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MV Agusta 175 Series
The MV Agusta 175 were a series of motorcycles produced by the Italian manufacturer MV Agusta from 1953 to 1960. The series included touring, GT (Gran Turismo), sports and supersports models. There were also two racing variants. Because of the shape of the petrol tank, the sports and supersport models became known as the ''Disco Volante'' (Flying Saucer). The series was MV's best seller. Development and Technology The MV Agusta 175 was launched at the EICMA (Milan Motorcycle Show) in 1952, with production starting in 1953. For MV Agusta, this motorcycle was a milestone. It was their first production machine with a four-stroke engine. The unit construction single-cylinder engine was designed with an overhead camshaft for high performance. The chain-driven camshaft operated the valves via rocker arms, which were closed by hairpin valve springs. The engine was inclined forward at 10° and manufactured in alloy and a bore and stroke of 59.5 mm × 62 mm. The cycle parts ...
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MV Agusta
MV Agusta (, full name: MV AGUSTA Motor S.p.A., original name: Meccanica Verghera Agusta or MV) is an Italian high end motorcycle manufacturer. It was founded by Domenico Agusta, Count Domenico Agusta on 19 January 1945 as one of the branches of the Agusta aircraft company near Milan in Cascina Costa. The abbreviation MV stands for ''Meccanica'' (mechanics) ''Verghera'', the hamlet where the first MVs were made. The modern headquarters and main production facilities are located in Varese, Italy on the shore of Lake Varese. History 1943–1945: From idea to mass production The genesis of the Agusta company came in the early 20th century. Count Giovanni Agusta left Sicily for northern Italy, where he built his first aircraft, the AG.1, four years after the Wright brothers had made history in the US. The First World War, which demonstrated the prospects of aviation, prompted Agusta to be decisive. In 1923, in the town of Samarate, he founded the Costruzioni Aeronautiche Giovanni ...
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Motorcycle Frame
A motorcycle frame is a motorcycle's core structure. It supports the engine, provides a location for the steering and motorcycle suspension, rear suspension, and supports the rider and any passenger or luggage. Also attached to the frame are the fuel tank and battery. At the front of the frame is found the steering head tube that holds the Swivel, pivoting Motorcycle fork, front fork, while at the rear there is a hinge, pivot point for the swingarm suspension motion. Some motorcycles include the engine as a load-bearing stressed member; while some other bikes do not use a single frame, but instead have a front and a rear subframe attached to the engine. Materials In the early days, motorcycles were little more than motorised bicycles, and consequently frames were tubular steel. While the use of steel tubing is still common, in modern times other materials, such as titanium, aluminium, magnesium, and carbon-fibre, along with composites of these materials, are now used. As differen ...
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Cylinder Head
In a piston engine, the cylinder head sits above the cylinders, forming the roof of the combustion chamber. In sidevalve engines the head is a simple plate of metal containing the spark plugs and possibly heat dissipation fins. In more modern overhead valve and overhead camshaft engines, the head is a more complicated metal block that also contains the inlet and exhaust passages, and often coolant passages, valvetrain components, and fuel injectors. Number of cylinder heads A piston engine typically has one cylinder head per bank of cylinders. Most modern engines with a "straight" (inline) layout today use a single cylinder head that serves all the cylinders. Engines with a "V" layout or "flat" layout typically use two cylinder heads (one for each cylinder bank), however a small number of 'narrow-angle' V engines (such as the Volkswagen VR5 and VR6 engines) use a single cylinder head spanning the two banks. Most radial engines have one head for each cylind ...
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Dynamo
"Dynamo Electric Machine" (end view, partly section, ) A dynamo is an electrical generator that creates direct current using a commutator. Dynamos employed electromagnets for self-starting by using residual magnetic field left in the iron cores of electromagnets (i.e. field coils). If dynamo were never run before it was usual to use a separate battery to excite or ''flash the field'' of the electromagnets to enable self-starting. Dynamos were the first practical electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. Today, the simpler and more reliable alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using rectifiers (such as va ...
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Avello (motorcycle)
Avello was a Spanish manufacturer of machine tools, motorcycles and scooters, famous for its MV Agusta and Puch brand machines. It was founded by Alfredo Avello in 1940 and closed in March 2013. The factory was in the city of Gijón in Asturias, northern Spain. MV Avello Basque industrial engineer, Alfredo Avello purchased an existing company in the Natahoyo neighbourhood of Gijón that produced machinery and machine tools on June 1, 1940, changing the name to ''Avello y Compañía SL.'' MV Augusta had been producing machine for local sale in Barcelona since 1949, branded MV Alpha. At a race held in Gijón, Avello approached MV's Spanish promoters and convinced them to transfer manufacture of the machines to his factory. In 1951, the first production machines came out of the factory, a 125 cc two-stroke. The Italian parent company became involved and a range of machines based on 125 & 150 cc engines were designed. The machines were sold under the MV Avello brand. To support the ...
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Fuel Tank
A fuel tank (also called a petrol tank or gas tank) is a safe container for Flammability, flammable fluids, often gasoline or diesel fuel. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine system in which the fuel is stored and propelled (Fuel pump (engine), fuel pump) or released (pressurized gas) into an engine. Fuel tanks range in size and complexity from the small plastic tank of a butane lighter (fire starter), lighter to the multi-chambered Cryogenics, cryogenic Space Shuttle external tank. Uses Typically, a fuel tank must allow or provide the following: * Storage of fuel: the system must contain a given quantity of fuel and must avoid leakage and limit evaporative emissions. * Filling: the fuel tank must be filled in a secure way, without sparks. * Provide a method for determining level of fuel in tank, fuel gauge, gauging (the remaining quantity of fuel in the tank must be measured or evaluated). * Venting (if ove ...
