The BMW R75 is a World Battle II-era motorcycle and sidecar combo made by the German company BMW.
Inside the 1930s BMW were producing a range of popular and impressive motorcycles. In 1938 development of the R75 started in response to a demand from the German Army.
Preproduction models of the R75 were powered by way of a 750 cc side valve engine, which was based on the R71 engine unit. Nonetheless it was quickly found essential to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine unit later proved to be the foundation for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was powered with an axle connected to the trunk wheel of the motorcycle. They were fitted with a locking differential and selectable street and off-road gear ratios through which all four and invert gears proved helpful. This made the R75 highly manoeuvrable and capable of negotiating most surfaces. Additional 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 generally employed 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 upon standardization of parts for both machines, with a view of eventually setting up a Z?ndapp-BMW hybrid (chosen 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 after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 each year.
Since the aim for of 20,200 BMW R75's was not reached, it remained in production until the Eisenach manufacturer was so badly damaged by Allied bombing that development ceased in 1944. A further 98 units were set up by the Soviets in 1946 as reparations.
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