Difference between revisions of "AJS Model 18"
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|transmission= 4-speed AMC gearbox to final drive chain | |transmission= 4-speed AMC gearbox to final drive chain | ||
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The '''[[AJS]] Model 18 500 Statesman''' | The '''[[AJS]] Model 18 500 Statesman''' and AJS Model 18S were both single cylinder, [[four-stroke]] 500 cc British [[motorcycle]]s produced between 1960 and 1965. Claimed [[horsepower]] was 27.36 HP (20.4 KW) @ 5600 [[RPM]]. They were almost identical to the [[Matchless G80]] and both were produced in the same [[Associated Motor Cycles]] (AMC) London factory from 1945 to 1966. These bikes represent the end of the era of big British singles, as when AMC merged with [[Norton Motorcycle Company|Norton]] production concentrated on twins. | ||
==Development== | |||
The AJS Model 18 was developed from a design from the 1930s, despite which it was still being manufactured 30 years later. The AJS was updated when a springer frame rear suspension was made available for 1949, to become the Model 18S. The suspension was a vast improvement on the rigid rear end - which had given a bouncy ride. Each of the two 'Candlestick' shocks held only 50 cc of SAE 20 weight oil. They were prone to leaks and were replaced by the larger diameter 'Jampot' shocks on the 1951 version. | |||
==Engine== | ==Engine== | ||
The engine was a [[air cooled]] single cylinder, four-stroke. A 86.0mm [[bore]] x 85.5mm [[stroke]] result in a [[displacement]] of just 498.0 cubic [[centimeter]]s. | The engine was a [[air cooled]] single cylinder, four-stroke. A 86.0mm [[bore]] x 85.5mm [[stroke]] result in a [[displacement]] of just 498.0 cubic [[centimeter]]s. | ||
Revision as of 13:11, 30 April 2019
| Manufacturer | Associated Motor Cycles (AMC) (London) |
|---|---|
| Also called | 'The Statesman' (mid-1960s only). Ajay. Jampot. |
| Production | 1945 to 1966 |
| Engine | 498 cc Single cylinder, pushrod 2 valve, 4 stroke |
| Horse Power | 28bhp @ 5600rpm (late models) |
| Transmission | 4-speed AMC gearbox to final drive chain |
| Wheelbase | Template:Convert |
| Dimensions | H 30in |
| Fuel capacity | 3 gallons |
| Manuals | Service Manual |
| Tech Specs · Brochures · Reviews · Ads · Videos | |
The AJS Model 18 500 Statesman and AJS Model 18S were both single cylinder, four-stroke 500 cc British motorcycles produced between 1960 and 1965. Claimed horsepower was 27.36 HP (20.4 KW) @ 5600 RPM. They were almost identical to the Matchless G80 and both were produced in the same Associated Motor Cycles (AMC) London factory from 1945 to 1966. These bikes represent the end of the era of big British singles, as when AMC merged with Norton production concentrated on twins.
Development
The AJS Model 18 was developed from a design from the 1930s, despite which it was still being manufactured 30 years later. The AJS was updated when a springer frame rear suspension was made available for 1949, to become the Model 18S. The suspension was a vast improvement on the rigid rear end - which had given a bouncy ride. Each of the two 'Candlestick' shocks held only 50 cc of SAE 20 weight oil. They were prone to leaks and were replaced by the larger diameter 'Jampot' shocks on the 1951 version.
Engine
The engine was a air cooled single cylinder, four-stroke. A 86.0mm bore x 85.5mm stroke result in a displacement of just 498.0 cubic centimeters.
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 3.25-18 front tire and a 3.25-18 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 18500 Statesman is fitted with a 4.23 Gallon (16.00 Liters) fuel tank. The bike weighs just 379.2 pounds (172.0 Kg). The wheelbase is 55.0 inches (1397 mm) long.