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Motorcycle Handlebar
A motorcycle handlebar is a tubular component of a motorcycle's steering mechanism. Handlebars provide a mounting place for controls such as brake, throttle, clutch, Klaxon, horn, light switches and rear view mirrors; and they help to support part of the rider's weight. Even when a handlebar is a single piece it is usually referred to in the plural as handlebars. Construction Handlebars are made from round-section metal tubing, typically aluminium alloys or Chrome plating, chrome plated steel but also of carbon fibre and titanium, shaped to the desired contour. Holes may be drilled for the internal routing of control cables such as brake, throttle, and clutch. Risers hold the handlebars above their mounting position on the Motorcycle fork#Triple tree, upper triple clamp or the top of the Motorcycle fork, fork, and may be integrated into the bar itself or separate items. Each handlebar end may contain bar-end weights to damp Bicycle and motorcycle dynamics#In motorcycles, vibrat ...
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Motorcycle Saddle
A motorcycle seat (sometimes saddle) is where rider sits, and may also accommodate a passenger. The most common type of motorcycle seat is a dual saddle or bench seat, which runs along the top of the chassis and is long enough for a pillion passenger to straddle the motorcycle behind the rider. Two detached seats, rather than one elongated one, were more common until the mid 20th century. A single, or solo, seat is only large enough for the rider. They are typical of racing, off-road, and many historic motorcycles. In motorcycle trials, the bikes have no seating at all, as the rider remains standing on the footpegs for the entire competition. The ideal motorcycle seat will vary according to the preferences and body type of the rider. Motorcycle seats are typically narrow and this may pose challenges for wider individuals. File:Dual-saddles.jpg, Separated rider and passenger seats on a 1969 BMW motorcycle File:Rt-saddle.jpg, Modern seats on a 2007 BMW R1200RT File:Hockenheimrin ...
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Pushrod
A valvetrain is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. The intake valves control the flow of air/fuel mixture (or air alone for direct-injected engines) into the combustion chamber, while the exhaust valves control the flow of spent exhaust gases out of the combustion chamber once combustion is completed. Layout The valvetrain layout is largely dependent on the location of the camshaft. The common valvetrain configurations for piston engines, in order from oldest to newest, are: * Flathead engine: A single camshaft and the valves are located in the engine block below the cylinder or cylinder bank. * Overhead valve engine: A single camshaft remains in the block below the cylinder(s), however the valves are located in the cylinder head above the combustion chamber. * Overhead camshaft engine: Both the valves and one or more camshafts are located in the cylinder head above the cylinders or cylinder banks. ...
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Italian Lira
The lira ( , ; : lire, , ) was the currency of Italy between 1861 and 2002. It was introduced by the Kingdom of Italy (Napoleonic), Napoleonic Kingdom of Italy in 1807 at par with the French franc, and was subsequently adopted by the different states that would eventually form the Kingdom of Italy in 1861. It was subdivided into 100 ''centesimi'' (: ''centesimo''), which means "hundredths" or "cents". The lira was also the currency of the Albanian Kingdom (1939-1943), Albanian Kingdom from 1941 to 1943. The term originates from ''libra'', the largest unit of the Carolingian monetary system used in Western Europe and elsewhere from the 8th to the 20th century. The Carolingian system is the origin of the French ''livre tournois'' (predecessor of the franc), the Italian lira, and the Pound (currency), pound unit of Pound sterling, sterling and related currencies. In 1999, the euro became Italy's unit of account and the lira became a national subunit of the euro at a rate of €1 = ...
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Earles Fork
A motorcycle fork connects a motorcycle's front wheel and axle to its frame, typically via a yoke, also known as a triple clamp, or triple tree, which consists of an upper yoke joined to a lower yoke via a steering stem, a shaft that runs through the steering head, creating the steering axis. Most forks incorporate the front suspension and front brake, and allow the front wheel to rotate about the steering axis so that the motorcycle may be steered. Most handlebars attach to the top clamp in various ways, while clip-on handlebars clamp to the fork tubes, either just above or just below the upper triple clamp. The fork and its attachment points on the frame establish the critical geometric parameters of rake and trail, which play a major role in defining how a motorcycle handles and dives during braking. While the standard telescopic fork arrangement is found with few major differences among mainstream street motorcycles since the 1970s, historically there have been many varia ...
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Carburetor
A carburetor (also spelled carburettor or carburetter) is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the Venturi effect or Bernoulli's principle or with a Pitot tube in the main metering circuit, though various other components are also used to provide extra fuel or air in specific circumstances. Since the 1990s, carburetors have been largely replaced by fuel injection for cars and trucks, but carburetors are still used by some small engines (e.g. lawnmowers, generators, and concrete mixers) and motorcycles. In addition, they are still widely used on piston-engine–driven aircraft. Diesel engines have always used fuel injection instead of carburetors, as the compression-based combustion of diesel requires the greater precision and pressure of fuel injection. Etymology The term ''carburetor'' is derived from the verb ''carburet'', which means "to ...
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