The BMW R75 is a World Conflict II-era motorcycle and sidecar combination produced by the German company BMW.
Within the 1930s BMW were creating a quantity of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a need from the German Army.
Preproduction types of the R75 were driven with a 750 cc aspect valve engine, which was predicated on the R71 engine unit. However it was quickly found necessary to design an all-new OHV 750 cc engine unit for the R75 product. This OHV engine unit later became the foundation for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was motivated with an axle linked to the rear wheel of the motorcycle. These were built in with a locking differential and selectable road and off-road products ratios by which all and reverse gears worked well. This made the R75 highly manoeuvrable and capable of negotiating most areas. Additional 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 greatly utilized 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 upon standardization of parts for both machines, with a view of eventually making a Z?ndapp-BMW hybrid (designated the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also agreed that the produce of the R75 would stop 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 each year.
Since the goal of 20,200 BMW R75's was not reached, it remained in production before Eisenach manufacturer was so badly broken by Allied bombing that development ceased in 1944. A further 98 units were put together by the Soviets in 1946 as reparations.
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