AJS MODEL 30 600 (1945-66)

The AJS Model 30 600 is a single cylinder motorcycle that was produced from 1945 to 1966. It has a 498cc engine with a pushrod OHV and 2 valves per cylinder. The compression ratio ranges from 6.90:1 to 7.24:1, depending on whether or not there is a compression plate. The bike has a dry sump lubrication system and a Lucas magneto ignition. The transmission is a 4-speed Burman gearbox, and the bike has a chain drive. The bike has a maximum power of 20.9 kW or 28 hp at 5600 rpm. It has a telescopic fork front suspension and a swinging arm dual shock rear suspension, with drum brakes. The wheels are made of steel and have wire spokes, and both front and rear tires are 19 inches. The wheelbase is 1400 mm or 55 in, and the seat height is 760 mm or 30 in. The bike’s dry weight varies depending on the frame, with the standard rigid frame being 15660 kg or 353 lbs, the spring frame being 175 kg or 386 lbs, and the competition rigid frame being 137 kg or 303 lbs. The fuel capacity also varies by frame, with the rigid and spring frame having a capacity of 13 L or 4.23.4 US gal and the competition frame having a capacity of 10.2 L or 2.7 US gal.

Technical specifications:

Make Model: AJS Model 18 500 (S, CS, Statesman)

Year: 1945 – 66
Engine: Single cylinder, 2 valve per cylinder, pushrod OHV
Capacity: 498 c / 30.4 cu in
Bore x Stroke: 82.5 x 93 mm
Compression ratio: 6.90:1 (with compression plate) 7.24:1 (with no compression plate)
Cooling system: Air cooled
Lubrication: Dry sump
Oil Capacity: 2.3 L / 4.8 US pt
Induction: Carburetor, type 89B/IAK
Ignition: Lucas magneto
Starting: Kick
Max Power: 20.9 kW / 28 hp @ 5600 rpm
Transmission: 4 Speed, Burman gearbox
Drive: Chain
Front Suspension: Hydraulic telescopic fork
Rear Suspension: Swinging arm, dual shocks
Front Brakes: Drum
Rear Brakes: Drum
Wheels: Steel, wire spokes
Front Tyre: 3.25 -19
Rear Tyre: 34.25 -19
Wheelbase: 1400 mm / 55 in
Seat Height: 760 mm / 30 in
Dry-Weight: Standard rigid frame: 15660 kg / 353 lbs Spring frame: 175 kg / 386 lbs Competition rigid frame: 137 kg / 303 lbs
Fuel Capacity: Rigid, Spring frame: 13 L / 4.23.4 US gal Competition: 10.2 L / 2.7 US gal