BMW R75 wiring

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

Within the 1930s BMW were producing a variety of popular and impressive motorcycles. In 1938 development of the R75 started in response to a submission from the German Military.

Preproduction models of the R75 were powered by a 750 cc area valve engine, that was based on the R71 engine motor. However it was quickly found necessary to design an all-new OHV 750 cc engine motor for the R75 unit. This OHV engine unit 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 powered with an axle connected to the trunk wheel of the motorcycle. We were holding built in with a locking differential and selectable road and off-road products ratios by which all four and reverse gears did the trick. This made the R75 highly manoeuvrable and capable of negotiating most surfaces. 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 generally utilized 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 after standardization of parts for both machines, with a view of eventually creating a Z?ndapp-BMW hybrid (designated the BW 43), in which a BMW 286/1 side-car would be grafted onto a Z?ndapp KS 750 motorcycle. In addition they arranged that the production of the R75 would stop once production come to 20,200 models, and after that point BMW and Z?ndapp would only produce the Z?ndapp-BMW machine, processing 20,000 every year.

Since the goal of 20,200 BMW R75's had not been reached, it remained in production until the Eisenach manufacturer was so badly broken by Allied bombing that production ceased in 1944. A further 98 products were built by the Soviets in 1946 as reparations.

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