The BMW R75 is a global Warfare II-era motorcycle and sidecar blend produced by the German company BMW.
In the 1930s BMW were creating a volume of popular and impressive motorcycles. In 1938 development of the R75 started in response to a question from the German Army.
Preproduction types of the R75 were driven by the 750 cc side 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 device. This OHV engine later proved to be the foundation 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 items ratios by which all and reverse gears proved helpful. This made the R75 highly manoeuvrable and with the capacity of negotiating most areas. Additional motorcycle manufactures, like FN and Norton, provided an optional drive to sidecars.
The BMW R75 and its rival the Z?ndapp KS 750 were both extensively employed 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 Army, agreed upon standardization of parts for both machines, with a view of eventually developing 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. In addition they arranged that the produce 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, manufacturing 20,000 each year.
Since the goal of 20,200 BMW R75's was not reached, it remained in production before Eisenach stock was so badly damaged by Allied bombing that development ceased in 1944. A further 98 products were constructed by the Soviets in 1946 as reparations.
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