SPECIFICATION.
ENGINE - Of " A.J.S." design and manufacture. Inclined single-cylinder, Side-by-Side valves. Bore 84 m.m. Stroke 90 m.m. Capacity 498 c.c. Adjustable mechanical lubrication by gear driven pump made integral With the magneto chain cover. Detachable aluminium alloy cylinder head, which, when removed leaves the valves "in-situ." Enclosed tappets, valve gear and exhaust valve lifter mechanism. Aluminium alloy piston with fully floating gudgeon pin and four rings. Roller bearing big end, single row ball bearing to timing-side mainshaft and double row ball bearing to driving side mainshaft. Inspection disc on magneto chain cover for inspecting chain tension. Vernier setting device for ignition timing.
GEAR BOX - Three-speed constant mesh gear box made to "A.J.S." design. 4.81, second 7.06, bottom 12.85 to 1.
CLUTCH - Multi-plate clutch, push rod and cable adjuster provided. Ratios, top
FRAME - Semi-cradle with duplex chain stays and torque tubes, sidecar lugs made integral.
FRONT FORKS - Centre barrel spring type, large smooth-action, adjustable spindles and hand adjustable shock absorbers. With hand adjusted multi-plate steering damper.
HANDLEBARS - Adjustable "Clean" type with integral controls, including twist grip and steering damper control knob.
WHEELS - Rear wheel "A.J.S." patent, quickly detachable, with locking device on sleeve bolts. Adjustable taper roller bearings to both wheel hubs.
TYRES - 20 in. x 3.25 in. Studded Cord.
MUDGUARDS - Rear hinged for quick wheel removal. Front fully valanced.
CARBURETTOR - "Amal" needle type with throttle stop and pilot jet.
FOOTRESTS - Footrest arms adjustable to side range position, rubber covered and of sturdy design.
BRAKES - Both 7 in. diameter, brake drums of iron alloy, front with cooling fins. Both fitted with dust and water excluders and finger adjustment.
TRANSMISSION - " Renold " Chain, primary ½ in. x .305 in. running in oil bath. Efficient shock absorber fitted to engine shaft, also running in oil. Rear chain " Renold " 5/8 in. x 3/8 in. fitted with top half chain cover.
SADDLE - " Lycett soft top with three-point suspension, adjustable backwards and forwards.
STANDS - Central spring-up. Front tubular steel bolted to front mudguard.
PETROL TANK - Chromium plated and black finish, with provision for fitting of flush fitting Instrument Panel. Capacity 2½ gallons. Quick-action filler cap.
OIL TANK - Capacity 4½ pints, quick-action filler cap.
REAR CARRIER - Detachable, made of welded steel tubing.
PRICE - To Standard Specification £ 49-10-0
From the 1934 AJS Catalogue
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