The BMW R75 is a World Battle II-era motorcycle and sidecar combination produced by the German company BMW.
In the 1930s BMW were creating a quantity of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a request from the German Military.
Preproduction models of the R75 were driven with a 750 cc side valve engine, which was predicated on the R71 engine. Nonetheless it was quickly found essential 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 subsequent 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 equipped with a locking differential and selectable highway and off-road products ratios through which all four and change gears worked. This made the R75 highly manoeuvrable and capable of negotiating most areas. 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 broadly 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 upon 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. They also agreed that the make 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, processing 20,000 each year.
Since the focus on of 20,200 BMW R75's was not reached, it remained in production until the Eisenach stock was so terribly broken by Allied bombing that production ceased in 1944. A further 98 units were assembled by the Soviets in 1946 as reparations.
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