The origins of the Stormer may be traced to a 250cc Villiers Starmaker-powered racer built by Peter Inchley in 1966. The success of the machine in securing a third-place finish at that years' TT prompted its further development for 1967, now badged as an AJS which resulted in a production version, together with a scrambler introduced for the that season. The works scramblers achieved some good results during 1968 prompting the factory to concentrate on the off-road machines for 1969. The scrambler was now typed the Y4 and was joined by a trials machine which survived until the end that year, leaving the Y4 and its deritives to carry the AJS badge into the seventies. Eventually the AJS name and the rights to the design were purchased by Fluff Brown who continued to produce the machine until the early eighties. The increase in classic motocross resulted in a resurgence in the Stormer's fortunes with the motorcycles returning to the track, and winning.
Source: H&H Classic Auctions
