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 CP Roleo - 350 C 6 B
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CP Roleo C 6 B  motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives : F-M. Dumas

Capacity : 350
Model : C 6 B
Production : 1928 - 1929
Category : (R) Street Bike


350 Staub Type M3 - 1929

Keeping up with the trends

CP Roléo may not have been the best-known or best-selling French marque but it epitomized the popular trends of its clay – the unit-construction of engine and gearbox and the pressed-steel frame. The firm, based in the Rue de Ia Folie Mericourt, Paris (and still in business today!), had been founded in 1897 by Leon Rollet, whose son diversified into motorcycle manufacture in 1927. He used various engines, all French, including overhead-valve LMP singles, Harissard two-stroke twins and the magnificent unit-construction Staub.

Deltabox Frame 1920s Style

The CP Roléos were remarkable for their frame construction: "in pressed steel with integral triangulation”, claimed the firm's publicity. It foreshadowed what the Japanese marques nowadays commonly call a "Deltabox" frame, a 0.1 inch sheet-steel box-girder incorporating the fuel tank and linking the steering head and the rear-wheel spindle.

Built under JAP License

The unit-constructed Staub engine fitted to this CP Roléo was very compact. The top end of its engine was built under license from the English JAP company, and copied the bore and stroke dimensions of the 350 JAP. The duplicated pressure lubrication circuits, enclosed valves, twin exhausts and a gearbox could be dismantled without removing the engine/gearbox unit from the frame. An unorthodox feature was the "back-to-front" gear quadrant, while the advance and retard was controlled by a left-hand twist-grip, similar to the control of American bikes.


Engine: 350cc (70x90mm) Staub singlcylinder four-stroke

Valves: overhead

Fuel System: carburetor

Transmission: 3-speed hand change; final drive by chain

Suspension: Druid girder fork (front); rigid (rear)

Brakes: 190mm drum (front & rear)

Wheels: 19 inch (front & rear)

In 1928 a CP Roléo won the 350cc class in the Bol d'Oro endurance race on the St-Germaine-en-Laye circuit, covering 898.5 miles in 24 hours.

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.