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GY6 Engine
The GY6 engine design is a four-stroke single-cylinder in a near-horizontal orientation that is used on a number of small motorcycles or scooters made in Taiwan, China, and other southeast Asian countries. It has since become a generic technology. Kymco went on to produce Honda clones such as the Pulsar (CB125), made to Honda standards, as part of their range. Honda's KCW125 (the commercial name in Japan is "Spacy") was modified by Taiwan's Kwang Yang Motor Co., Ltd. (KYMCO), under Honda's consultancy, and became a standard model called the GY6, which various Taiwan makers imitated and minor-changed. Apparently, vehicles of this model were imported from Taiwan by various manufacturers and traders, and spread mainly in the southern coastal regions of China. Configuration The GY6 single is forced-air-cooled, with a chain-driven overhead camshaft and a crossflow hemi cylinder head. Fuel metering is by a single constant-velocity style sidedraft carburetor, typically a Keihin CVK c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-stroke Engine
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing a partial vacuum (negative pressure) in the cylinder through its downward motion. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are closed during this stage. #Combustion: Also known as power or ignition. This is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasted Spark
A wasted spark system is a type of ignition system used in some four-stroke cycle internal combustion engines. In a wasted spark system, the spark plugs fire in pairs, with one plug in a cylinder on its compression stroke and the other plug in a cylinder on its exhaust stroke. The extra spark during the exhaust stroke has no effect and is thus "wasted". This design halves the number of components necessary in a typical ignition system, while the extra spark, against much reduced dielectric resistance, barely impacts the lifespan of modern ignition components. In a typical engine, it requires only about 2–3 kV to fire the cylinder on its exhaust stroke. The remaining coil energy is available to fire the spark plug in the cylinder on its compression stroke (typically about 8 to 12 kV). Advantages Perhaps the most significant advantage of the system, compared to a single coil and distributor systems, is that it eliminates the high-tension distributor. This significantly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moped
A moped ( ) is a type of small motorcycle, generally having a less stringent licensing requirement than full motorcycles or automobiles. Historically, the term exclusively meant a similar vehicle with both bicycle pedals and a motorcycle engine. Mopeds typically travel only slightly faster than bicycles on public roads. Traditional mopeds are distinguishable by their pedals, similar to a bicycle. Some mopeds have a step-through frame design, while others have motorcycle frame designs, including a backbone and a raised fuel tank, mounted directly between the saddle and the head tube. Some resemble motorized bicycles, similar to modern ebikes. Most are similar to a regular motorcycle but with pedals and a crankset that may be used with or instead of motor drive. Although mopeds usually have two wheels, some jurisdictions classify low-powered three- or four-wheeled vehicles (including ATVs and go-kart) as a moped. In some countries, a moped can be any motorcycle with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honda PA50
{{Infobox Motorcycle , name=Honda PA50 , image= , caption= Honda PA50 Hobbit , aka=Hobbit (US)Camino (UK & Europe) , manufacturer= Honda Benelux (Honda Belgium) , production=1976-1991 (UK & Europe)1978-1983 (US) , assembly=Aalst,Belgium , class=Moped , engine={{convert, 49, cc, abbr=on, air-cooled, two-stroke, single , transmission=Automatic clutch single-speed CVT , brakes = Drum, front and rear The Honda PA50 is a moped produced by Honda Benelux between 1976 and 1991. It was marketed as the Honda Hobbit in the US and as the Honda Camino in the UK and Europe. The vehicle itself was manufactured in a factory in Aalst, Belgium, until 1991. Though it has mostly disappeared from the streets of the US and the UK like most mopeds of similar type (e.g. Motobecane, Mobylette, and Puch Maxi), it remains very popular in Belgium, where it is often modified using high performance parts. Models The following models of the Honda PA50 were produced between 1976 and 1991: :*Honda PA50 L Cami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piaggio Ciao
The Piaggio Ciao (''ciao'' means "hi" or "bye" in Italian) is a family of moped produced by Piaggio from 1967 through 2006. Specification It has a rigid rear, and a leading-link front suspension. Some models include a sprung seat-post. The engine and drive-train are cleanly enclosed, similar to Piaggio's scooters. The Ciao uses a belt drive, unlike most other mopeds which are chain driven. Some models have an automatic continuously variable transmission. Braking is by front and rear drums. Power for the lamps, horn, and ignition is from a magneto; there is no battery. However, models with turning signal lights were equipped with a 6-volt battery for the blinkers to function. On newer models, the plastic fuel cap also serves as a measuring cup for the 2% oil-fuel mixture. In some countries, such as Canada in the 1970s, it was branded as the Vespa Ciao. Model variants include: * Ciao SC ''(round saddle rack, saddle and suspension seatpost; light at the rear fender; racks are not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vespa
