BMW R75/7

The BMW R75 is a global War II-era motorcycle and sidecar combination produced by the German company BMW.

Inside 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 Military.

Preproduction types of the R75 were driven by a 750 cc part valve engine, which was predicated on the R71 engine unit. However it was quickly found essential to design an all-new OHV 750 cc engine unit for the R75 unit. This OHV engine motor later became the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.

The 3rd side-car wheel was influenced with an axle connected to the trunk wheel of the motorcycle. These were built in with a locking differential and selectable road and off-road gear ratios by which all four and invert gears functioned. This made the R75 highly manoeuvrable and with the capacity of negotiating most areas. 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 after a period of evaluation 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 making a Z?ndapp-BMW hybrid (chosen the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. They also decided that the produce of the R75 would cease once production reached 20,200 systems, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, making 20,000 each year.

Since the goal of 20,200 BMW R75's had not been reached, it remained in production until the Eisenach manufacturing plant was so terribly destroyed by Allied bombing that production ceased in 1944. A further 98 systems were constructed by the Soviets in 1946 as reparations.

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