AJS Model 16: history, specs, pictures

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AJS Model 16MS 1953.jpg
AJS Model 16
Also called Sceptre Sports
Production 1950 - 1966
Class Classic
348 cc OHV air cooled single
Top Speed 78 mph (126 km/h)
Horsepower 16 bhp (12 kW) @5,600 rpm
Transmission Gear box: 4-speed, manual

Final Drive: chain

Clutch: wet multi-disc, manual
Suspension Front: telescopic fork
Rear: dual shocks
Brakes Front: drum
Rear: drum
Front Tire 3.25 -19
Rear Tire 3.25 -19
Wheelbase 56 in
Seat Height 32 in
Weight 382 lb (dry),
Fuel Capacity 3.57 Gallon (13.50 Liters)
Manuals Service Manual

The AJS Model 16 was a British motorcycle made by Associated Motorcycles at the former Matchless works in Plumstead, London. It was a single cylinder, four-stroke all round motorcycle produced between 1949 and 1967. Claimed horsepower was 17.57 HP (13.1 KW) @ 5750 RPM.

Development[edit | edit source]

The rigid framed AJS Model 16M 350 cc single was developed in 1945 from the military Matchless G3/L World War II motorcycle. Well proven in war service, the 350 cc single remained in production selling large numbers to the civilian market well into the 1960s. Simple and practical, the Model 16 needed minimal maintenance and was very economical—ideal during petrol rationing. The company also produced an almost identical motorcycle under the Matchless name as the Matchless G3L.[1] The only difference between the two was that the Matchless carried a magneto at the rear of the cylinder barrel, whereas the AJS magneto was at the front. [2]

In 1953, the Model 16M was modernized with a dual seat replacing the saddle and rear pillion seat. In 1956 the Burman gearbox was replaced with a new four speed unit of AMC's own design and in 1957 further improvements included replacement of the outdated generator with a crankshaft mounted Lucas alternator. The leaky pressed-steel primary drive cover was replaced with an alloy casing.[3]

Engine[edit | edit source]

A 68.6mm bore x 68.6mm stroke result in a displacement of just 347.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 4-speed, manual transmission. Power was moderated via the wet multi-disc, manual.

Chassis[edit | edit source]

It came with a 3.25 -19 front tire and a 3.25 -19 rear tire. Stopping was achieved via drum in the front and a drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a dual shocks. The wheelbase was 55.12 inches (1400 mm) long.

AJS Model 16MS[edit | edit source]

Neither AJS or Matchless opted for plunger type rear springing, and the Model 16 retained a rigid rear frame until 1949, when pivoted rear suspension controlled by hydraulically dampened spring units designed and made by Matchless became available. The difference was indicated by the S (for springer) designation.[2]

AJS Model 16MC[edit | edit source]

The rugged and reliable AJS Model 16 was ideal for the increasingly popular sport of motorcycle trials. Gaining a C (for competition) designation, modifications included upgrading the frame to a welded duplex tubular frame with an engine cradle to reduce weight and redesigned exhaust and footrests to improve ground clearance. In 1957 it was further redesigned to increase clearance from 7 to 10 inches (180 to 250 mm).[4] Hugh Viney led the AJS works team in the post war years and won the challenging 1947 Scottish Six Days Trial on an AJS 16MC at his first attempt—then repeated the achievement the following year and made it three in a row in 1949. In the 1950s this record was beaten by another AJS Works Team rider Gordon Jackson, who won the Scottish Trial four times.[5]

AJS Model 16C[edit | edit source]

In 1964 the AJS Model 16C was launched with a completely redesigned 348 cc engine in which the pushrods were housed in cast cylinder barrel 'tunnels'. The 16C also had a Norton-designed geared oil pump to improve lubrication.[4]

AJS 16 Sceptre[edit | edit source]

To boost US sales the AMC marketing team rebranded the ageing export Model 16 with the new name The Sceptre with new metal tank badges and steel flywheels instead of the old cast iron ones. The compression ratio was also raised to 9:1 and the competition also Norton designed geared oil pump was also fitted as standard.[3]

1950 - 1966 AJS Model 16 350[edit | edit source]

1950 - 1966 AJS Model 16 350

The 1950 AJS Model 16 350 is a classic machine that has, at its heart, an air-cooled, four-stroke, 347cc, single cylinder powerhouse paired to a four-speed manual transmission, and can reach a maximum power output of 18 horsepower at 5750 rpm.

Standard features include laced wheels, a dual seat, a blacked-out frame, a front telescopic fork coupled to dual shocks in the rear, a drum braking system, a 13-liter (3.6-gallon) fuel tank, a large headlight, full fenders, a center stand and mid-mounted foot pegs.

In Media[edit | edit source]

References[edit | edit source]

  1. AJS 35Occ Model 16. Retrieved on 2009-01-03.
  2. 2.0 2.1 from the book 'Great British Motorcycles of the Fifties'. Retrieved on 2009-01-03.
  3. 3.0 3.1 Currie, Bob (1980). Great British Motorcycles of the Fifties. Hamlyn Publishing Group Ltd. ISBN 978-0-86363-010-1. 
  4. 4.0 4.1 Currie, Bob (1993). Classic British Motorcycles. Chancellor Press. ISBN 978-1-85152-250-7. 
  5. Scottish Six Days Trial History. Archived from the original on 31 January 2009. Retrieved on 2009-01-03.