The BMW R75 is a global Battle II-era motorcycle and sidecar combination produced by the German company BMW.
Inside the 1930s BMW were producing a number of popular and highly effective motorcycles. In 1938 development of the R75 started in respond to a request from the German Military.
Preproduction types of the R75 were power by a 750 cc aspect valve engine, which was predicated on the R71 engine. However it was quickly found necessary to design an all-new OHV 750 cc engine unit for the R75 unit. This OHV engine later became the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was driven with an axle connected to the rear wheel of the motorcycle. They were equipped with a locking differential and selectable road and off-road products ratios through which all and reverse gears proved helpful. This made the R75 highly manoeuvrable and capable of negotiating most surfaces. A few other 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 greatly utilized 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 after standardization of parts for both machines, with a view of eventually building a Z?ndapp-BMW hybrid (chosen the BW 43), when a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they arranged that the manufacture of the R75 would stop once production come to 20,200 units, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, manufacturing 20,000 every year.
Since the focus on of 20,200 BMW R75's was not reached, it continued to be in production until the Eisenach stock was so terribly destroyed by Allied bombing that development ceased in 1944. A further 98 systems were set up by the Soviets in 1946 as reparations.
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