R3

1936 BMW R3 Technical Analysis & Specification Breakdown

Engineered by BMW for the allround motorcycle segment, the 1936 BMW R3 relies on a 305 cc (18.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 11 HP (8 kW) at 4,200 rpm, transferring power to the rear wheel through shaft drive (cardan) final drive. With a specific output of 36.1 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 R3 measures 149 kg (328 lbs) wet (curb), translating to a power-to-weight ratio of 0.07 HP/kg (13.55 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,320 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 12-liter (3.2 US gal) fuel tank paired with a rated consumption of 3 L/100 km provides an estimated theoretical range of roughly 400 km (249 miles) between fill-ups, while factory top speed is listed at 100 km/h (62 mph).