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Comstar Wheels
The Comstar wheel, sometimes referred to as Com-stars or stylised as ComStar, was a composite motorcycle wheel that Honda fitted to many of its motorcycles from 1977 to the mid 1980s. Its design allowed it the option of being fitted with tubeless tyres and its use on the Honda CX500 was the first time tubeless tyres had been designed for a production motorcycle. Background The Comstar was Honda's replacement for the tension spoked wheel. Whilst spoked wheels offered a degree of flexibility to help absorb road imperfections, they also required periodic maintenance to ensure correct spoke tension and required the fitment of an inner tube. Honda claimed the Comstar design combined the strength of a cast wheel but allowed a predetermined level of radial flex like spoked wheels. Comstar wheels also allowed the fitment of tubeless tyres which, like other alloy wheels, helped to reduce unsprung mass, although not all models fitted with Comstars had tubeless tyres. Honda debuted Com ...
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Honda NR500
NR500 was a racing motorcycle developed by Honda HRC in 1979 to compete in Grand Prix motorcycle racing. "NR" stands for "New Racing". Model history The motivation behind the NR500 was company founder Soichiro Honda's desire to compete using four-stroke engine technology since the majority of motorcycles manufactured by Honda used four-stroke engines. When the FIM announced new regulations for the 1968 Grand Prix motorcycle racing season that limited the 500 cc engines to four cylinders, this gave an advantage to teams using two-stroke machinery. Honda decided to withdraw from motorcycle racing to concentrate on its automobile division. In November 1977 Honda announced it would be returning to motorcycle Grand Prix racing using four-stroke technology. Even though two-stroke engines dominated motorcycle Grand Prix racing in the late 1970s, Honda felt compelled to race what they sold and thus competed using a high-technology, four-stroke race bike. Since a conventional fou ...
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Motor Cycle News
''MCN'' or ''Motor Cycle News'' is a UK weekly Motorcycle, motorcycling newspaper published by Bauer Verlagsgruppe, Bauer Consumer Media, based in Peterborough, United Kingdom. It claims to be "the world’s biggest weekly motorcycle newspaper". The title was founded in late 1955 as ''Motorcycle News'' by Cyril Quantrill, a former employee of Motor Cycling (magazine), Motor Cycling, and was sold to EMAP in 1956. Bauer bought Emap's consumer media division in 2008. The brand has expanded to include the MCN website, MCN Mobile, iPhone app, the 'MCN Compare' Insurance Comparison service, MCN London and Scottish Motorcycle Show and the MCN Live! at Skegness party weekend. In 2009, average weekly circulation was 114,304 copies according to the Audit Bureau of Circulations (UK), Audit Bureau of Circulations, and 2010 it was 106,446 copies. The figure for 2018 was 56,839. Early years Cyril Quantrill was an employee of ''Motor Cycling'' under famous editor Graham Walker (motorcyc ...
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Hesketh Motorcycles
Hesketh Motorcycles is a British motorcycle manufacturer, initially based in Daventry and Easton Neston, Northamptonshire, England. The company was formed by Alexander, 3rd Lord Hesketh, to develop a prototype in 1980. After two variations of his business had rapidly failed, from 1984 onwards the marque was maintained and improved by Broom Engineering based at Turweston Aerodrome, on the Northamptonshire border with Buckinghamshire, England. The most recent incarnation of the marque from 2013 is based in Kingswood, Surrey, England. Background The project was inspired by Lord Hesketh, who planned to revive the failing British motorcycle industry and at the time had a background of F1 racing being the last private team to win a Formula One Grand Prix, with James Hunt at the wheel. Lord Hesketh wanted to use the skills and facilities built up in that pursuit to greater effect and production of a quality motorcycle was born. The Hesketh motorcycle was developed on the Easto ...
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Road Racing
Road racing is a form of motorsport racing held on a paved road surface. The races can be held either on a closed circuit or on a street circuit utilizing temporarily closed public roads. Originally, road races were held almost entirely on public roads. However, public safety concerns eventually led to most races being held on purpose-built racing circuits. Road racing's origins were centered in Western Europe and Great Britain as motor vehicles became more common in the early 20th century. After the Second World War, automobile road races were organized into a series called the Formula One world championship sanctioned by the Fédération Internationale de l'Automobile (FIA), while motorcycle road races were organized into the Grand Prix motorcycle racing series and sanctioned by the Fédération Internationale de Motocyclisme (FIM). The success and popularity of road racing has seen the sport spread across the globe with Grand Prix road races having been held on six continents ...
