Zündapp KS500 1937 500cc OHV Twin

 

Frame number: 172124         Engine number: 171380

Year: 1937                          Cylinder capacity: 500 cc

 

video: https://www.youtube.com/watch?v=jsKIOAP9rwM

video on the run: https://www.youtube.com/watch?v=g8m0qqUga5g

 

Zündapp was a major German motorcycle manufacturer founded in 1917 in Nuremberg by Fritz Neumeyer, together with the Friedrich Krupp AG and the machine tool...

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...

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