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NSU OSL 501 1938 500cc OHV

 

Engine number: 336911      Frame number: 1085843

Year: 1938                          Cylinder capacity: 500 cc

Documents: original and modern Austrian road registration

 

video: https://www.youtube.com/watch?v=phPbVsyAj94

 

The history of the NSU OSL begins with a great depression. After the 500 cc motorcycles from NSU were never able to score points in competitions and racing successes were...

Franz Josef Fahrt 2018 Bad Ischl

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...

Meray 100 years