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 Nimbus - 750 Military
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Photo ou archives : F-M. Dumas

Capacity : 750
Model : Military
Production : 1934 - 1960
Category : (R) Street Bike


750 Army - 1951

A rustic mount for the Danish Army

Surely unique in the long history of the motorcycle, the Danish firm Nimbus concentrated its entire production, from 1919 to 1960, on a single model: a 750cc in-line four-cylinder.

Combined Frame and Fuel Tank

Until 1934, the marque used an F-head engine nestled beneath a large-section tube that doubled as frame and fuel tank. The new Nimbus launched that year continued to the end of production 26 years later with only detail modifications. This time, the engine had a single overhead camshaft, though the valve springs were still exposed to the air. This unstressed yet unburstable power unit breathed through a single carburetor. The three-speed gearbox was bolted at the rear of an already long power unit.

A Novel Rear Light

The first version, remarkably ahead of its time, had swing-arm rear suspension. The second generation Nimbus, on the other hand, had a rigid frame – a curious double cradle set-up made from strip iron. A year before BMW, the Nimbus was the first production motorcycle fitted with a telescopic front fork of a recognizable pattern. It was principally intended for the public sector and the military version only differed in detail: a side stand, a toolbox at the rear, pannier bags and a blackout mask on the rear lamp identical to that used on the BMW Type Russia.


Engine: 746cc (60x66mm) air-cooled in-line four-cylinder four-stroke; two-bearing crank

Power Rating: 22 hp @ 4500 rpm

Valves: shaft-driven overhead camshaft

Fuel System: 38mm carburetor

Transmission: 3-speed; final drive by shaft; single-plate clutch

Suspension: telescopic fork (front); rigid (rear)

Brakes: drum (front and rear)

Wheels: wire

Weight: 419 lb

In a 26-year production run, Nimbus made 12,715 of this ohc rigid-frame model: 2096 were for the army.

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.