Yamaha RD48
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Yamaha RD48
The Yamaha RD48 was a two stroke 250cc Grand Prix racing motorcycle. It had two 56x50mm cylinders, disk valves, and an Oldham coupler joining the crank shafts. Weight was 100 kg and power 35PS (34.5 bhp). It was ridden by Tanahara Noguchi and Fumio Ito was a Japanese professional Grand Prix motorcycle racing, Grand Prix motorcycle road racing, road racer. Ito began his Grand Prix career in 1960 Grand Prix motorcycle racing season, 1960, although he was a Factory Yamaha rider as far back as 19 ... in Yamaha's first GP on Sunday, 21 May 1961, the French GP. Along with the 125cc RA41, the RD48 contended at Yamaha's first official entry of the 1961 Isle of Man TT, with team riders Fumio Ito (11th RA41, 6th place, RD48), Yoshikazu Sunako, Osamu Masuko, Taneharu Noguchi (17th place RA41), Hideo Oishi (12th place RA41), New Zealander Peter Pawson and Brit Tony Godfrey. Masuko (Winner of the 1957 250cc Mount Asama Race) crashed in practice and was replaced by Guatemalan Lu ...
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Yamaha Motor Company
is a Japanese multinational manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation (however, Yamaha Corporation is still the largest private company shareholder with 9.92%, as of 2019), and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012. Led by Genichi Kawakami, the company's founder and first president, Yamaha Motor spun off from musical instrument manufacturer Yamaha Corporation in 1955 and began production of its first product, the YA-1 125cc motorcycle. It was quickly successful and won the 3rd Mount Fuji Ascent Race in its class. The company's products include motorcycles, scooters, motorized bicycles, boats, sail boats, personal water craft, swimming pools, utility boats, fishing boats, outboard motors, 4-wheel ATVs, recreat ...
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Yamaha YD-A, YD-B
Yamaha may refer to: * Yamaha Corporation, a Japanese company with a wide range of products and services, established in 1887. The company is the largest shareholder of Yamaha Motor Company (below). ** Yamaha Music Foundation, an organization established by the authority of Japanese Ministry of Education for the purpose of promoting music education and music popularization ** Yamaha Pro Audio, a Japanese company specializing in products for the professional audio market * Yamaha Motor Company, a Japanese motorized vehicle-producing company. The company was established in 1955 upon separation from Yamaha Corporation (above), and is currently one of the major shareholders of Yamaha Corporation (See: Cross ownership). ** Yamaha Júbilo, a Japanese rugby team ** Yamaha Stadium is a football stadium located in Iwata, Shizuoka, Iwata City, Shizuoka Prefecture, Japan, owned by Yamaha Motors, next to whose plant it is located, and was purpose-designed for use with soccer and rugby union ...
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Yamaha RD56
The Yamaha RD56 was a two stroke 250cc Grand Prix racing motorcycle. It had two 56x50mm cylinders, disk valves and an Oldham coupler joining the crank shafts. Power was 47 bhp at 11,000rpm. Although the engine was essentially the same as that of the RD48, the frame was a new design based on the Norton Featherbed. It featured a 7 speed gearbox. It was ridden by Yoshikazu Sunako, Fumio Ito, Hiroshi Hasegawa and Tony Godfrey for the 1963 Grand Prix season. The engine was improved for the 1964 season generating a claimed 50 bhp at 11,000 rpm.p25 MacKellar Phil Read joined the Yamaha team and narrowly beat Redman to become Grand Prix World Champion. Hiroshi Hasegawa won the 1967 Macau Grand Prix The Macau Grand Prix ( pt, Grande Prémio de Macau; ) is a motorsport road race for automobiles and motorcycles held annually in Macau. It is the only street circuit racing event in which both cars and motorcycles participate, and one of onl .... References Bi ...
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Grand Prix Motorcycle Racing
Grand Prix motorcycle racing is the premier class of motorcycle road racing events held on road circuits sanctioned by the Fédération Internationale de Motocyclisme (FIM). Independent motorcycle racing events have been held since the start of the twentieth century and large national events were often given the title Grand Prix. The foundation of the Fédération Internationale de Motocyclisme as the international governing body for motorcycle sport in 1949 provided the opportunity to coordinate rules and regulations in order that selected events could count towards official World Championships. It is the oldest established motorsport world championship. Grand Prix motorcycles are purpose-built racing machines that are unavailable for purchase by the general public and unable to be ridden legally on public roads. This contrasts with the various production-based categories of racing, such as the Superbike World Championship and the Isle of Man TT Races that feature modified ve ...
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Two-stroke Cycle
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust (or scavenging) functions occurring at the same time. Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the power band. Two-stroke engines have fewer moving parts than four-stroke engines. History The first commercial two-stroke engine involving cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. However, unlike most later two-st ...
