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Haojue 125
The Maxtra 125 is a race motorcycle A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising ... manufactured by Haojue to race in the Grand Prix motorcycle World Championship. Its first season was in . The engine design is innovative for a 125cc racing bike: the cylinder points downwards, rendering several possibilities in the intake system and in weight distribution. Also, Haojue will try to improve the 125 by developing aerodynamics of the bodywork. 2009 specifications Engine Two-stroke single-cylinder liquid cooled Bore & Stroke: 54 X 54.5mm Displacement: 124.8cc Induction: Reed valve Carburettor: 38mm Compression Ratio: 15:1 Ignition: DCI-CDI with battery Transmission: Six-speed cassette-type gearbox Clutch: Dry multiplate Chassis Wheelbase: 1,235mm Fork angle: 23 degrees Trail: 92mm ... [...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] |
KTM 125 FRR
The KTM 125 FRR was a racing motorcycle made by KTM, which was used in the 125cc class of Grand Prix motorcycle racing from 2003 Grand Prix motorcycle racing season, 2003 until 2011 Grand Prix motorcycle racing season, 2011. The bike has been replaced by the KTM RC250GP from 2012 Grand Prix motorcycle racing season, 2012 onwards. History When the bike originally debuted in 2003, it was equipped with a single-cylinder 2-stroke engine as per class regulations at the time. Season progress 2003 In its debut year, the bike was ridden by the official 125cc KTM factory team. Previous year's world championship Arnaud Vincent was brought on board to drive for the team, but he was replaced only after nine races by the Finn Mika Kallio instead. The reason for this change was that the Frenchman was unrealistic about what could be achieved that year - although he rarely voiced such criticism in public. The other rider to partner Vincent and later Kallio was the Italian Roberto Locatelli. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aprilia RS 125 R
The Aprilia RS 125 is a race motorcycle manufactured by Aprilia to race in the Grand Prix motorcycle World Championship, built to replace the old Aprilia AF1. It was debuted in , and it had many upgrades since. The bike won ten World Championship (one rebranded as Derbi and one as Gilera). In 1991 the original tank was 12 liters, which became 13 in 1994 and 14 in 1995; the original carburator was a Dell'Orto VHSB 39, which was upgraded to a Dell'Orto VHSD 41 in 1996 and to a Dell'Orto VHSG 42 in 2006. Since 1996 the brake specification has gone from a single front brake disc 300 mm in carbon steel to a single brake in carbon, with a diameter of 275 mm disc; in 2000 the bike returned to a double disc front braking system . Since 2007, the bike is available in a new version, called RSA 125, for some riders. The RSA has many new details than the previous model, including improvements in the intake system and the engine. The old version, with some updates from the RSA, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motorcycle
A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising, sport (including racing), and off-road riding. Motorcycling is riding a motorcycle and being involved in other related social activity such as joining a motorcycle club and attending motorcycle rallies. The 1885 Daimler Reitwagen made by Gottlieb Daimler and Wilhelm Maybach in Germany was the first internal combustion, petroleum-fueled motorcycle. In 1894, Hildebrand & Wolfmüller became the first series production motorcycle. Globally, motorcycles are comparably popular to cars as a method of transport. In 2021, approximately 58.6 million new motorcycles were sold around the world, fewer than the 66.7 million cars sold over the same period. In 2014, the three top motorcycle producers globally by volume were Honda (28%), Yamaha (17 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
