AJS Model 20 500: review, history, specs
|AJS Model 20|
|Also called||Model 20 500, Model 20 500|
|Production||1948 - 1959|
|Successor||AJS Model 31|
498cc air-cooled twin, four-stroke
|Bore / Stroke||66.0mm x 72.8mm|
|Top Speed||85 mph (137 km/h)|
|Horsepower||19.58 HP (14.6 KW) @ 6800RPM|
|Transmission||Gear box: 4-speed
Final Drive: chain
Rear: twin shock
|Brakes||Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
|Length||86.22 inches (2190 mm)|
|Width||27.95 inches (710 mm)|
|Height||41.34 inches (1050 mm)|
|Weight||392.42 pounds (178.0 Kg) (dry), 178.0 kg (wet)|
|Fuel Capacity||3.57 Gallon (13.50 Liters)|
The AJS Model 20 500 is a twin, four-stroke allround motorcycle produced between 1948 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.
Variants[edit | edit source]
The Model 20B was the model imported into the USA.
Engine[edit | edit source]
Drive[edit | edit source]
Chassis[edit | edit source]
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 equipped with a twin shock. The Model 20 500 is fitted with a 3.57 Gallon (13.50 Liters) fuel tank. The bike weighs just 392.42 pounds (178.0 Kg).
1948 - 1961 AJS Model 20 500[edit | edit source]
The 1948 AJS Model 20 500 has, at its heart, an air-cooled, four-stroke, 498cc, parallel twin cylinder powerplant mated to a four-speed manual transmission. It comes standard with features such as laced wheels, a suspension package composed of a front telescopic fork and dual rear shocks, a solo, sprung seat, wide handlebars, an analogue instrument cluster, a dual exhaust system, full-fenders, a blacked-out frame, and a large, 17-liter (4.5-gallon) fuel tank.