Star Twin 1951 - 1954

This 1952 Star Twin features BSA's designer Bert Hopwood's updated version of Perkin's 500cc engine housed in a plunger sprung frame.

Although this name was also given to a 1949 twin carburettor version of the long stroke A7, it more commonly refers to the updated Hopwood designed 497cc engine housed in a plunger sprung frame.

These were the machines which carried BSA works riders Brian Martin, Fred Rist and Norman Vanhouse to a 1952 Maudes Trophy win - guaranteeing the machine's sales success.

With a top speed of 92mph and acceleration which The MotorCycle called zestful, the Star Twin is a good buy. At a 60mph cruising speed, petrol consumption works out at a reasonable 64mpg. Hopwood's redesigned engine is trouble free, and the gearbox is excellent with positive changes every time.

Often fitted with BSA's own dualseat, a single saddle gives a more comfortable ride. Plunger springing can make the handling choppy on rough surfaces.