The BMW R75 is a World Battle II-era motorcycle and sidecar combo produced by the German company BMW.
Inside the 1930s BMW were creating a number of popular and highly effective motorcycles. In 1938 development of the R75 started in respond to a request from the German Army.
Preproduction models of the R75 were driven with a 750 cc part valve engine, that was predicated on the R71 engine. However it was quickly found essential to design an all-new OHV 750 cc engine for the R75 unit. This OHV engine unit later became the basis for succeeding 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 installed with a locking differential and selectable street and off-road products ratios by which all four and invert gears performed. 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 broadly used 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 building 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. In addition they decided that the production of the R75 would stop once production come to 20,200 items, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 each year.
Since the target of 20,200 BMW R75's had not been reached, it remained in production until the Eisenach stock was so terribly damaged by Allied bombing that development ceased in 1944. A further 98 models were set up by the Soviets in 1946 as reparations.
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