The BMW R75 is a global Battle II-era motorcycle and sidecar combination made by the German company BMW.
Within the 1930s BMW were creating a volume of popular and impressive motorcycles. In 1938 development of the R75 were only available in response to a need from the German Military.
Preproduction models of the R75 were driven with a 750 cc aspect valve engine, which was based on the R71 engine unit. Nonetheless it was quickly found essential to design an all-new OHV 750 cc engine unit for the R75 product. This OHV engine motor later became the basis for following post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was powered with an axle connected to the trunk wheel of the motorcycle. They were installed with a locking differential and selectable street and off-road gear ratios by which all and invert gears worked well. This made the R75 highly manoeuvrable and capable of negotiating most floors. 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 broadly 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 (chosen the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they decided that the production of the R75 would stop once production reached 20,200 items, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 every year.
Since the concentrate on of 20,200 BMW R75's had not been reached, it continued to be in production before Eisenach stock was so terribly damaged by Allied bombing that development ceased in 1944. A further 98 devices were assembled by the Soviets in 1946 as reparations.
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