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Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties of England, historically part of the West Riding of Yorkshire and some of its southern suburbs were transferred from Derbyshire to the city council. It is the largest settlement in South Yorkshire. The city is in the eastern foothills of the Pennines and the valleys of the River Don, Yorkshire, River Don with its four tributaries: the River Loxley, Loxley, the Porter Brook, the River Rivelin, Rivelin and the River Sheaf, Sheaf. Sixty-one per cent of Sheffield's entire area is green space and a third of the city lies within the Peak District national park. There are more than 250 parks, woodlands and gardens in the city, which is estimated to contain around 4.5 million trees. The city is south of Leeds, east of Manchester, and north ...
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Hesketh Astralite Wheel
Hesketh may refer to: People * Baron Hesketh: the various barons or lords Hesketh, who lived at Easton Neston in Northamptonshire, England ** Lord Hesketh: the Conservative Party politician, formally titled Alexander Fermor-Hesketh, 3rd Baron Hesketh *** Hesketh Racing: the 1970s Formula One racing team, formed by Alexander Hesketh *** Hesketh Motorcycles: the motorcycle brand, formed by Alexander Hesketh * Chris Hesketh, English rugby league footballer * Kenneth Hesketh, British composer * Jake Hesketh, English association footballer * Karne Hesketh, New Zealand-born Japanese rugby player * Philip Hesketh, British Anglican priest and current Dean of Rochester * Sean Hesketh, English rugby league footballer * Thomas Hesketh, English politician * Victoria Hesketh, English musician better known by her stage name Little Boots Places * Hesketh, Alberta: a Canadian hamlet * Hesketh Bank: a small agricultural village in Lancashire Etymology The name came, as a placename, from Old Norse ' ...
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Honda CB250N/CB400N
The Honda CB250N and CB400N Super Dream are motorcycles manufactured by the Honda Motor Company from 1978 to 1986. The successor to the short lived Dream model, it had a series of revisions including a six-speed transmission and what Honda termed as European styling which resembled the CB750F and CB900F. It was a popular model for Honda with 70,000 bikes sold in the UK alone. Engine The Super Dream was fitted with a four stroke, air-cooled, twin-cylinder engine. It had three valves per cylinder, two inlet and one exhaust, operated by a chain-driven overhead camshaft. Ignition was provided by capacitor discharge ignition (CDI). It had a 360° crank layout similar to many traditional British parallel twins, but with two balance shafts to reduce unwanted vibrations. It used a six-speed transmission and chain final drive. Fuelling was provided by twin Keihin carburettors A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control ...
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Honda CBX
The Honda CBX sports motorcycle was manufactured by Honda from 1978 to 1982. With a 1047cc inline six-cylinder engine producing , it was the flagship of the Honda range. The CBX was well-received by the press, but was outsold by its sibling introduced in late 1979, the Honda CB900F. Engine characteristics Honda had produced a Honda RC series six-cylinder race bike in the mid-1960s, but the CBX was Honda's first production 6 cylinder road bike with this GP racing engine technology. The CBX's advanced DOHC 24-valve inline six-cylinder engine was its outstanding feature; but in other respects the bike was conventional, having telescopic forks, a tubular frame, twin rear shocks and straight handlebars. Although bulky, it was only two inches wider than a CB750. The width across the crankshaft was relatively narrow as the CBX had a stacked engine accessory arrangement, whereby the alternator and ignition items were positioned behind the cylinder block. This arrangement produced an ...
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Steel
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carbon, other ...
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Aluminium-alloy
An aluminium alloy (or aluminum alloy; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable. About 85% of aluminium is used for wrought products, for example rolled plate, foils and extrusions. Cast aluminium alloys yield cost-effective products due to the low melting point, although they generally have lower tensile strengths than wrought alloys. The most important cast aluminium alloy system is Al–Si, where the high levels of silicon (4–13%) contribute to give good casting characteristics. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.I. J. Polmear, ''Light Alloys'', Arnold, 1995 Alloys c ...
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Extrusion
Extrusion is a process used to create objects of a fixed cross-sectional profile by pushing material through a die of the desired cross-section. Its two main advantages over other manufacturing processes are its ability to create very complex cross-sections; and to work materials that are brittle, because the material encounters only compressive and shear stresses. It also creates excellent surface finish and gives considerable freedom of form in the design process. Drawing is a similar process, using the tensile strength of the material to pull it through the die. It limits the amount of change that can be performed in one step, so it is limited to simpler shapes, and multiple stages are usually needed. Drawing is the main way to produce wire. Metal bars and tubes are also often drawn. Extrusion may be continuous (theoretically producing indefinitely long material) or semi-continuous (producing many pieces). It can be done with hot or cold material. Commonly extruded materials ...
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