The BMW R75 is a World Battle II-era motorcycle and sidecar blend made by the German company BMW.
Within the 1930s BMW were producing a quantity of popular and highly effective motorcycles. In 1938 development of the R75 were only available in response to a need from the German Army.
Preproduction types of the R75 were power by the 750 cc side valve engine, which was based on the R71 engine. However it was quickly found essential to design an all-new OHV 750 cc engine for the R75 product. This OHV engine motor later became the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was influenced with an axle linked to the trunk wheel of the motorcycle. These were installed with a locking differential and selectable highway and off-road gear ratios by which all four and reverse gears worked. 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 own competitor the Z?ndapp KS 750 were both widely employed by the Wehrmacht in Russia and North Africa, though after a period 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 making 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 arranged that the manufacture of the R75 would cease once production reached 20,200 systems, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 every year.
Since the goal of 20,200 BMW R75's had not been reached, it continued to be in production before Eisenach manufacturer was so badly ruined by Allied bombing that creation ceased in 1944. A further 98 models were constructed by the Soviets in 1946 as reparations.
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