The BMW R75 is a World Conflict II-era motorcycle and sidecar blend made by the German company BMW.
Within the 1930s BMW were creating a number of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a question from the German Army.
Preproduction types of the R75 were powered by the 750 cc side valve engine, which was based on the R71 engine. Nonetheless it was quickly found essential to design an all-new OHV 750 cc engine for the R75 device. This OHV engine motor later proved to be the basis for following 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. They were installed with a locking differential and selectable road and off-road products ratios by which all four and invert gears did the trick. This made the R75 highly manoeuvrable and with the capacity of negotiating most areas. A few other motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its own rival the Z?ndapp KS 750 were both greatly used by the Wehrmacht in Russia and North Africa, though over time of evaluation it became clear that the Z?ndapp was the superior machine. In August 1942 Z?ndapp and BMW, on the urging of the Army, agreed after standardization of parts for both machines, with a view of eventually creating a Z?ndapp-BMW hybrid (selected the BW 43), when 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 come to 20,200 systems, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, developing 20,000 each year.
Since the aim for of 20,200 BMW R75's had not been reached, it continued to be in production before Eisenach manufacturer was so badly broken by Allied bombing that development ceased in 1944. An additional 98 items were put together by the Soviets in 1946 as reparations.
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