BSA 1952 B31 combination 348cc 1 cyl OHV 3403



BSA 1952 B31 combination 348 cc OHV frame # ZB31 S 22909 engine # ZB31 22909

The rugged, workaday B31 was manufactured from 1945 to the end of 1959, its overhead-valve engine providing the basis for the renowned Gold Star sports roadster. At the time of its introduction, the B31 was BSA’s sole all-new model, joining the lightweight ‘C’ and heavyweight ‘M’ ranges carried over from pre-war days. Produced initially with rigid frame and telescopic front fork, the B31 gained (optional) plunger rear suspension in 1949 and an all-new swinging-arm frame in ’54. A good all-round performer by the standards of its time, the B31 could cruise comfortably all day at 60mph while returning 75-plus miles per gallon, virtues that endeared it to private owners and police forces alike. “The Motor Cycle” published a 1000-mile road test of the B31 in its August 23, 1956 issue and commented favourably on its steering and roadholding qualities, and concluded that the B31 was ”an attractive model for the rider who wants a lively, economical, easy-to-handle all-rounder but who is not insistent on a ultra-high maximum speed.”

This B31 is coupled to a graceful aluminium-bodied Précision sidecar. This actually was a German Stoye, built under licence in France from 1933. After the war Belgian sidecar enthusiast and competition rider Frans Vanderschrick obtained permission to manufacture the Précisions in Belgium. Vanderschrick was killed in July 1952 during a grass track race. His crash was caused by a broken front wheel spindle. The machine crashed into a telegraph pole and he was killed almost instantly. His sidecar passenger Jean-Marie Stas was severely injured but survived the accident. After Vanderschrick’s death the production of Précision sidecars stopped.

This combination is an older restoration in running condition. The “S” in the frame number refers to the plunger rear suspension that was an optional extra. The BSA comes with Smiths 180 km speedometer, bum pad and small size spare petrol jerrycan. The combo has a current road registration. (video: )