The BMW R75 is a World Conflict II-era motorcycle and sidecar blend produced by the German company BMW.
In the 1930s BMW were creating a volume of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a submission from the German Military.
Preproduction types of the R75 were run by the 750 cc part valve engine, that was based on the R71 engine. However it was quickly found necessary to design an all-new OHV 750 cc engine unit for the R75 device. This OHV engine later proved to be the basis for succeeding post-war twin BMW engines like the R51/3, R67 and R68.
The 3rd side-car wheel was motivated with an axle connected to the trunk wheel of the motorcycle. They were fitted with a locking differential and selectable road and off-road gear ratios through which all four and change gears performed. 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 rival 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 Army, agreed upon standardization of parts for both machines, with a view of eventually setting up a Z?ndapp-BMW hybrid (selected the BW 43), when a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they agreed that the make of the R75 would cease once production come to 20,200 products, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 every year.
Since the target of 20,200 BMW R75's had not been reached, it continued to be in production until the Eisenach stock was so terribly destroyed by Allied bombing that production ceased in 1944. An additional 98 models were constructed by the Soviets in 1946 as reparations.
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