 | This article relies largely or entirely on a single source .(May 2024) |
| Manufacturer | Yamaha |
|---|---|
| Production | 1963 |
| Class | 125cc |
| Engine | 125 cc single-cylinder 2-stroke |
| Power | 25 bhp (19 kW) @ 12,000 rpm |
| Transmission | 6-speed |
| Suspension | Telescopic hydraulic fork (front) dual-shock absorbers with adjustable preload (rear) |
| Brakes | Drum brakes |
The Yamaha RA75 is a racing motorcycle produced by Yamaha, for the 125cc class of Grand Prix motorcycle racing, in 1963. [1]
After Yamaha did not appear in the 125cc world championship competitions in 1962, the RA75 was presented in 1963 which, compared to the previous one, had a slight increase in stroke and an increase in power to 25 hp delivered at a higher rpm. high, at 12,000 rpm; the gearbox was also brought to 8 reports. It was the last series equipped with a single-cylinder engine.
Yamaha Motor Co., Ltd. is a Japanese mobility manufacturer that produces motorcycles, motorboats, outboard motors, and other motorized products. The company was established in the year 1955 upon separation from Nippon Gakki Co., Ltd. and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012.
Luca Cadalora is an Italian former professional motorcycle racer who is the 1986 125 cc World Champion, 1991 and 1992 250 cc World Champion and 8-time Premier Class race winner. He competed in Grand Prix motorcycle racing from 1984 to 2000.
The 1975 Grand Prix motorcycle racing season was the 27th F.I.M. Road Racing World Championship season.
Kent Andersson was a Swedish professional motorcycle road racer. He competed in Grand Prix motorcycle racing between 1966 and 1975, most prominently as a member of the Yamaha factory racing team where he was a two-time 125cc World Champion. Andersson was notable for being the only Swedish rider to win an FIM road racing world championship.
The 1964 Grand Prix motorcycle racing season was the 16th F.I.M. Road Racing World Championship Grand Prix season. The season consisted of twelve Grand Prix races in six classes: 500cc, 350cc, 250cc, 125cc, 50cc and Sidecars 500cc. It began on 2 February, with United States Grand Prix and ended with Japanese Grand Prix on 1 November.
The 1966 Grand Prix motorcycle racing season was the 18th F.I.M. Road Racing World Championship Grand Prix season. The season consisted of twelve Grand Prix races in six classes: 500cc, 350cc, 250cc, 125cc, 50cc and Sidecars 500cc. It began on 8 May, with Spanish Grand Prix and ended with Japanese Grand Prix on 17 October.
Dave Simmonds was a British professional Grand Prix motorcycle road racer. He competed in the Grand Prix world championships from 1963 to 1972. Simmonds is notable for winning the 1969 125 cc FIM road racing world championship.
The 1977 Grand Prix motorcycle racing season was the 29th F.I.M. Road Racing World Championship season.
The 1984 Grand Prix motorcycle racing season was the 36th F.I.M. Road Racing World Championship season.
The 1986 Grand Prix motorcycle racing season was the 38th F.I.M. Road Racing World Championship season.
The 1995 Grand Prix motorcycle racing season was the 47th F.I.M. Road Racing World Championship season.
The 2000 Grand Prix motorcycle racing season was the 52nd F.I.M. Road Racing World Championship season.
The 2001 Grand Prix motorcycle racing season was the 53rd F.I.M. Road Racing World Championship season.
The 2002 Grand Prix motorcycle racing season was the 54th F.I.M. Road racing World Championship season. The season consisted of 16 races, beginning with the Japanese motorcycle Grand Prix on 7 April 2002 and ending with the Valencian Community motorcycle Grand Prix on 3 November.
Charles Mortimer is an English former professional motorcycle short-circuit road racer and race-school instructor. He competed in the Grand Prix motorcycle road racing world championships from 1969 to 1979. He remains the only competitor to have won FIM Grand Prix races in the 125, 250, 350, 500 and 750 world championship classes.
Harald Bartol is an Austrian former professional Grand Prix motorcycle road racer, engine tuner and former Technical Director for the KTM racing team.
The Yamaha YA-1 is the first motorcycle produced by the Yamaha Motor Company. It was made from 1955 to 1958. This was also the first vehicle in Japan to have a primary kick start system. The Society of Automotive Engineers of Japan(in Japanese), includes the 1955 Yamaha 125YA-1 as one of their 240 Landmarks of Japanese Automotive Technology.
The 2001 Rio de Janeiro motorcycle Grand Prix was the sixteenth and latest round of the 2001 Grand Prix motorcycle racing season. It took place on the weekend of 1–3 November 2001 at the Autódromo Internacional Nelson Piquet. It was also the final 500cc race in Grand Prix motorcycle racing history. This also marked the final Grand Prix win in the career of Daijiro Kato before his death caused by a crash in the 2003 Japanese motorcycle Grand Prix race.
The 2011 Grand Prix motorcycle racing season was the 63rd F.I.M. Road Racing World Championship season. The 2011 season was also the final season for 800cc engines in MotoGP, and also for 125cc machinery, as both MotoGP switched back to 1000cc engines and a new four-stroke Moto3 class was also introduced in 2012. Casey Stoner was crowned as MotoGP World Champion for the second time, following his ninth victory of the season at the Australian Grand Prix. Stoner, who was champion previously in 2007, finished 16 of the 17 races to be held in the top three placings – equalling a premier class record held by both Valentino Rossi and Jorge Lorenzo – including ten wins to become the final 800cc champion before the premier class reverted to 1000cc engines in 2012. As of 2022, this was the last time the premier class was won by a non-European rider, and also the only season in the 2010s decade that the premier class was won by a rider other than Marc Márquez or Jorge Lorenzo. The Moto2 title was decided before the final race of the season at the Valencian Grand Prix. Stefan Bradl became Germany's first motorcycle World Champion since Dirk Raudies won the 1993 125cc World Championship title after Marc Márquez, the only rider that could deny Bradl of the championship, was ruled out of the race due to injuries suffered during free practice at the Malaysian Grand Prix. The final 125cc world championship title went to Spain's Nicolás Terol, after he finished second in the final race of the season in Valencia, and his only title rival Johann Zarco crashed out during the early stages of the race. Terol, who finished third in the class in 2009 and second to Márquez in 2010, ended the season 40 points clear of Zarco, with Maverick Viñales 14 points further behind, after winning the final two races of the season. The season was marred by the death of Marco Simoncelli at the Malaysian Grand Prix.
The Yamaha 125 V4, also known as the RA31A, is a racing motorcycle produced by Yamaha, for the 125cc class of Grand Prix motorcycle racing, between 1966 and 1970.
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