
The BMW R75 is a World War II-era motorcycle and sidecar combination made by the German company BMW.
Within the 1930s BMW were creating a quantity of popular and impressive motorcycles. In 1938 development of the R75 started in reaction to a request from the German Army.
Preproduction models of the R75 were run by a 750 cc area valve engine, which was predicated on the R71 engine. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 device. This OHV engine motor later became the basis for succeeding post-war twin BMW engines like the R51/3, R67 and R68.

The third side-car wheel was driven with an axle linked to the rear wheel of the motorcycle. These were equipped with a locking differential and selectable road and off-road equipment ratios by which all and change gears performed. 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 competitor the Z?ndapp KS 750 were both widely employed by the Wehrmacht in Russia and North Africa, though over time 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 upon 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. In addition they arranged that the manufacture 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, making 20,000 every year.
Since the concentrate on of 20,200 BMW R75's was not reached, it remained in production before Eisenach factory was so badly harmed by Allied bombing that development ceased in 1944. An additional 98 systems were constructed by the Soviets in 1946 as reparations.
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