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 Scott - 750 Triple prototype
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Photo ou archives : M. Woollett

Capacity : 750
Model : Triple prototype
Production : 1933 - 1933
Category : (R) Street Bike


750 Three-Cylinder - 1933

Far ahead of its time

The Scott factory was famed for its very modem water-cooled, two-stroke twins, which won the Senior (500cc) TT in 1912 and 1913. Based near Shipley in Yorkshire, Scott produced a number of flagship sports models during the 1920s, including the 500 Squirrel and 600 Super Squirrel and, in the same displacements, the sports Flying Squirrel models.

Seeking New Markets

In an attempt to conquer new markets, the Yorkshire company unveiled an exciting new 750cc three-cylinder grand tourer that was intended to complete the range of sports and touring twins.

Magnesium Crankcase

Designed by William Cull (the founder of the marque, Alfred Angus Scott, had died of pneumonia at age 48 in 1923) the new 750 had ultra-light magnesium crankcase castings, and in a quest for perfect balance, the firing interval was 120 degrees. The connecting rods were made of aluminum and the pistons were the normal deflector-top Scott pattern, so the engine was very much in the marque tradition. This three-cylinder power unit was mounted in a double-cradle frame, and the transmission consisted of a three-speed gearbox bolted to the rear of the engine with chain final drive. The coil ignition used a six-cylinder distributor to meet the needs of a two-stroke three-cylinder engine, while fuel supply was by a single carburetor mounted on the left-hand side. Scott built a second prototype that was identical, apart from its 1000cc capacity. It was displayed at the 1934 London Show, but only a dozen examples were ever built.


Engine: 747cc water-cooled three-cylinder; deflector-top pistons

Power Rating: 36 hp @ 5000 rpm

Valves: two-stroke

Fuel System: carburetor

Transmission: 3-speed, automobile-type clutch; chain final drive

Suspension: Brampton leading-link forks with central damper (front); rigid (rear)

Brakes: drum (front & rear)

Wheels: 3.50x21 inch (front & rear)

Weight: 425 lb

Maximum Speed: 90 mph

Scott built three prototypes of us 750cc three-cylinder two-stroke in 1933, and a small number with the engines uprated to 1000cc were sold in 1934.

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.