The BMW R75 is a World War II-era motorcycle and sidecar combination produced by the German company BMW. In the 1930s BMW were producing a number of popular and highly effective motorcycles. In 1938 development of the R75 started in response to a request from the German Army. Preproduction models of the R75 were powered by a 750 cc side valve engine, which was based on the R71 engine.
source.image: classic-motorcycle.com
- Displacement: 745 cc
- Cylinder: 2 – transverse
- Engine type: 4-stroke / ohv
- Bore / Stroke: 78 x 78 mm
- Power: 26hp @ 4000 rpm
- Compression Ratio: 1 : 5.8
- Weight: 400 kg
- Top Speed: 95 km/h
- Production years: 1941 – 1944
- Units: 16510
However it was quickly found necessary to design an all-new OHV 750 cc engine for the R75 unit. This OHV engine later proved to be the basis for subsequent post-war twin BMW engines like the R51/3, R67 and R68.The third side-car wheel was driven with an axle connected to the rear wheel of the motorcycle.
These were fitted with a locking differential and selectable road and off-road gear ratios through which all four and reverse gears worked. 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.
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These vehicles are still highly desirable as collector’s items because of their complex and durable technology, and are correspondingly expensive. A well-restored R75 can be still used for everyday purposes, on or off-road without problems. This very sturdy BMW R75 is in great shape and runs wonderful.
