At the heart of the 1963 AJS Model 18 500 Statesman allround motorcycle, AJS utilizes a 498 cc (30.4 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 28 HP (20.4 kW) at 5,600 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 56.2 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Model 18 500 Statesman measures 172 kg (379 lbs) dry, translating to a power-to-weight ratio of 0.16 HP/kg (6.14 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,397 mm (55 in) wheelbase engineered for quick, flickable steering geometry. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's AJS archive, this model family spans 6 indexed model years from 1960 to 1965, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
