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Bultaco Records
Bultaco was a Spanish manufacturer of two-stroke motorcycles from 1958 to 1983. In May 2014, a new Bultaco was announced. Origins The origin of the Bultaco motorcycle company dates from May 1958. Francesc "Paco" Bultó was a director of the Montesa motorcycle company, founded in 1944. After several years of steady growth and road racing success, in 1957 Montesa moved to larger facilities. The move was protracted, disrupting production and was followed by a downturn in the Spanish economy. This slump brought to a head disagreements between Bultó and the other senior director Pere Permanyer. As an economy measure, Permanyer (the majority shareholder) felt that the company should withdraw from racing. Bultó, the driving force behind the racing program and responsible for much of the company’s technical expertise was vehemently opposed. Failing to reach a compromise, Bultó decided to leave Montesa to concentrate on his other business interests. Perhaps unsurprisingly, the ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barcelona
Barcelona ( , , ) is a city on the coast of northeastern Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second most populous municipality of Spain. With a population of 1.6 million within city limits,Barcelona: Población por municipios y sexo – Instituto Nacional de Estadística. (National Statistics Institute) its urban area extends to numerous neighbouring municipalities within the and is home to around 4.8 million people, making it the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bultaco Engine Detail
Bultaco was a Spanish manufacturer of two-stroke motorcycles from 1958 to 1983. In May 2014, a new Bultaco was announced. Origins The origin of the Bultaco motorcycle company dates from May 1958. Francesc "Paco" Bultó was a director of the Montesa motorcycle company, founded in 1944. After several years of steady growth and road racing success, in 1957 Montesa moved to larger facilities. The move was protracted, disrupting production and was followed by a downturn in the Spanish economy. This slump brought to a head disagreements between Bultó and the other senior director Pere Permanyer. As an economy measure, Permanyer (the majority shareholder) felt that the company should withdraw from racing. Bultó, the driving force behind the racing program and responsible for much of the company’s technical expertise was vehemently opposed. Failing to reach a compromise, Bultó decided to leave Montesa to concentrate on his other business interests. Perhaps unsurprisingly, the ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MotoGP
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] |
Industrial Unrest
A labour revolt or worker's uprising is a period of civil unrest characterised by strong labour militancy and strike activity. The history of labour revolts often provides the historical basis for many advocates of Marxism, communism, socialism and anarchism, with many instances occurring around the world in both the 19th and 20th centuries. Labour revolts in France The Canut Revolts in Lyons, France, were the first clearly defined worker uprisings of the Industrial Revolution. The First occurred in November 1831 and was followed by later revolts in 1834 and 1848. Following the closure of the national workshops after the 1848 revolution in Paris, there was an uprising in Paris involving 100,000 insurgents involved in a three-day battle with the army, volunteers and reserve forces. The Paris Commune in France (1871) is hailed by both anarchists and Socialists as the first assumption of power by the working class, but controversy of the policies implemented in the Commune helped the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gasoline
Gasoline (; ) or petrol (; ) (see ) is a transparent, petroleum-derived flammable liquid that is used primarily as a fuel in most spark-ignited internal combustion engines (also known as petrol engines). It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. On average, U.S. refineries produce, from a barrel of crude oil, about 19 to 20 gallons of gasoline; 11 to 13 gallons of distillate fuel (most of which is sold as diesel fuel); and 3 to 4 gallons of jet fuel. The product ratio depends on the processing in an oil refinery and the crude oil assay. A barrel of oil is defined as holding 42 US gallons, which is about 159 liters or 35 imperial gallons. The characteristic of a particular gasoline blend to resist igniting too early (which causes knocking and reduces efficiency in reciprocating engines) is measured by its octane rating, which is produced in several grades. Tetraethyl lead and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Cooled
Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non-toxic; however, it can contain impurities and cause corrosion. Water cooling is commonly used for cooling automobile internal combustion engines and power stations. Water coolers utilising convective heat transfer are used inside high-end personal computers to lower the temperature of CPUs. Other uses include the cooling of lubricant oil in pumps; for cooling purposes in heat exchangers; for cooling buildings in HVAC and in chillers. Mechanism Advantages Water is inexpensive, non-toxic, and available over most of the earth's surface. Liquid cooling offers higher thermal conductivity than air cooling. Water has unusually high specific heat capacity among commonly available liquids at room temperature and atmospheric pressure allowing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air-cooled Engine
Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. In all combustion engines, a great percentage of the heat generated (around 44%) escapes through the exhaust, not through the metal fins of an air-cooled engine (12%). About 8% of the heat energy is transferred to the oil, which although primarily meant for lubrication, also plays a role in heat dissipation via a cooler. ''Air-cooled engines'' are used generally in applications which would not suit liquid cooling, as such modern air-cooled engines are used in motorcycles, general aviation aircraft, lawn mowers, generators, outboard motors, pump sets, saw benches and auxiliary power units. Introduction Most modern internal combustion engines are cooled by a closed circuit carrying liquid coolant through channels in the engine block and cylinder head, where the coolant absorbs heat, to a heat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single Cylinder Engine
A single-cylinder engine, sometimes called a thumper, is a piston engine with one cylinder. This engine is often used for motorcycles, motor scooters, go-karts, all-terrain vehicles, radio-controlled vehicles, portable tools and garden machinery (such as lawnmowers, cultivators, and string trimmers). Single-cylinder engines are made both as 4-strokes and 2-strokes. Characteristics Compared with multi-cylinder engines, single-cylinder engines are usually simpler and compact. Due to the greater potential for airflow around all sides of the cylinder, air cooling is often more effective for single cylinder engines than multi-cylinder engines. This reduces the weight and complexity of air-cooled single-cylinder engines, compared with liquid-cooled engines. Drawbacks of single-cylinder engines include a more pulsating power delivery through each cycle and higher levels of vibration. The uneven power delivery means that often a single-cylinder engine requires a heavier flywheel than a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Motorcycle Trials Champions
The FIM Trial World Championship and FIM X-Trial World Championship are the most prestigious motorcycle trials tournaments of the world, organised by the Fédération Internationale de Motocyclisme. The outdoor championship is held since 1964 and the indoor (X-Trial) since 1993. From 1964 to 1967 the championship was named Challenge Henry Groutards. From 1968 to 1974, it was the Trial European Championship, and from 1975 onwards it has been known as the World Championship. Up until 2010, the outdoor world trial championship has been won by 6 different pilots from the UK, 5 from Spain, 2 from Finland and France, and 1 from Belgium, Germany, United States, Japan and Sweden. Since 2005, only Spanish pilots have won the outdoor and the indoor world trial championships. World Trials Champions "Note: Green background denotes International Trial Master Championship." "Note: Pink background denotes European Championship." Championships per rider As of September 2022, the followi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scottish Six Days Trial
The Scottish Six Days Trial is an internationally recognised Motorcycle trials competition, which has been running since 1909 (with breaks for the two world wars) making it the oldest motorcycle trials event in the world. Motorcycle riders from all over the world compete in this extreme sport, covering as much as 100 miles a day on road and off-road routes around Lochaber on each of the six days. The event is a trial of the skill, consistency and endurance of the riders, as well as a test of the specialised motorcycles used. History The inaugural Scottish motorcycle trial was held in July 1909 and was a five-day event devised by Campbell McGregor of the Edinburgh Motor Cycle Club. ''The Classic Motor Cycle'' July 1996, p.43 ''75 Years Ago'' Accessed and added 27 June 2014 Originally, the trial started in Edinburgh, going to John O'Groats before returning to Edinburgh. It aimed to be the most challenging motorcycle trial ever held. The Edinburgh & District Club organised the event ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sammy Miller
Samuel Hamilton Miller, MBE (born 11 November 1933) is a Northern Irish championship winning motorcycle racer, in both road racing and trials. He was appointed an MBE in the 2009 New Year Honours. In 2013, Miller was named an FIM Legend for his motorcycling achievements. Career Miller was born in Belfast, Northern Ireland. After attending his first race at the age of 16 in 1951, he followed a career involving both road, dirt/grass track racing and observed trials. Miller became British Trials Champion 11 times and won the European Trials Championship twice. In his continuing career, Miller is a winner of over 1,300 trials, nine gold medals and the International Six Days Trial, as well as coming 3rd in the 1957 250cc Grand Prix in championship. In racing he rode a variety of machines including AJS 7R, Mondial and NSU. Miller has won three 250cc North West 200 events (1956-1958). Miller rode mainly Ariel Motorcycles, including both trials events and the Isle of Man TT races ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-stroke
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 vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #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 close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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