The BMW R75 is a World Conflict II-era motorcycle and sidecar mixture made by the German company BMW.
Within the 1930s BMW were producing a quantity of popular and impressive motorcycles. In 1938 development of the R75 started in reaction to a submission from the German Military.
Preproduction models of the R75 were powered by the 750 cc part valve engine, that was predicated on the R71 engine motor. However it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine motor later proved to be the basis for following post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was influenced with an axle linked to the trunk wheel of the motorcycle. These were fixed with a locking differential and selectable road and off-road products ratios by which all four and invert gears performed. This made the R75 highly manoeuvrable and with the capacity of negotiating most floors. 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 widely 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 after standardization of parts for both machines, with a view of eventually setting up a Z?ndapp-BMW hybrid (specified 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 reached 20,200 models, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, developing 20,000 each year.
Since the aim for of 20,200 BMW R75's was not reached, it continued to be in production before Eisenach factory was so terribly harmed by Allied bombing that development ceased in 1944. A further 98 units were constructed by the Soviets in 1946 as reparations.
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