BMW S1000RR Tops 224 mph at Bonneville Motorcycle USA

The BMW R75 is a World War II-era motorcycle and sidecar blend made by the German company BMW.

In the 1930s BMW were creating a quantity of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a request from the German Army.

Preproduction types of the R75 were driven with a 750 cc aspect valve engine, that was based on the R71 engine motor. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine unit for the R75 product. This OHV engine unit later became the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.

The 3rd side-car wheel was driven with an axle linked to the trunk wheel of the motorcycle. These were equipped with a locking differential and selectable road and off-road products ratios through which all and change gears performed. This made the R75 highly manoeuvrable and capable of negotiating most surfaces. A few other motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.

The BMW R75 and its rival the Z?ndapp KS 750 were both widely employed by the Wehrmacht in Russia and North Africa, though after a period of analysis it became clear that the Z?ndapp was the superior machine. In August 1942 Z?ndapp and BMW, on the urging of the Military, agreed after standardization of parts for both machines, with a view of eventually setting up a Z?ndapp-BMW hybrid (selected the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also agreed that the production of the R75 would stop once production come to 20,200 devices, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 each year.

Since the focus on of 20,200 BMW R75's had not been reached, it continued to be in production until the Eisenach factory was so badly ruined by Allied bombing that development ceased in 1944. A further 98 units were assembled by the Soviets in 1946 as reparations.

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