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Gilera GFR 250
The Gilera GFR 250 (which stands for ''Gilera Formula Racing'') is a racing motorcycle designed, developed and built by Gilera which made its debut in the 250cc class of the world championship in 1992. See also *Aprilia RS250 *Honda NSR250 *Honda RS250R *KTM 250 FRR *Suzuki RGV250 *Kawasaki KR250 *Yamaha YZR 250 The Yamaha YZR 250 was a 250cc Grand Prix racing motorcycle made by Yamaha 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 ... References {{Grand Prix motorcycles GFR 250 Grand Prix motorcycles Motorcycles introduced in 1992 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gilera
Gilera is an Italian motorcycle manufacturer founded in Arcore in 1909 by Giuseppe Gilera (1887–1971). In 1969, the company was purchased by Piaggio. History In 1935, Gilera acquired rights to the Rondine four-cylinder engine. It was, at that time, the world's most powerful engine with . The first across-the-frame 4-cylinder motorcycle was the racer 1939 Gilera 500 Rondine. It had double-over-head camshafts, forced-inducting supercharger and was water-cooled, producing @9000 and had a top speed of . This formed the basis for Gilera' s racing machines for nearly forty years. From the mid-thirties, Gilera developed a range of four-stroke engine machines. The engines ranged from 100 to 500 cc, the most famous being the 1939 Saturno. Designed by Giuseppe Salmaggi, the Saturno was inspired by the pre-war Gilera VTEGS 500 cc “Otto Bulloni” yet was quite different due to its unit construction. After withdrawing from competition in 1957, Gilera changed direction ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-stroke
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, 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 (automotive), 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 Scotland, Scottish engineer Dugald Clerk, who pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V-twin Engine
A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration. Although widely associated with motorcycles (installed either transversely or longitudinally), V-twin engines have also been used for industrial engines and in several small cars. The V-twin design dates back to the late 1880s. Origins One of the first V-twin engines was built by Gottlieb Daimler in 1889. It was used as a stationary engine, for boats and in the Daimler Stahlradwagen ("steel-wheeled car"), Daimler's second car. The engine was also manufactured under licence in France by Panhard et Levassor. An early V-twin engined motorcycle was produced in November 1902 by the Princeps AutoCar Company in the United Kingdom. The following year, V-twin motorcycles were produced by Eclipse Motor & Cycle Co in the United Kingdom (the ''XL-ALL'' model), Glenn Curtiss in the United States, and NSU Motorenwerke in Germany. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chain Drive
Chain drive is a way of transmitting mechanical power from one place to another. It is often used to convey power to the wheels of a vehicle, particularly bicycles and motorcycles. It is also used in a wide variety of machines besides vehicles. Most often, the power is conveyed by a roller chain, known as the drive chain or transmission chain, passing over a sprocket gear, with the teeth of the gear meshing with the holes in the links of the chain. The gear is turned, and this pulls the chain putting mechanical force into the system. Another type of drive chain is the Morse chain, invented by the Morse Chain Company of Ithaca, New York, United States. This has inverted teeth. Sometimes the power is output by simply rotating the chain, which can be used to lift or drag objects. In other situations, a second gear is placed and the power is recovered by attaching shafts or hubs to this gear. Though drive chains are often simple oval loops, they can also go around corners by placi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda RS250R
The Honda RS250R was a race motorcycle manufactured by Honda to race in the 250cc class of the Grand Prix motorcycle World Championship. It was conceived as a ''production racer'' for customer teams and privateer riders, while factory-supported teams raced the works bikes RS250RW and NSR250. The RS250R debuted in 1984 as a development prototype, racing in the domestic All Japan Road Race Championship and entering some rounds in the World Championship. It was put on sale for customer teams for the season onwards. The Honda RS250R featured a V-twin 250 cc two-stroke engine with a V-angle of 90 degrees. A new 75 degrees V-twin was introduced in 1993. Between 1984 and 2009 the RS250R has been produced in four different generations, named: ND5 (1984), NF5 (1987), NX5 (1993) and NXA (2001). The bike should not be confused with the RS250RW, which was the name adopted for factory bikes in 1985 and from 2003 to 2009. Between 1986 and 2002 the factory bikes were named NSR250. See ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KTM 250 FRR
The KTM 250 FRR was a racing motorcycle made by KTM, which was used in the 250cc class of Grand Prix motorcycle racing from 2005 until 2008. History The bike was created as a 250cc variant to the already existing KTM 125 FRR that KTM participated with in the 125cc. The plans to create this bike also came when the company had plans to participate with a Factory team in the 250cc class in 2005. The bike was equipped with a two-cylinder engine with the arrangement of the front-facing cylinders. Season progress 2005 The bike and team debuted relatively late in the year with Australian rider Anthony West. On its debut, West shocked many when he scored an impressive second place in a wet British grand prix, fighting for the lead after then-leader Hiroshi Aoyama crashed out with fifteen laps to go. However, the results after were lacklustre and West was not able to score any more podiums for the remainder of the season. Overall, the team scored 30 points, getting a best-place fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suzuki RGV Γ 250
