Geoffrey Ernest Duke, born in St. Helens, Lancashire, was a British multiple motorcycle Grand Prix road racing world champion. He raced several brands of motorcycle: Norton, Gilera, BMW, NSU and Benel
Geoff Duke (1951)
Duke en route to victory at the 1951 500cc Dutch TT
John Hartle was an English professional road racer who competed in national, international and Grand Prix motorcycle events.
Geoff Duke
…race in the non-championship Kanonloppet at Karlskoga two weeks later. In 1963, Duke formed a racing team – Scuderia Duke, with riders Derek Minter and John Hartle – to race the 1957 Gileras against Mike Hailwood riding the MV Agusta. During 1964, Duke was appointed Competition Manager for Royal Enfield motorcycles…
John Hartle with his hometown's coat of arms helmet emblem