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 Jawa - 100 Robot
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Photo ou archives : F-M. Dumas

Capacity : 100
Model : Robot
Production : 1937 - 1946
Category : (R) Street Bike


100 Robot ·1937

Following the DKW fashion

This popular copy of the DKW RT 100 was created in 1937 by the famous British engineer George William Patchett, who had been hired in 1930 by the founder of the Jawa works, Frantisek Janecek. Having begun making arms, Janecek had diversified into motorcycles in 1929 by acquiring the license to build the Wanderer 500 shaft-driven single plus all the manufacturing tools. But the Wanderer was big, heavy - and unsuccessful.

Successful lightweight

Patchett launched a light, economical bike as soon as he arrived at Jawa, to ensure that the works was operating at a profit. This was the Villiers-powered Jawa 175cc, which sold very well and allowed Jawa to begin production of a bigger four-stroke, a side-valve 350, quickly followed by an overhead-valve version.

Enlarged Range

Jawa also took part in competition, especially in the sand-track races on hard dirt circuits that were popular in Czechoslovakia, where the Jawa 350 riders F. Juhan and the German G.H. Gunzenhauser were particularly successful. In 1936, Jawa replaced its 175's Villiers engine with an own-make power unit, a modern 250 two-stroke inspired by the best-seller in the class- the 250 DKW. It had a Schnurle loopscavenging system, which developed 9 hp. The next step in the enlargement of the range, still in DKW's image, was this very popular 100cc Robot fitted with pedals, though in practice these were hardly necessary since it only weighed 108 lb and its 2.7 hp engine driving through a three-speed transmission gave it a top speed of just over 40 mph.


Engine: 99cc air -cooled single-cylinder

Power Rating: 2.7 hp @ 3750 rpm

Valves: two-stroke, lateral transfer ports controlled by piston skirt

Fuel System: carburetor

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

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

Brakes: drum (front & rear)

Wheels: 2.75xl9 inch (front & rear)

Weight: 108 lb

Maximum Speed: 40 mph


Tbe Robot was a highly popular machine that thepost-1938 political situation prevented from beingexported in any quantity.

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.