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BRM P25
The BRM P25 was a Formula One racing car raced from 1956 to 1960 and the second car produced by the British Racing Motors consortium. After the failure of the complex BRM V16, the P25's design emphasized simplicity. The car was fitted with a 2.5-litre straight-4 engine, producing some 275 horsepower. The P25 would be the foundation of BRM's successes in the late 1950s and early 1960s. Development With BRM in financial trouble after the V16 experiment, Alfred Owen purchased the team and set work on a new car. While the car was being developed, BRM ran a privateer Maserati 250F through the 1954 and 1955 seasons. Stewart Tresilian and Tony Rudd designed an entirely new twin-cam 2.5-litre four-cylinder for the P25. The engine's large bore allowed for larger valves to be fitted. In an exception to keeping with BRM's all-British supply policy, two Weber carburetors were fitted. The engine was mounted to a simple ladder frame steel chassis, with a centre tub monocoque section. The ...
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BRM P25 At Silverstone Classic 2011
British Racing Motors (BRM) was a British Formula One motor racing team. Founded in 1945 and based in the market town of Bourne in Lincolnshire, it participated from 1951 to 1977, competing in 197 grands prix and winning seventeen. BRM won the constructors' title in 1962 when its driver Graham Hill became world champion. In 1963, 1964, 1965 and 1971, BRM came second in the constructors' competition. History BRM was founded just after the Second World War by Raymond Mays, who had built several hillclimb and road racing cars under the ERA brand before the war, and Peter Berthon, a long-time associate. Mays' pre-war successes (and access to pre-war Mercedes-Benz and Auto Union design documents) inspired him to build an all-British grand prix car for the post-war era as a national prestige project, with financial and industrial backing from the British motor industry and its suppliers channelled through a trust fund. This proved to be an unwieldy way of organising and finan ...
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Trailing Arm
A trailing-arm suspension, also referred to as trailing-link, is a form of vehicle suspension. In a motor vehicle it places one or more horizontal arms (or "links") perpendicular to and forward of the axle on the chassis or unibody, which are connected to the axle or wheels with pivot joint(s). These are typically used on the rear axle or wheels of vehicles, but also found in both front and main landing gear of aircraft. A "semi trailing-arm" (or semi trailing-link) is a common form of independent rear suspension on automobiles, particularly those with front wheel drive (where it allows a flatter rear floor pan). Leading arms are similar horizontal arms, perpendicular to the axle, but connecting the wheels to the vehicle structure via pivot joints ''to the rear'' of them. These are typically used on the front axle or wheels, as on the Citroën 2CV and its derivatives, and on the Citroën DS, as well as on the M422 Mighty Mite jeep. Types Trailing-arm Trailing-arm des ...
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BRM P15
The BRM Type 15 was a Formula One racing car of the early 1950s, and the first car produced by British Racing Motors. The car was fitted with a revolutionary and highly complex supercharged 1.5-litre British Racing Motors V16 which produced considerably more power than any of its contemporaries. The distinctive noise of the car made it a favourite with crowds wherever it appeared, but the initial unreliability of the car, its inability to live up to the hype that the project's leading figures had created around it, and the change to Formula Two regulations in 1952 meant the project never achieved the hoped-for level of success on the Grand Prix stage; the car's complexities meant it had a longer development time than its competitors and was not properly competitive until 1953 (3 years after it first raced), where it saw success at non-championship events. Background After the end of the Second World War motor racing slowly returned, based on whatever machinery could be found, la ...
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1956 British Grand Prix
The 1956 British Grand Prix was a Formula One motor race held on 14 July 1956 at Silverstone. It was race 6 of 8 in the 1956 World Championship of Drivers. Classification Qualifying Race ;Notes * – 1 point for fastest lap Shared drives * Car #4: Alfonso de Portago (70 laps) and Peter Collins (30 laps). They shared the 6 points for second place. * Car #3: Eugenio Castellotti (80 laps) and Alfonso de Portago (12 laps). Notes * This race marked the first Formula One podium for a Spanish driver. * This was the first race entry and start for British manufacturer Emeryson. Championship standings after the race ;Drivers' Championship standings *Note: Only the top five positions are included. References {{F1GP 50-59 British Grand Prix British Grand Prix British Grand Prix British Grand Prix The British Grand Prix is a Grand Prix motor racing event organised in the United Kingdom by Motorsport UK. First held by the Royal Automobile Club (RAC) in 1926 Britis ...
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Dunlop Rubber
Dunlop Ltd. (formerly Dunlop Rubber) was a British multinational company involved in the manufacture of various natural rubber goods. Its business was founded in 1889 by Harvey du Cros and he involved John Boyd Dunlop who had re-invented and developed the first pneumatic tyre: he invented the first practical pneumatic tyres for his child's tricycle. It was one of the first multinationals, and under du Cros and, after him, under Eric Geddes, grew to be one of the largest British industrial companies. J. B. Dunlop had dropped any ties to it well before his name was used for any part of the business. The business and manufactory was founded in Upper Stephen Street, Dublin. A plaque marks the site, which is now part of the head office of the Irish multinational departments store brand, Dunnes Stores. Dunlop Rubber failed to adapt to evolving market conditions in the 1970s, despite having recognised by the mid-1960s the potential drop in demand as the more durable radial tyres s ...
