S2 84 x 90 998cc V-twin
S3 498cc V-twin SV 65x75
S4 74 x 93 400cc
S5 74 x 81 348cc
S7 OHC 70 x 90 346cc Competition
S8 OHV 84 x 90 498cc
S10 OHC 79 x 101 495cc Competition
S12 OHV 65 x 75 249cc
SB6 74 x 81 348cc
SB8 84 x 90 498cc
Although the new 1931 A. J.S. machines which are announced to-day are not vastly different in design to the 1930 models, they strike a note of even greater refinement.
THE writer looked one of the new machines over yesterday. The neat instrument panel mounted on top of the petrol tank is a pleasing feature, and the cleaner design of the engine also is noteworthy. In the side-valve engines the tappets are enclosed by a well which is cast integral with the cylinder barrel, thereby making the engine completely oil-tight., The valves are now set in the cylinder barrel, the head merely performing the function of completing the combustion chamber. Unis allows the head to be made of aluminium and the better heat radiation of this metal, coupled with an increased fin area, gives a double improvement in engine cooling.
All models are now fitted with an entirely new cushion-drive shock absorber, which is extremely efficient, and gives smooth running at slow speeds.
A better saddle suspension and longer springs make a further improvement to the comfort of the rider, and heavier front spindles make the 3 1/2 h.p. models even more suitable for sidecar use.
Throughout all models there is quite an amount of refinement in detail. Low stands make it easier for the llder to park, and although the real wheel is barely raised from the ground its removal is made extremely simple by a combination of the A J S patent quick detachable design and a rear mudguard which is hinged, allowing the tail only to be raised after loosening two nuts Two other features worth special mention are the clean handlebar assembly, with all the control wires running through the handlebars, and in improvement in the lubrication system
The question of the value of racing has for years been a subject of acute controversy, with worthy protagonists on each side, but the attitude of A J Stevens and Co appears to be thoroughly logical. Although AJS machines have more Tourist Trophy wins to their ciedit than any other make, speed in itself has never been the paramount consideration. On the other hand, experience gained in high speed work has undoubtedly assisted in improving the design of standard machines.
The new AJS models will be on view to-day at the showroom of the Queensland agents, British Motor Cycle Co, Ltd , Adelaide Street, Brisbane.
The Brisbane Courier Thu 18 Dec 1930
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