The BMW R75 is a global War II-era motorcycle and sidecar blend made by the German company BMW.
Within the 1930s BMW were producing a range of popular and highly effective motorcycles. In 1938 development of the R75 started in reaction to a demand from the German Military.
Preproduction models of the R75 were power by way of a 750 cc area valve engine, which was based on the R71 engine unit. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine unit for the R75 device. This OHV engine unit later became the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.
The third side-car wheel was powered with an axle connected to the trunk wheel of the motorcycle. They were equipped with a locking differential and selectable road and off-road equipment ratios through which all and invert gears functioned. This made the R75 highly manoeuvrable and with the capacity of negotiating most surfaces. A few other 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 widely 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 Military, agreed after standardization of parts for both machines, with a view of eventually setting up a Z?ndapp-BMW hybrid (designated the BW 43), when a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also arranged that the make of the R75 would stop once production reached 20,200 products, and from then on point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, manufacturing 20,000 every year.
Since the target of 20,200 BMW R75's was not reached, it remained in production before Eisenach factory was so badly destroyed by Allied bombing that production ceased in 1944. An additional 98 units were built by the Soviets in 1946 as reparations.
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