101 OSB

1950 NSU 101 OSB Technical Analysis & Specification Breakdown

Engineered by NSU for the sport motorcycle segment, the 1950 NSU 101 OSB utilizes a 98 cc (6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 5.8 HP (4.2 kW) at 6,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 59.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the 101 OSB measures 85 kg (187 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (14.66 kg per horsepower). The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 85 km/h (53 mph).

Within MotoLibrary's NSU archive, this model family spans 6 indexed model years from 1949 to 1954, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.