AJS Motorcycles

The AJS 3.49hp OHV Two Port Model S6

Specifications

Engine, A.J.S. Design and Manufacture. Inclined Single Cylinder. Overhead Valves. Entirely enclosed Rocker Gear and Push Rods. (74 x 81 m.m. Bore and Stroke, 349 c.c. capacity). Improved system of Mechanical Lubrication. Detachable Cylinder Head. Two-port Exhaust. Aluminium Piston. Roller Bearings to Big End of Connecting Rod. Ball Bearing Main Shafts.

Frame, Semi-cradle, with Duplex Chainstays.

Three-Speed Countershaft Gear, Ratios, 5.8, 8.51 and 15.46 to 1.

Clutch, Hand-controlled.

Footstarter, with enclosed operating mechanism.

Rear Wheel, A.J.S. Patent Quick Detachable.

Tyres, 26" x3.00" Wired-on Avon Heavy Non-skid. Rear Mudguard, Hinged.

Hubs, Taper Roller Bearing.

Carburettor, Amal, with twist grip control.

Handlebars, New Type, with Steering Damper.

Footrests, adjustable to any position.

Brakes, Internal Expanding Front and Rear, quick adjustable.

Transmission, All Chain (Hans Renold), in. pitch, .305 width. Primary Drive enclosed. Rear Drive, the top half only is covered.

Shock Absorber, on Engine Shaft. Price - £53.0.0.

Saddle, adjustable.

Magneto, Lucas, mounted behind Engine. Stand, Central, Spring-up.

Rear Carrier, Detachable.

Tools, complete kit.

Wheel Base, 54 in.

Petrol Tank, capacity 2 gallons.

Oil Tank, capacity 4½ pints.

Weight, to standard specification, 291 lbs

Extra for Lucas Magdyno Electric Lighting Set with Instrument Panel, as illustrated,

Price Solo . £9: 10:0
Price Combination £10: 0:0

Extra for Lucas Magdyno Electric Lighting Set, without Instrument Panel,

Price Solo £5: 10:0
Price Combination £6: 0: 0

Extra for 26"x3.25" Tyres £0: 2:9

Source: AJS Factory Catalogue 1931