is a Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, all-terrain vehicles (ATVs), outboard marine engines, wheelchairs and a variety of other small internal combustion engines. In 2016, Suzuki was the eleventh biggest automaker by production worldwide. Suzuki has over 45,000 employees and has 35 production facilities in 23 countries, and 133 distributors in 192 countries. The worldwide sales volume of automobiles is the world's tenth largest, while domestic sales volume is the third largest in the country. Suzuki's domestic motorcycle sales volume is the third largest in Japan. History In 1909, Michio Suzuki (1887–1982) founded the Suzuki Loom Works in the small seacoast village of Hamamatsu, Japan. Business boomed as Suzuki built weaving looms for Japan's giant silk industry. In 1929, Michio Suzuki invented a new type of weaving machine, which was exported overseas. The company's fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamaha YZR 250
The Yamaha YZR 250 was a 250cc Grand Prix racing motorcycle made by Yamaha 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 estab ... from 1973 through 2003. Notes External links {{Yamaha motorcycles timeline Yamaha motorcycles Grand Prix motorcycles Motorcycles introduced in 1990 Two-stroke motorcycles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycle Racing
Motorcycle racing (also called moto racing and motorbike racing) is the motorcycle sport of racing motorcycles. Major varieties include motorcycle road racing and off-road racing, both either on circuits or open courses, and track racing. Other categories include hill climbs, drag racing and land speed record trials. Categories The FIM classifies motorcycle racing in the following four main categories. Each category has several sub categories. Road racing Road racing is a form of motorcycle racing held on paved road surfaces. The races can be held either on a purpose-built closed circuit or on a street circuit utilizing temporarily closed public roads. Traditional road racing Historically, "road racing" meant a course on closed public roads. This was once commonplace but currently only a few such circuits have survived, mostly in Europe. Races take place on public roads which have been temporarily closed to the public by legal orders from the local legislature. Two champ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1992 Grand Prix Motorcycle Racing Season
The 1992 Grand Prix motorcycle racing season was the 44th F.I.M. Road Racing World Championship season. Honda secured the constructor's title in all three categories. Season summaries 500cc summary Wayne Rainey won the 1992 World Championship for the third consecutive year on a Kenny Roberts Marlboro Yamaha, however he was largely outshone by a dominant Michael Doohan on his Rothmans Honda, and was only prevented from winning what would have been his first world title by injury. Doohan won the first four opening rounds, the first he nearly didn't qualify for, due to tricky conditions in Suzuka, but ended up winning as Rainey crashed out in the rain. Rainey followed Doohan home in second in the following three races, still not fully fit due to a broken femur he had suffered at the end of the 1991 season. Daryl Beattie was third at his home race in Australia, riding as a replacement for Wayne Gardner, who injured himself in a crash in the opening round. There were also podiu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aprilia RS250
The Aprilia RS250 is a two-stroke sport bike made by the Italian motorcycle manufacturer Aprilia. The Aprilia RS250 is a race oriented motorcycle with technology derived from Aprilia's racing experience. It is inspired by the Aprilia RSW250 Grand Prix motorcycle used by riders such as Valentino Rossi, Max Biaggi and Loris Capirossi in MotoGP races. History The RS250 was designed by Aprilia to resemble their GP250 bike to celebrate their success in the championship. The Aprilia RS250 is powered by a modified Suzuki RGV250 (VJ22) engine which is prepared by Aprilia, changes include a revised ECU, Aprilia-designed expansion chambers, barrels and airbox. The twin 34 mm flat slide Mikuni carburettors are retained from the RGV. Chassis The frame is a cast twin spar aluminium/magnesium alloy with thin-walled monocoque reinforcements, with the engine as a fully stressed member manufactured by Benelli for Aprilia. The banana swingarm is made out of the same polished aluminium alloy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda NSR250
The Honda NSR250 and Honda RS250RW were race motorcycles manufactured by Honda Racing Corporation to race in the 250cc class of the Grand Prix motorcycle World Championship. Both names identified the factory specification bikes entrusted to works teams, while customer teams used the ''production racer'' Honda RS250R. The first bike debuted in as Honda RS250RW, then from to the factory bikes were named NSR250. In the RS250RW name was resurrected until the demise of the 250 cc class. The 250 cc class world championship was won 11 times by riders riding the Honda RS250RW and NSR250: Freddie Spencer (1985), Anton Mang (1987), Sito Pons (1988, 1989), Luca Cadalora (1991, 1992), Max Biaggi (1997), Daijiro Kato (2001), Dani Pedrosa (2004, 2005) and Hiroshi Aoyama (2009). Honda also mass-produced a road legal Honda NSR250R. See also * Honda NSR250R The Honda NSR250R is a street-legal road-orientated 249cc two stroke sport bike produced by Honda, Honda Motor Co., Lt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
