Ivy's big break into Grand Prix
motorcycle racing came towards the end of
1965, when he was selected as a stand-in and flown to Japan in October by Yamaha due to regular rider
Mike Duff crashing in practice for the Japanese GP, suffering a broken thigh. Ivy finished fourth in the 125 cc race and third in the 250 cc class, the highest-placed of the Yamahas. In
1966, he won his first race as a regular rider for the works
Yamaha team in the first race of the year, the Spanish Grand Prix at the
Montjuic Park Circuit,
Barcelona in
Spain, and took three more wins—not enough, however, to beat
Swiss rider
Luigi Taveri, who beat Ivy to the title by six points. In
1967, Ivy dominated the 125 cc championship: he won eight out of twelve races to claim the
World Championship by 16 points over
Phil Read. On top of this, he won two 250 cc races in
France and
Belgium. In
1968, Ivy and teammate
Phil Read controlled both the 125 and 250 cc championships. In the process Ivy also became the first 125cc rider to lap the famous Isle Of Man TT Mountain Course at over 100 mph. As the season progressed,
Yamaha ordered them to win one title each, with Ivy scheduled to win the 250 cc championship and Read the 125 cc championship. ==Film stuntman==