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...

1933 AJS 495cc Model 10

Frame no. 7/529   Engine no. 33/10/503

 

In 1927 AJS’ works 350cc racers appeared with a new overhead-camshaft engine. The camshaft was chain driven, its distinctive cast alloy case extending forwards to the front-mounted magneto. A catalogued model from 1928, the ‘cammy’ AJS was built in 350 and 500cc capacities initially, dry-sump lubrication being an unusual feature of the engines, which were carried in open...

Year: 1951                cc: 500

Frame no.: F11 37940          Engine no.: F11 37940

Documents: British V5C Registration document

 

 

A desirable matching-numbers Clubman model fitted with the alloy/bronze cylinder head, Amal TT carburettor and quick-release fuel tank, this '500' International was first owned by one G D Alcock, who rode it in the 1951 and '52 Senior Clubman's TT races on the Isle of Man, finishing in 15th and...

This really nice 1927 flattank BSA 500cc Colonial Model has been restored for a museum collection circa 15 years ago, it was originally sold in Europe as an export model.
 
The machine is fitted with BSA's own three speed gearbox, internal expanding brakes, drip feed oil pump, period Bosch magneto and brass Amac carburettor.
BSA offered several models in 1927, some of them were fitted with wider mudguards for export, called as 'Colonial'...

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...