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1971 California 500; Race details; Race 10 of 12 in the 1971 USAC Championship Car season: Date: September 5, 1971: Official name: 1971 California 500: Location: Ontario Motor Speedway, Ontario, California, United States: Course: Permanent racing facility 2.500 mi / 4.023 km: Distance: 200 laps 500.000 mi / 804.672 km: Pole position; Driver ...
Kawasaki already had the largest-displacement Japanese machine with their 650 cc four-stroke W series, [1] but it did not fit the niche Kawasaki was aiming for. Honda had introduced its Honda CB450 in 1965 and in 1969, the Suzuki T500 Titan/Cobra appeared. Also in development was the Yamaha XS 650.
The Kawasaki H1R was racing motorcycle manufactured by Kawasaki which competed in the 500 cc class of Grand Prix motorcycle racing. Based on the Kawasaki H1 street motorcycle, it was powered by a two stroke , three cylinder engine set across the frame.
Ontario Motor Speedway was a motorsport venue located in Ontario, California.It was the first and only automobile racing facility built to accommodate major races sanctioned by all of the four dominant racing sanctioning bodies: USAC (and now IndyCar Series) for open-wheel oval car races; NASCAR for a 500-mile (800 km) oval stock car races; NHRA for drag races; and FIA for Formula One road ...
The first three California 500s had 180,223 spectators in 1970, 168,498 in 1971, 161,240 in 1972. Entering the event, it was unclear if the 1973 crowd would even reach 100,000 spectators. Jim Cook, the executive vice-president of the Hulman-Jones Group said "Our biggest problem was getting people to realize that there was going to be a race."
Kawasaki KRR 150 (Ninja KR 150R/ KR 150SP/ KR 150SE/KR 150SSE, Ninja KRR 150/KRR 150 SE/KRR 150SSR, Victor 150, Serpico 150/KRZ 150, ZSR Cyclone 150, Scorpion 150 (in Argentina) (Production year: 1989–2004 and 1996's–2015 for the Ninja 150R/SS in Indonesia) 2-stroke Engine (Marketed in the Philippines, Thailand, Indonesia, Malaysia, and ...
The H2 750 was introduced in 1971, the culmination of Kawasaki's two-stroke project. Kawasaki said of the bike, "It's so quick it demands the razor-sharp reactions of an experienced rider." [13] Its engine displacement of 748 cc (45.6 cu in) produced 55 kW (74 hp) at 6,800 rpm. [7] The engine was entirely new and not a bored-out 500.
In an era of unrestricted rules, the Kawasaki KR1 125cc twin cylinder was outclassed by the expensive, V4 engines used by the Yamaha racing team and the square four engines used by Suzuki. [2] Without any financial or mechanical support from the Kawasaki factory, Simmonds spent the 1967 and 1968 Grand Prix seasons sorting out the motorcycle's ...