BMW R63 750cc OHV c.1928
The BMW R63 was the top of BMWs range in 1928; they had never offered a 750cc OHV motorcycle before. BMW presented two 750cc models, the side valve tourer R62 and the sporting overhead valve R63.
The R62 tourer employed the same long-stroke (78mm) built-up crankshaft as the new 500cc R52, while the sporting R63 featured a short-stroke (68mm) crank coupled with a 83mm bore. These new engines incorporated a...
