Sexy Teen: BMW Motorcycle Design

The BMW R75 is a World Warfare II-era motorcycle and sidecar combination made by the German company BMW.

In the 1930s BMW were producing a quantity of popular and highly effective motorcycles. In 1938 development of the R75 were only available in reaction to a submission from the German Military.

Preproduction models of the R75 were run by a 750 cc aspect valve engine, which was based on the R71 engine. Nonetheless it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 device. This OHV engine unit 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. We were holding fixed with a locking differential and selectable street and off-road gear ratios by which all four and reverse gears worked. 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 competitor the Z?ndapp KS 750 were both greatly used by the Wehrmacht in Russia and North Africa, though after a period 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 making a Z?ndapp-BMW hybrid (specified 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 make of the R75 would cease once production reached 20,200 items, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 every year.

Since the focus on of 20,200 BMW R75's was not reached, it remained in production before Eisenach manufacturing plant was so terribly destroyed by Allied bombing that production ceased in 1944. An additional 98 items were put together by the Soviets in 1946 as reparations.

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