SS Jaguar 100: The Remarkable Story of 18008

he open two-seater SS Jaguar 100 was introduced in 1935, the name derived from the car’s 100mph top speed, and was the first model to use the Jaguar moniker (previously the company founded by William Lyons and William Walmsley had produced motorcycle sidecar combinations under the Swallow Sidecars banner, and then cars using the ‘SS’ brand). The SS 100 was powered by a Harry Weslake-developed version of the six-cylinder engine produced by Standard Motor Company. SS Jaguar 100 chassis No. 18008, carrying registration BWK 77, and now known as ‘Old No. 8’ in deference to its chassis number, is regarded as the first works Jaguar racing car, and initially came to fame in the 1936 Alpine Trial (not to be confused with the Alpine Rally), which was run in Switzerland over a distance of 1,455 miles. Tommy and Elsie Wisdom persuaded William Lyons to lend them the then-new BWK 77 for the event, and against initial expectations they won in the car. Following the Alpine Trial victory Old No. 8 became the company’s development car, Tommy Wisdom continuing to drive in it in circuit-racing events, while Sammy Newsome took the wheel for hillclimbs. As the car continued to be developed, it was lightened, and a new, more powerful 3.5-litre engine was fitted in place of the original 2.5-litre version, with the engine repositioned to improve weight distribution. In this form, in 1937 the car lapped the outer circuit at Brooklands at a speed of 118mph, winning with Wisdom at the wheel at an average speed of 112mph.