small marque. But its achievements brought it renown, not only in France but also abroad, where several of its motorcycles were bought by enlightened amateurs.

Flying Storks

The most prestigious MGC was the personal 3BR of marque founder Marcel Guiguet. In 1928, Marcel Guiguet built his first model, with a fuel tank, cast in light-alloy, that formed the upper frame member. He named his marque MGC ("Marcel Guiguet and Co.") and gave it the flying stork badge that had been carried on the SPAD biplanes of the legendary "Escadrille des Cigognes," in which GuiguetÂ’s brother had served during WWl.

Masterpiece of Design

The idiosyncratic styling of the first version and its fragility held back sales, so in 1930, Guiguet went back to the drawing board to produce a new fuel tank frame member. Still considered today as an aesthetic and technical masterpiece. This structural fuel tank was linked (except on some models with a Chaise unit-construction engine) by machined stays to a lower "chassis" that acted as an oil tank and carried the engine and gearbox. The entire structure, though not light, was very rigid. The marque's archives, which were salvaged by a local enthusiast, revealed that Guiguet only built two 250cc  3BR and kept one for himself, riding it to victory in the Circuit of Dauphine in 1931. Its superb handling allowed him to establish an average lap speed of over 60 mph - in pouring rain!

SPECIFICATIONS

Engine: 245cc (63x80mm) air-cooled single· cylinder JAP racing-type POR 8 four-stroke

Power Rating: 22 hp @ 6000 rpm

Valves: overhead, with pushrods and roller tappets

Fuel System: twin-float chamber Amal Racing carburetor

Transmission: Sturmey-Archer 4-speed footshift, dry single-plate clutch; chain final drive

Frame: Upper and lower parts in cast aluminium, linked with 7 bolted steel beams.

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

Brakes: drum (front & rear)

Wheels: 21 inch (front & rear)

Weight: 298 lb

Maximum Speed: 84 mph

 

The aesthetics alone of the MGC would make it an all-time classic motorcycle, but its technical details were exceptional, too.

 




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.