Motorcyle AJS unique
Trademark: AJS
Type: 500cc V4 with compressor
Year of manufacture:1939
Country of origin: Great Britain
The legendary British trademark AJS was started in 1909 by machine manufacturer Joe Stevens in Wolverhampton. In the thirties, AJS was one of the companies which knew the right way to build multi-cylinder engines. The age of single cylinder motorcycles seemed to have passed,for racers as well as touring models.
At the London motorcycle show of 1935, AJS presented the prototype of a four cylinder touring motorbike with air cooling, which has never been produced,except for a single race model. In 1938, a new version was introduced with a supercharger mounted at the front. The motorbike was fast, but its acceleration was not very good and had overheating problems. AJS re-engineered the four cylinder motorcycle, and came up with a liquid cooled model and an improved frame in 1939. This might have made the motorcycle a success,but due to the world war it never was.
In the first year of the world war,the motorcycle earned eleventh place in the British TT. After the war,it raced in 1946 twice before being placed in a museum.
Specifications: 4 stroke 50 degrees V4,liquid cooled,494 cc (50 x 63 mm), 55 HP at 7200 rpm, 2 x SOHC with chain drive,ignition by twin magnetos, fuel supply with Zoller supercharger, primary and secondary chain drive, 4 gears, drum brakes, maximum speed over 160 km/h.
Apart from the corny styling, the AJS four cylinder from 1939 was mechanically very modern. Modern supersport motorbikes have many similar elements.
Type: 500cc V4 with compressor
Year of manufacture:1939
Country of origin: Great Britain
The legendary British trademark AJS was started in 1909 by machine manufacturer Joe Stevens in Wolverhampton. In the thirties, AJS was one of the companies which knew the right way to build multi-cylinder engines. The age of single cylinder motorcycles seemed to have passed,for racers as well as touring models.
At the London motorcycle show of 1935, AJS presented the prototype of a four cylinder touring motorbike with air cooling, which has never been produced,except for a single race model. In 1938, a new version was introduced with a supercharger mounted at the front. The motorbike was fast, but its acceleration was not very good and had overheating problems. AJS re-engineered the four cylinder motorcycle, and came up with a liquid cooled model and an improved frame in 1939. This might have made the motorcycle a success,but due to the world war it never was.
In the first year of the world war,the motorcycle earned eleventh place in the British TT. After the war,it raced in 1946 twice before being placed in a museum.
Specifications: 4 stroke 50 degrees V4,liquid cooled,494 cc (50 x 63 mm), 55 HP at 7200 rpm, 2 x SOHC with chain drive,ignition by twin magnetos, fuel supply with Zoller supercharger, primary and secondary chain drive, 4 gears, drum brakes, maximum speed over 160 km/h.
Apart from the corny styling, the AJS four cylinder from 1939 was mechanically very modern. Modern supersport motorbikes have many similar elements.
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