AJS 7R "Boy Racer" 350cc 1961

£28,999.00 GBP

Year: 1961

Engine Size: 350CC




AJS 7R "Boy Racer" 350cc 1961. This is a top example having been fully rebuilt to original 1961 spec and Dyno tested in 2015 by Stuart Tonge Engineering at the cost of £3758.00. The work included an engine and gear box strip and rebuild, Tuning and Dyno test. Comes with receipt confirming the works carried out. If your looking for a 7R then this is the one to have. All original spec and restored! Currently decommissioned with no oil or fuel. Will need recommissioning before use, comes with new oil. A fantastic Example!

History: Built from 1948 to 1963, Associated Motor Cycles' AJS 7R - known as the "Boy Racer" - was one of the most, if not the most, successful over-the-counter 350cc class racing motorcycles of all time, until the advent, that is, of the Yamaha-dominated 2-stroke era in the 1970s. Almost all of Britain's road-race stars of the 1950s and 1960s rode a 7R at some stage of their careers and the model remains a major force in classic racing today, being highly sought after by competitors and collectors alike. 25 years at the top is an impressive track record for any motorcycle.

Although a new design by Phil Walker, the 7R, with its chain-driven overhead-camshaft, was very reminiscent of the AJS "cammy" singles of pre-WWII days. Despite the fact that the 7R was not, initially, as powerful as its main rivals - the Velocette KTT and Junior Manx Norton – its robust and simple construction endeared the model to the privateer responsible for his own maintenance. While the duplex loop frame and Teledraulic front fork remained essentially unchanged throughout production, the engine underwent almost continuous revision: the valve angle being progressively narrowed, the crankshaft made stronger and, in 1956, engine dimensions changed from the original long-stroke 74x81mm bore/stroke to the "squarer" 75.5x78mm, permitting higher revs. AMC's own gearbox replaced the previous Burman in 1958, while engine development continued almost to the end of production, by which time the 7R was putting out around 41 horsepower.