The BMW R75 is a World Warfare II-era motorcycle and sidecar mixture made by the German company BMW.
Within the 1930s BMW were creating a variety of popular and impressive motorcycles. In 1938 development of the R75 were only available in response to a demand from the German Military.
Preproduction models of the R75 were run by a 750 cc part valve engine, which was based on the R71 engine. Nonetheless it was quickly found necessary 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 third side-car wheel was influenced with an axle connected to the trunk wheel of the motorcycle. These were fitted with a locking differential and selectable road and off-road equipment ratios through which all and reverse gears proved helpful. This made the R75 highly manoeuvrable and with the capacity 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 rival the Z?ndapp KS 750 were both greatly used 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 Army, agreed after standardization of parts for both machines, with a view of eventually developing 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 reached 20,200 units, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 every year.
Since the aim for of 20,200 BMW R75's had not been reached, it continued to be in production until the Eisenach manufacturer was so terribly ruined by Allied bombing that creation ceased in 1944. An additional 98 items were assembled by the Soviets in 1946 as reparations.
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BMW R75 Motorcycle in the Military Vehicle Technology Foundation
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