Vespa () is an Italian brand of scooters and mopeds manufactured by Piaggio. The name means wasp in Italian. The Vespa has evolved from a single model motor scooter manufactured in 1946 by Piaggio & Co. S.p.A. of Pontedera, Italy, to a full line of scooters and one of seven companies today owned by Piaggio. From their inception, Vespa scooters have been known for a painted, pressed steel body which combines, in a unified structure: a full cowling enclosure around the engine concealing dirt or grease, a flat floor panel protecting the feet, and a prominent front fairing to divert wind and rain. History After World War II, in light of its agreement to cease war activities with the Allies, Italy had its aircraft industry severely restricted in both capability and capacity. Piaggio emerged from the conflict with its Pontedera bomber plane plant demolished by bombing. Italy's crippled economy, and the disastrous state of its roads, were not immediately conducive to the re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (mechanics)
A transmission (also called a gearbox) is a mechanical device invented by Louis Renault (industrialist), Louis Renault (who founded Renault, Renault) which uses a gear set—two or more gears working together—to change the speed, direction of rotation, or torque multiplication/reduction in a machine. Transmissions can have a single fixed-gear ratio, multiple distinct gear ratios, or continuously variable ratios. Variable-ratio transmissions are used in all sorts of machinery, especially vehicles. Applications Early uses Early transmissions included the right-angle drives and other gearing in windmills, horse-powered devices, and steam engine, steam-powered devices. Applications of these devices included pumps, mill (grinding), mills and Hoist (device), hoists. Bicycles Bicycles traditionally have used hub gear or Derailleur gear transmissions, but there are other more recent design innovations. Automobiles Since the torque and Horsepower, power output of an interna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrifugal Clutch
A centrifugal clutch is an automatic clutch that uses centrifugal force to operate. The output shaft is disengaged at lower rotational speed and engages as the output increases to a certain speed. It is often used in mopeds, underbones, lawn mowers, go-karts, chainsaws, mini bikes, and some paramotors and boats to keep the internal combustion engine, engine from stalling when the output shaft is slowed or stopped abruptly, and to remove load when starting and idling. It has been superseded for automobile applications by the fluid coupling, torque converter and automated manual transmissions. Operation The input of the clutch is connected to the engine crankshaft while the output may drive a shaft, chain, or belt. As engine revolutions per minute increase, weighted arms in the clutch swing outward and force the clutch to engage. The most common types have friction pads or shoes radially mounted that engage the inside of the rim of a housing. On the center shaft, there is an assorte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuously Variable Transmission
A continuously variable transmission (CVT) is an automated Transmission (mechanical device), transmission that can change through a continuous range of gear ratios, typically resulting in better fuel economy in gasoline applications. This contrasts with other transmissions that provide a limited number of gear ratios in fixed steps. The flexibility of a CVT with suitable control may allow the engine to operate at a constant angular velocity while the vehicle moves at varying speeds. Thus, CVT has a simpler structure, longer internal component lifespan, and greater durability. Compared to traditional automatic transmissions, it offers lower fuel consumption and is more environmentally friendly. CVTs are used in cars, tractors, Side-by-side (vehicle), side-by-sides, motor scooters, snowmobiles, bicycles, and Heavy equipment, earthmoving equipment. The most common type of CVT uses two pulleys connected by a Belt (mechanical), belt or Chain drive, chain; however, several other desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swingarm
A swingarm ( or swinging arm), originally known as a swing fork or pivoted fork, is a single or double sided mechanical device which attaches the rear wheel of a motorcycle to its body, allowing it to pivot vertically. The main component of the rear suspension of most modern motorbikes and ATVs, it holds the rear axle firmly, while pivoting to absorb bumps and suspension loads induced by the rider, acceleration, and braking. Originally motorcycles had no rear suspension, as their frames were little more than stronger versions of the classic diamond frame of a bicycle. Many types of suspension were tried, including Indian's leaf spring suspended swingarm, and Matchless's cantilevered coiled-spring swingarm. Immediately before and after World War II, the plunger suspension, in which the axle moved up and down two vertical posts, became commonplace. In the latter, the movement in each direction was against coiled springs. Some manufacturers, such as Greeves, used swinga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capacitor Discharge Ignition
Capacitor discharge ignition (CDI) or thyristor ignition is a type of automotive electronic ignition system which is widely used in outboard motors, motorcycles, lawn mowers, chainsaws, small engines, gas turbine-powered aircraft, and some cars. It was originally developed to overcome the long charging times associated with high inductance coils used in inductive discharge ignition (IDI) systems, making the ignition system more suitable for high engine speeds (for small engines, racing engines and rotary engines). The capacitive-discharge ignition uses capacitor to discharge current to the ignition coil to fire the spark plugs. History Nikola Tesla The history of the capacitor discharge ignition system can be traced back to the 1890s when it is believed that Nikola Tesla was the first to propose such an ignition system. In first filed February 17, 1897, Tesla writes 'Any suitable moving portion of the apparatus is caused to mechanically control the charging of a condense ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
