Difference between revisions of "AJS Model 20"
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The '''[[AJS]] Model 20500''' is a twin, [[four-stroke]] allround [[motorcycle]] produced between 1949 and 1959. It could reach a top speed of 85 mph (137 km/h). Claimed [[horsepower]] was 19.58 HP (14.6 KW) @ 6800 [[RPM]]. The Model 20 was finally discontinued when the 646 cc [[AJS Model 31]] replaced it in the autumn of 1958. | The '''[[AJS]] Model 20500''' is a twin, [[four-stroke]] allround [[motorcycle]] produced between 1949 and 1959. It could reach a top speed of 85 mph (137 km/h). Claimed [[horsepower]] was 19.58 HP (14.6 KW) @ 6800 [[RPM]]. The Model 20 was finally discontinued when the 646 cc [[AJS Model 31]] replaced it in the autumn of 1958. | ||
==Engine== | ==Engine== | ||
The engine was a [[air cooled]] twin, four-stroke. A 66.0mm [[bore]] x 72.8mm [[stroke]] result in a [[displacement]] of just 498.0 cubic [[centimeter]]s. The engine features a 7.0:1 | The engine was a [[air cooled]] twin, four-stroke. A 66.0mm [[bore]] x 72.8mm [[stroke]] result in a [[displacement]] of just 498.0 cubic [[centimeter]]s. The engine features a 7.0:1 [[compression ratio]]. | ||
==Drive== | ==Drive== | ||
The bike has a 4-speed [[transmission]]. The [[final drive]] was via [[chain]]. Power was moderated via the wet multiplate. | The bike has a 4-speed [[transmission]]. The [[final drive]] was via [[chain]]. Power was moderated via the wet multiplate. |
Revision as of 13:14, 30 April 2019
Manufacturer | Associated Motorcycles Plumstead, London |
---|---|
Production | 1948–1958 |
Successor | AJS Model 31 |
Engine | 498 cc air cooled twin |
Top speed | 85 mph |
Transmission | Four speed gearbox to chain final drive |
Suspension | teledraulic forks, swinging arm rear |
Brakes | drum brakes |
Weight | 395 lb |
Manuals | Service Manual |
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The AJS Model 20500 is a twin, four-stroke allround motorcycle produced between 1949 and 1959. It could reach a top speed of 85 mph (137 km/h). Claimed horsepower was 19.58 HP (14.6 KW) @ 6800 RPM. The Model 20 was finally discontinued when the 646 cc AJS Model 31 replaced it in the autumn of 1958.
Engine
The engine was a air cooled twin, four-stroke. A 66.0mm bore x 72.8mm stroke result in a displacement of just 498.0 cubic centimeters. The engine features a 7.0:1 compression ratio.
Drive
The bike has a 4-speed transmission. The final drive was via chain. Power was moderated via the wet multiplate.
Chassis
It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via expanding [[brake]] (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a telescopic while the rear was equiped with a twin shock. The Model 20500 is fitted with a 3.57 Gallon (13.50 Liters) fuel tank. The bike weighs just 392.42 pounds (178.0 Kg).