J. A. Prestwich and Company (JAP), manufacturer of fine motorcycle engines, designed a radical, new, double overhead camshaft (DOHC) racing engine in 1922. It was hugely successful, breaking records all over the place.
By 1932, JAP had developed a speedway engine to the point where it would produce 37.8 bhp at 5,750 rpm. At the time it was the world’s most powerful un-supercharged engine of its size and one that would dominate speedway tracks for the next 25 years
Fergus “The Flyin’ Scot” Anderson installed one of the JAP engines in a Grindlay-Peerless machine and took it to Brooklands. on this day in 1932.
He brought the new engine across the finish line on his first lap at 98 mph and 109.22 mph on the second. Fergus would take home the One Hour Trophy when he averaged 100.52 mph.
