c.1959 Velocette 350cc MAC Special Frame no. 14637 Engine no. MAC 21625
Engine development pursued as part of Velocette's scrambles programme bore fruit in 1956 in the shape of the high-performance Venom '500' and its 350cc sibling, the Viper. The touring MSS and MAC models' swinging-arm frame and telescopic fork were retained for the newcomers, while full-width alloy hubs were adopted to boost braking power, and smart chromed mudguards fitted to enhance the models' sporting image. In 1960 'Clubman' versions of both were introduced (minus the enclosure panels of the standard models), which featured a raised compression ratio, Amal TT carburettor, 'racing' magneto, rear-set footrests and a close-ratio gearbox among many other improvements. When supplied with the optional dolphin fairing, the model was known as the Clubman Veeline. The 350 MAC disappeared from the range in 1960 and the Viper in 1968, leaving only the 500cc models, which lasted until the end of Velocette production in 1971.
This interesting, Clubman-style MAC Special consists of an engine dating from circa 1952 and a frame made circa 1960. However, it should be noted that the accompanying German registration document records the date of first registration as 1st July 1959 and the model as 'Viper Clubman', which clearly it is not. Built by ex-racer Josef Siebert, the machine also comes with a substantial file of mainly technical literature.