1962 ajs model 31


Year: 1962

Make: AJS

Model:  Model 31

Engine Capacity: 650cc

Odometer : 6000 miles

This motorcycle is a unique piece of British motorcycle history – a great collector’s piece for those who appreciate the mechanical aspect of riding.

This classic British 650cc parallel twin is a real Australian pickers story. Probably imported to Queensland in late 1962 or early 1963, then dug out as a restoration project in 2002.

The crankshaft on the engine was reground with big end and centre main bearings fitted with oversize pistons, new valves and new chains.

In the early sixties, the British motorcycle industry began introducing alternators to replace the less efficient generators previously in use. For a few years, they continued to keep a magnet to generate the spark. This motorcycle has an alternator (originally 6 volt but converted to 12) for the lights and horn but retains the superior magneto for ignition. This means there is no key for this motorcycle, it’s just kick it and go.

The original mudguards were substituted with much sportier alloy patterns ones, which were used only for the high performance CSR model only in 1962. The current siamesed exhaust pipe was upgraded from a AMC sports model.

Other restoration improvements include new fork bushes and the original rear shock absorber units were reconditioned. Front indicators were fitted using the original pilot lights on either side of the headlight.

At this stage the owner managed to get this machine into general running condition with 800 miles on the odometer. In 2016, it was sold to the current older who continued the restoration by renewing clutch plates, re-fitting jets to the carburettor and fitting gaskets to the primary chaincase to retain oil. A Norton Commando oil filter was installed in the place of the generator to improve rideability and engine longevity.

The rear wheel was replaced with a genuine QD 1962 one. A toggle switch was also added on the toolbox to enable the electrical system to be turned off.

As with most vintage machines which aren’t used on a daily basis, oil gradually accumulates in the crankcase when the engine isn’t running – due to the high capacity oil pump. A tap was included in the restoration to be turned off when the bike was parked, located under the oil tank on the feed oil line. The pink ribbon on kickstart is a loud reminder to ensure that the tap is turned on when starting the bike.

Unlike simple electric starter buttons on modern machines, this motorcycle has a manual start procedure to get it running, but once it does it is smooth and powerful. The AJS 31 has excellent steering, adequate brakes and excellent fuel economy. The overall riding experience is very close to what it would have been in 1962.

This vintage machine has now done over 6000 miles, and has been very well run in. It is in great condition and can withstand long roadtrips. The Triumph replica dualseat and modern silencer make this machine well adapted to modern times, while dripping in old-school cool.

History booklet available, registration expires 3rd December 2019.

All yours for only


Plus on road costs

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02 9698 4433  -  info@gasoline.com.au

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