Duilio Agostini Duilio Agostini Duilio Agostini (8 April 1926 – 12 April 2008) was an Italian Grand Prix motorcycle road racer. He had his best year in 1955 when he won the 350cc French Grand Prix and finished the season in seventh place in the 350cc world championship. Duilio Agostini was born to a well off family that owned the hotel restaurant Al Porto, now known as the Giardinetto, at Mandello del Lario on the shores of Lake Como; Guests included many important personalities linked to motorcycling, such as Omobono Tenni, Stanley Woods, Terzo Bandini, Primo Moretti and Ugo Prini. Duilio worked
Doug Hele The race win was repeated in 1967. At the 1969 Belgian Grand Prix on the Spa-Francorchamps circuit in the Ardennes, Triumph's factory tester Percy Tait led the world champion Giacomo Agostini for three laps and finished second at an average speed of 116 mph on Hele's Daytona racer. Hele had also started work on development of the three-cylinder Triumph Trident. "Motor Cycle"'s Technical Editor Vic Willoughby concluded his 1967 interview with Hele's confirmation that "...a high-performance seven-fifty parallel twin is not exactly at the top of the desirability stakes", and the triples were developed into the most successful race bikes