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 Brough Superior - 750 Mk II
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Brough Superior Mk II motocyclette motorrad motorcycle vintage classic classique scooter roller moto scooter
Photo ou archives : F-M. Dumas
3607

Capacity : 750
Model : Mk II
Production : 1920 -
Category : (R) Street Bike

BROUGH SUPERIOR

750 Mk II -1920

British superiority, Swiss heart

Founded in 1919, Brough Superior launched its second model in 1921. The firm was not committed to using JAP V-twins exclusively, though during its long collaboration with George Brough, the Tottenham company always provided him with "special" engines.

A Swiss Long-Stroke

In order to make the Brough truly "superior" to other marques that assembled proprietary engines, transmissions and other components, George Brough always required his suppliers to make improvements (which he very often devised himself). For the 750 Mk II, he chose the Geneva-built MAG, a highly regarded power unit of the day. It was a longstroke V-twin with overhead intake and side exhaust valves, a legacy of the days when intake valves were automatically operated by the suction of the piston.

Unsurpassed Finish

The "Brough Special" MAG was fitted with a single Amac carburetor and developed 13.6 hp at 3280 rpm. The Sturmey-Archer three-speed gearbox (another Brough exclusive) incorporated a transmission shock absorber. The finish of the Brough Superior was unsurpassed: Four coats of enamel were applied over a rubber-based anti-rust finish, all the light-alloy components were polished with buffalo hide and the cylinders were nickel-plated. The Brough was an esthetic masterpiece, with dual exhausts combining in a cast-aluminum muffler ahead of the crankcase – and tremendously advanced for 1920 – the streamlined plated saddle tank that would characterize Brough Superiors over the years.

SPECIFICATIONS

Engine: 748cc (72x90mm) MAG type 2C14 air-cooled V-twin four-stroke

Power Rating: 13.6 hp @ 3280 rpm

Valves: F-head

Fuel System: Amac carburetor

Transmission: 3-speed Sturmey-Archer, hand-shift, chain final drive

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

Brakes: drum (front); dummy belt rim (rear)

Wheels: 650x65mm clincher (front & rear)

Maximum Speed: 80 mph

In terms of finish and refinement, the Brough truly was superior; even the Lycett saddle was a special order. This Mk II 750 has dual foot rests, for touring or speed work.




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.