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Methanol
Methanol (also called methyl alcohol and wood spirit, amongst other names) is an organic chemical compound and the simplest aliphatic Alcohol (chemistry), alcohol, with the chemical formula (a methyl group linked to a hydroxyl group, often abbreviated as MeOH). It is a light, Volatility (chemistry), volatile, colorless and flammable liquid with a distinctive alcoholic odor similar to that of ethanol (potable alcohol), but is more acutely toxic than the latter. Methanol acquired the name wood alcohol because it was once produced through destructive distillation of wood. Today, methanol is mainly produced industrially by hydrogenation of carbon monoxide. Methanol consists of a methyl group linked to a polar hydroxyl group. With more than 20 million tons produced annually, it is used as a Precursor (chemistry), precursor to other commodity chemicals, including formaldehyde, acetic acid, methyl tert-butyl ether, methyl ''tert''-butyl ether, methyl benzoate, anisole, peroxyacids, ...
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Gasoline
Gasoline ( North American English) or petrol ( Commonwealth English) is a petrochemical product characterized as a transparent, yellowish, and flammable liquid normally used as a fuel for spark-ignited internal combustion engines. When formulated as a fuel for engines, gasoline is chemically composed of organic compounds derived from the fractional distillation of petroleum and later chemically enhanced with gasoline additives. It is a high-volume profitable product produced in crude oil refineries. The ability of a particular gasoline blend to resist premature ignition (which causes knocking and reduces efficiency in reciprocating engines) is measured by its octane rating. Tetraethyl lead was once widely used to increase the octane rating but is not used in modern automotive gasoline due to the health hazard. Aviation, off-road motor vehicles, and racing car engines still use leaded gasolines. Other substances are frequently added to gasoline to improve chemical st ...
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Differential (mechanical Device)
A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others. A common use of differentials is in motor vehicles, to allow the wheels at each end of a drive axle to rotate at different speeds while cornering. Other uses include clocks and analogue computers. Differentials can also provide a gear ratio between the input and output shafts (called the "axle ratio" or "diff ratio"). For example, many differentials in motor vehicles provide a gearing reduction by having fewer teeth on the pinion than the ring gear. History Milestones in the design or use of differentials include: * 100 BCE–70 BCE: The Antikythera mechanism has been dated to this period. It was discovered in 1902 on a shipwreck by sponge divers, and modern research suggests that it used a differential gear to determine the angle between the ecliptic positions of the Sun and Moon, and thus the phase of the Moon. ...
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ZF Friedrichshafen
ZF Friedrichshafen AG, also known as ZF Group, originally ''Zahnradfabrik Friedrichshafen'' (), and commonly abbreviated to ZF, is a Germany, German technology manufacturing company that supplies systems for passenger cars, commercial vehicles and industrial technology. It is headquartered in Friedrichshafen, in the south-west German state of Baden-Württemberg. Specializing in engineering, it is primarily known for its design, research and development, and manufacturing activities in the automotive industry and is one of the largest automotive suppliers in the world. Its products include powertrain, driveline and chassis technology for cars and commercial vehicles, along with specialized plant equipment such as construction equipment. It is also involved in the rail, marine, defense and aviation industries, as well as general industrial applications. ZF has 162 production locations in 31 countries with approximately 168,700 (2023) employees. History The company was founded by ...
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FM Layout
A front-engine, rear-wheel-drive layout (FR), also called Système Panhard is a powertrain layout with an engine in front and rear-wheel-drive, connected via a drive shaft. This arrangement, with the engine straddling the front axle, was the traditional automobile layout for most of the pre-1950s automotive mechanical projects. It is also used in trucks, pickups, and high-floor buses and school buses. Front mid-engine, rear-wheel-drive layout A front mid-engine, rear-wheel-drive layout (FMR) places the engine in the front half of the vehicle but ''behind'' the front axle, which likewise drives the rear wheels via a driveshaft. Shifting the engine's center of mass rearward aids in front/rear weight distribution and reduces the moment of inertia, both of which improve a vehicle's handling. FMR cars are often characterized by a long hood and front wheels that are pushed forward to the corners of the vehicle, close to the front bumper. 2+2-style grand tourers often have FMR layou ...
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Normally Aspirated Engine
A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a turbocharger or a supercharger. Description In a naturally aspirated engine, air for combustion (Diesel cycle in a diesel engine or specific types of Otto cycle in petrol engines, namely petrol direct injection) or an air/fuel mixture (traditional Otto cycle petrol engines), is drawn into the engine's cylinders by atmospheric pressure acting against a partial vacuum that occurs as the piston travels downwards toward bottom dead centre during the intake stroke. Owing to innate restriction in the engine's inlet tract, which includes the intake manifold, a small pressure drop occurs as air is drawn in, resulting in a volumetric efficiency of less than 100 percent—and a less than complete air charge in the cylinder. The density of the air ...
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Inline-four Engine
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout (with the exceptions of the flat-four engines produced by Subaru and Porsche) and the layout is also very common in motorcycles and other machinery. Therefore the term "four-cylinder engine" is usually synonymous with straight-four engines. When a straight-four engine is installed at an inclined angle (instead of with the cylinders oriented vertically), it is sometimes called a slant-four. Between 2005 and 2008, the proportion of new vehicles sold in the United States with four-cylinder engines rose from 30% to 47%. By the 2020 model year, the share for light-duty vehicles had risen to 59%. Design A four-stroke straight-four engine always has a cylinder on its power stroke, unlike engines with fewer cylinders where there is no power st ...
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