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Kenny Roberts won his first of three championships with it. 1978: 2nd 1979: 0W45: 2nd 1980: 0W48: Introduction of an aluminum frame to the YZR500. 2nd 0W48R: At round 4 of the season, the YZR500 returned to a steel frame, and the engine had the outer cylinders reversed and thus rear-directional exhaust. 1981
Roberts won the season-opening round in Argentina on the old square-four Yamaha, but then switched to the new OW61 YZR500 V4 engined bike. [1] He came in third at the Austrian Grand Prix then, sat out the French Grand Prix at Nogaro as he and the other top riders boycotted the race over unsafe track conditions. [ 1 ]
Yamaha Motor Japan Yamaha: Yamaha YZR500 (OW48) 1 Kenny Roberts: All Cagiva Cagiva: Cagiva GP500: 2 Virginio Ferrari: All Riemersma Racing Suzuki: Suzuki RGB500: 3 4 Wil Hartog: 1–2, 4–8 Venemotos Racing Team Yamaha: Yamaha YZR500 (OW48) 4 Johnny Cecotto: All Jen Organs Suzuki: Suzuki RG 500: 5 57 Franco Uncini: 1–2, 4–8 Yamaha I.M.N ...
Roberts first raced in the 250cc class at Willow Springs in 1990, winning 5 races in his debut season in road racing. By 1993, he made his World 500cc debut at the Laguna Seca Raceway event, and was a full-time 250cc racer for 1994 and 1995 with the Marlboro-Yamaha team.
Roberts began the season with his YZR500 having problems with overheating and rear suspension, while Spencer started strongly, winning the first three races and five out of the first seven. [1] Roberts was leading the second race in France, when his Yamaha split an expansion chamber causing it to lose power as Spencer won, with Roberts falling ...
Kenny Roberts: Yamaha USA YZR500: 113 5 2 Virginio Ferrari: Nava Gallina-Suzuki RG500: 89 1 3 Barry Sheene: Heron-Suzuki: RG500 87 3 4 Wil Hartog: Riemersma Racing RG500 66 1 5 Franco Uncini: Zago-Suzuki RG500 51 0 6 Boet van Dulmen: RG500 50 1 7 Jack Middelburg: RG500 42 0 8 Randy Mamola: Zago-Suzuki RG500 29 0 9 Philippe Coulon: Frankonia ...
Coming into the Swedish Grand Prix, Honda's Freddie Spencer led Yamaha's Kenny Roberts 117 to 115 with each man having won five of the season's ten previous races. Roberts had the momentum, having won four of the previous five rounds.
Pos. Rider Team Machine Time/Retired Points 1 Kenny Roberts: Marlboro Agostini-Yamaha: YZR500: 48'16.630 15: 2 Freddie Spencer: HRC-Honda: NS500 +1.230 12: 3 Eddie Lawson: Marlboro Agostini-Yamaha