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Honda RC160
is a Japanese public multinational conglomerate manufacturer of automobiles, motorcycles, and power equipment, headquartered in Minato, Tokyo, Japan. Honda has been the world's largest motorcycle manufacturer since 1959, reaching a production of 400 million by the end of 2019, as well as the world's largest manufacturer of internal combustion engines measured by volume, producing more than 14 million internal combustion engines each year. Honda became the second-largest Japanese automobile manufacturer in 2001. In 2015, Honda was the eighth largest automobile manufacturer in the world. Honda was the first Japanese automobile manufacturer to release a dedicated luxury brand, Acura, in 1986. Aside from their core automobile and motorcycle businesses, Honda also manufactures garden equipment, marine engines, personal watercraft, power generators, and other products. Since 1986, Honda has been involved with artificial intelligence/robotics research and released their ASIMO rob ...
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Two Stroke
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle during two crankshaft revolutions. In a two-stroke engine, the end of the combustion stroke and the beginning of the compression stroke happen simultaneously, with the intake and exhaust (or scavenging) functions occurring at the same time. Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the power band. Two-stroke engines have fewer moving parts than four-stroke engines. History The first commercial two-stroke engine involving cylinder compression is attributed to Scottish engineer Dugald Clerk, who patented his design in 1881. However, unlike most later two-st ...
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Oldham Coupler
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or objects. Couplings do not normally allow disconnection of shafts during operation, however there are torque-limiting couplings which can slip or disconnect when some torque limit is exceeded. Selection, installation and maintenance of couplings can lead to reduced maintenance time and maintenance cost. Uses Shaft couplings are used in machinery for several purposes. A primary function is to transfer power from one end to another end (ex: motor transfer power to pump through coupling). Other common uses: * To alter the vibration characteristics of rotating units * To connect the driving and the driven ...
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Fumio Ito
was a Japanese professional Grand Prix motorcycle road racer. Ito began his Grand Prix career in 1960, although he was a Factory Yamaha rider as far back as 1957 where the Yamaha YD-A & YD-B 250cc machines were so devastating in the Asama highlands race, where Yamaha took the first 3 places with Matsuko on a YD-A taking the honors. Ito himself could have easily won the race and had set the fastest lap, but his YD-A motorcycle seized and cost him the race. The machines were later modified for the 1958 Catalina GP in States with smaller fuel tanks taken from the YA 125 machines, high pipes and high footpegs. Ito was the Star rider of the team and the only Japanese rider alongside four local American riders. Ito finished 6th, even after an unscheduled pit stop for a fouled plug. He enjoyed his best season in 1963 when he won the 250cc Belgian Grand Prix and finished the season in third place in the 250cc world championship, behind Jim Redman and Tarquinio Provini. Motorcycle Gra ...
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1961 French Motorcycle Grand Prix
Events January * January 3 ** United States President Dwight D. Eisenhower announces that the United States has severed diplomatic and consular relations with Cuba (Cuba–United States relations are restored in 2015). ** Aero Flight 311 (Koivulahti air disaster): Douglas DC-3C OH-LCC of Finnish airline Finnair, Aero crashes near Kvevlax (Koivulahti), on approach to Vaasa Airport in Finland, killing all 25 on board, due to pilot error: an investigation finds that the Captain (civil aviation), captain and First officer (civil aviation), first officer were both exhausted for lack of sleep, and had consumed excessive amounts of alcohol at the time of the crash. It remains the deadliest air disaster to occur in the country. * January 5 ** Italian sculptor Alfredo Fioravanti marches into the U.S. Consulate in Rome, and confesses that he was part of the team that forged the Etruscan terracotta warriors in the Metropolitan Museum of Art. ** After the 1960 Turkish coup d'état, 1960 ...
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1962 Grand Prix Motorcycle Racing Season
The 1962 Grand Prix motorcycle racing season was the 14th F.I.M. Road Racing World Championship Grand Prix season. The season consisted of eleven Grand Prix races in six classes: 500cc, 350cc, 250cc, 125cc, 50cc and Sidecars 500cc. It began on 6 May, with Spanish Grand Prix and ended with Argentine Grand Prix on 14 October. Defending 350cc and 500cc world champion Gary Hocking was deeply affected by the death of his friend, Tom Phillis at the 1962 Isle of Man TT and, announced his retirement from motorcycle racing after winning the 1962 Senior TT. Hocking's MV Agusta teammate, Mike Hailwood Stanley Michael Bailey Hailwood, (2 April 1940 – 23 March 1981) was a British professional motorcycle racer and racing driver. He is regarded by many as one of the greatest racers of all time. He competed in the Grand Prix motorcycle ... went on to win his first 500cc world championship. 1962 Grand Prix season calendar Standings Scoring system Points were awarded to the t ...
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Yamaha Motorcycles
List of motorcycles manufactured by Yamaha Motor Company. First bikes * YA-1 built August 1954, produced January 1955. The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine *YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. * YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. *MF-1 (1958) 50 cc, two-stroke, single cylinder, step through street bike *YDS-3 (1964) 246 cc, two-stroke, parallel-twin, it used the world's first oil injection lubrication system in a 2-stroke engine. * DT-1 (1968) Yamaha's first true off-road motorcycle. * XS-1 (1970) Yamaha's first four-stroke engine motorcycle (650 cc twin).http://www.yamaha-motor.com/corporate/historytimeline.aspx , Yamaha website timeline, accessed October 2, 2011 * Yamaha YZ Monocross (1975) First production motocross bike with a ...
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