Home WORLD D-Rad R10 1931 496cc One Cylinder Ohv

D-Rad R10 1931 496cc One Cylinder Ohv


Roughly 3500 motorcycles has been produced in total from 1930-1931, only 100 bikes are known today. This bike is a fine running clockwork and is equipped with a SUM carburetor, Bosch lighting system, Bosch horn, Veigel speedo and a D-Rad 3-speed gearbox from its own production.

image: classic-motorcycle.com

Formerly a state-owned armaments manufacturer, Deutsche Werke AG diversified into the production of bedsteads, agricultural machinery and railway rolling stock after The Great War and around 1921 set up Deutsche Kraftfahrzeugwerke AG in Spandau to manufacture motorcycles under the ‘Star’ brand name.

Approximately 10,000 were made. Overhead-valve R10 and R11 models followed, selling in steadily decreasing numbers as the economic climate worsened.


Changing tack, the firm dropped its four-stroke models in 1931, replacing them with the 200cc R20 lightweight, which was powered by the German-made Bark two-stroke engine. In July 1932 Deutsche Industrie-Werke AG was taken over by NSU and production of D-Rad motorcycles ceased soon after.

  • Year: 1931
  • Displacement: 496 cc
  • Cylinder: 1
  • Engine type: 4-stroke / ohv
  • Bore / Stroke: 82 x 94 mm
  • Power: 20hp @ 4.800 rpm
  • Weight: 150 kg
  • Top Speed: 125 km/h
  • Production years: 1930 – 1931