AJS Model 31

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The AJS Model 31650 Swift is a twin, four-stroke allround motorcycle produced between 1959 and 1966. Claimed horsepower was 30.71 HP (22.9 KW) @ 6000 RPM.

Engine

The engine was a air cooled twin, four-stroke. A 72.0mm bore x 79.3mm stroke result in a displacement of just 646.0 cubic centimeters. The engine features a 7.5:1 [[compression ratio]]. Fuel was supplied via a overhead valves (ohv).

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 hydraulic telescopic while the rear was equiped with a twin shock girling. The Model 31650 Swift is fitted with a 4.23 Gallon (16.00 Liters) fuel tank. The bike weighs just 388.01 pounds (176.0 Kg).

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