This sturdy G80 is a good runner.Associated Motor Cycles announced its post-war range of AJS and Matchless ‘heavyweight’ singles in June 1945.
source.image: classic-motorcycle.com
Coded Model 18 and G80 respectively, the two 500cc models shared the same 93mm stroke as their 350cc brethren, coupled to an 82.5mm bore.
Housed in a rigid frame with Teledraulic front fork, the ruggedly built overhead-valve engine drove via a four-speed gearbox. Hairpin valve springs were adopted for 1949 and a swinging-arm frame introduced, the latter initially for export only but available in the UK from 1950.
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Cleverly, AMC had devised this frame by the simple expedient of producing a new suspension-carrying rear sub-frame that bolted on in place of the old rigid back end.Cylinder: 1.Engine type: 4-stroke / ohv.Bore / Stroke: 82.5 x 93 mm.Power: 28hp @ 5600 rpm.Compression Ratio: 1 : 7.3.Weight: 177 kg.Top Speed: 126 km/h.
