Giving birth to the engine’s design, this 1938 Triumph Speed Twin showcases Edward Turners vertical twin motor. With a 498cc, twin overhead valve construction, the Speed Twin made a solid 27hp and was the first truly successful British twin.

Early models were only available in ‘Amaranth red’, and were hand painted with gold pinstripes. The hard-tail and initial girder forks meant that the only real suspension for the rider was the sprung seat. Passengers would have to survive with only a doubly thick pad over the rear fender.