What does the AJS Model 31 CSR stand for?
Capable of 100 mph performance, the AJS Model 31 became popular with the American market. The AJS Model 31 CSR designation officially stood for Competition / Sport / Road but it was dubbed the Coffee Shop Racer by its rivals.
When did the AJS 650 twin come out?
AJS Classic Motorcycles. the ajs 650 twin produced by amc was a popular and powerful roadster, and was equally well regarded a long legged touring bike in solo form or very competent sidecar machine. image provided by www.classic-auctions.com. The AJS Model D was made between 1912 and 1925.
What kind of engine does AJS Model 31 have?
Make Model. AJS Model 31 650 Year 1957 – 66 Engine Four stroke, pushrod parallel twin, OHV, Capacity 646 cc / 39.4 cu in Bore x Stroke 72 x 79.3 mm
Is the AJS Model 31 a Matchless G12?
Make Model. The AJS Model 31 was also produced as the Matchless G12 by the same company. Designer by Phil Walker, AMC knew that it had to be a 650cc but wanted to use as many cycle parts from the Model 11 as possible. The cylinders could not be bored out further so the stroke was lengthened from 72.8mm to 79.3mm, resulting in a capacity of 646cc.
Capable of 100 mph performance, the AJS Model 31 became popular with the American market. The AJS Model 31 CSR designation officially stood for Competition / Sport / Road but it was dubbed the Coffee Shop Racer by its rivals.
What are the specs of an AJS Model 31 650?
It comes standard with features such as a blacked-out frame, a suspension package composed of a front telescopic fork and dual shocks as a rear suspension, a dual seat, a chromed, dual exhaust system, laced wheels, full fenders, and a dual tone paint scheme.
What kind of engine does a 1957 AJS have?
The 1957 AJS Model 31 650 has, at its heart, an air-cooled, four-stroke, 646cc, parallel twin powerhouse paired to a four-speed manual transmission, and can reach a maximum power output of 43 horsepower at 6000 rpm.
Make Model. The AJS Model 31 was also produced as the Matchless G12 by the same company. Designer by Phil Walker, AMC knew that it had to be a 650cc but wanted to use as many cycle parts from the Model 11 as possible. The cylinders could not be bored out further so the stroke was lengthened from 72.8mm to 79.3mm, resulting in a capacity of 646cc.