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 Norton - Model 40 Inter
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Norton D2-492-35-12
Photo ou archives : F-M. Dumas

Capacity : 500
Model : Model 40 Inter
Production : 1953 - 1958
Category : (R) Street Bike


350cc Model40 International -1956

Last of a long line

To the British motorcycle enthusiast, the "Cammy" Norton is, in its maker's proud slogan, "unapproachable." Created in 1927 as the CSl (Cam Shaft One) by Walter Moore who later designed a similar engine for NSU - and redesigned a few years later by Arthur Carroll, the overhead-camshaft Norton single was refined into its ultimate form by development engineer ]oe Craig. The original 79x100mm SOOcc was joined in 1928 by a 79x88mm 350.

From Garden Gate to Featherbed

The "International" name appeared in 1932 on road-going versions of the works 350 and 500 racers, and in 1939, the International wasgiven a production version of the "Garden gate" frame with plunger rear suspension. Telescopic forks replaced girders in 1948, but the "Inter" was beginnino to look a little longthough it was still a force to be reckoned with in clubman racing. In 1953, it was rejuvenated with the adoption of the celebrated "Featherbed" duplex-loop frame developed by the McCandless brothers of Belfast.

To Special Order Only

Despite this fundamental redesign, the International was no longer the prized over- the-counter club man racer it had been. It had become a fast tourer that was difficult to tell apart from the marque's other models. Indeed, it was no longer featured in the general catalogue, but in the restricted circulation documents relating to the Manx road-racer. By 1958, the Inter was only available by special order and a few months later, it was gone forever.


Engine: 348cc (71x88mm) air-cooled singlecylinder four-stroke

Power Rating: 25 hp @ 6000 rpm

Valves: overhead-camshaft

Fuel System: carburetor

Transmission: 4-speecl, chain final drive

Suspension: telescopic forks (front); swing arm (rear)

Brakes: drum (front & rear)

Wheels: 3.00x19 inch (front); 3.50x19 inch (rear)

Weight: 366 lb


Very similar ·in appearance to the contemporary Dominator 88 and 99 ·models, the final Norton Jntemationals had light-alloy, full-hub brakes.

Motorcycle encyclopedia Moto Passion, realised by François-Marie Dumas, include almost 2000 photos presented with an exhaustive history of the motorcycles exhibited.

This unique collection has been realised with the participation of many specialists. With many thanks in particular to Yves Campion, Michael Dregni, Didier Ganneau, Jean Goyard, Helmut Krackowizer, Michel Montange, Christian Rey, Bernard Salvat, Mick Woollett, etc

One can order here

  • Original cards on paper (in french)
  • High resolution scans or original documents presented and signed with my name.

Please contact me at for conditions and copyright.

© Tous droits réservés
François-Marie Dumas

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