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Preselector Gearbox
A preselector gearbox is a type of manual transmission mostly used on passenger cars and racing cars in the 1930s, in buses from 1940–1960 and in armoured vehicles from the 1930s to the 1970s. The defining characteristic of a preselector gearbox is that the gear shift lever allowed the driver to "pre-select" the next gear, usually with the transmission remaining in the current gear until the driver pressed the "gear change pedal" at the desired time. The design removed the need for the driver to master the timing of using a clutch pedal and shift lever in order to achieve a smooth shift in a non-synchromesh manual transmission. Most pre-selector transmissions avoid a driver-controlled clutch entirely. Some use one solely for starting from a standstill. Preselector gearboxes were most common prior to the widespread adoption of the automatic transmission, so they were considered in comparison to the " crash gearbox" type of manual transmission. Preselector gearboxes were often m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daimler Fifteen Interior 5680749280
Daimler is a German surname. It may refer to: People * Gottlieb Daimler (1834–1900), German inventor, industrialist and namesake of a series of automobile companies * Adolf Daimler (1871–1913), engineer and son of Gottlieb Daimler * Paul Daimler (1869–1945), engineer and son of Gottlieb Daimler Places * Mount Daimler, a peak in Antarctica named after Gottlieb Daimler Companies Germany * Daimler AG, the past name of the Mercedes-Benz Group from 2007 to 2022, known to the public as Mercedes-Benz, formerly known as Daimler-Benz AG (1926–1998) and DaimlerChrysler AG (1998–2007) ** Daimler Mobility, banking and credit/debit card services subsidiary renamed as Mercedes-Benz Mobility in 2022. * Daimler Truck, demerged in 2021 ** Daimler Buses, formerly EvoBus ** Daimler Truck North America, formerly Freightliner Corporation, Portland, Oregon ** Daimler India Commercial Vehicles, a subsidiary based in Chennai, India ** Daimler Buses North America, subsidiary in Greensboro, Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-Changing Gears
Self-Changing Gears was a British company, set up and owned equally by Walter Gordon Wilson and John Davenport Siddeley, to develop and exploit the Wilson or pre-selector gearbox. Self-Changing Gears designed, built and licensed transmissions for various applications including light and heavy road vehicles, military, marine, and rail vehicles as well as motor racing cars. Ownership changes Following the death of Walter Wilson in 1957, his son A Gordon Wilson took over the running of the company until his retirement in 1965. The original company Improved Gears Ltd was incorporated on 28 December 1928, and this later became Self-Changing Gears (SCG). The company moved a number of times in the early years, and in 1938 settled in premises at Lythalls Lane, Coventry. During World War II, additional premises were used at Burbage, Leicestershire. In 1935, Siddeley sold his interests in Armstrong Siddeley (including Self-Changing Gears) to Hawker Aircraft forming Hawker Siddeley. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edgar De Normanville
Captain Edgar Joseph de Normanville R.E. (1882–1968) was a British engineer who became a successful inventor and a technical journalist. Biography Born 13 October 1882 in Leamington Spa, the eldest son of William de Normanville (1843–1928), a civil engineer, and his wife born Elizabeth Simonds he was educated at Ampleforth College and completed an engineering apprenticeship. Journalist Fascinated by the development of motor vehicles he joined the editorial staff of the weekly motoring magazine ''The Motor'' in 1908. Following service with the Royal Engineers in the first world war he became motoring correspondent of ''The Daily Express'' and later '' The Chronicle''.Capt E. J. De Normanville. ''The Times'', Friday, Jan 19, 1968; pg. 10; Issue 57153 Laycock-de Normanville He designed an epicyclic four-speed gearbox produced by Humber during the 1930s but is best known for his epicyclic overdrive manufactured from the 1940s by Sheffield Sheffield is a city in Sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humber Limited
Humber Limited was a British manufacturer of bicycles, motorcycles, and cars, incorporated and listed on the stock exchange in 1887. It took the name "Humber & Co Limited" because of the high reputation of the products of one of the constituent businesses that had belonged to Thomas Humber. A financial reconstruction in 1899 transferred its business to Humber Limited. From an interest in motor vehicles beginning in 1896, the motor division became much more important than the cycle division and the cycle trade marks were sold to Raleigh in 1932. The motorcycles were withdrawn from sale during the depression of the 1930s. Humber is now a dormant marque for automobiles as well as cycles. Following their involvement in Humber through Hillman in 1928 the Rootes brothers acquired 60 per cent of Humber's ordinary capital, sufficient for a controlling interest. The two Rootes brothers joined the Humber board in 1932 and began to make Humber the holding company for vehicle manufacturin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Clutch
Electromagnetic clutches operate electrically but transmit torque mechanically. This is why they used to be referred to as electro-mechanical clutches. Over the years, EM became known as electromagnetic versus electro-mechanical, referring more about their actuation method versus physical operation. Since the clutches started becoming popular over 60 years ago, the variety of applications and clutch designs has increased dramatically, but the basic operation remains the same today. Single-face clutches make up approximately 90% of all electromagnetic clutch sales. Electromagnetic clutches are most suitable for remote operation since no mechanical linkages are required to control their engagement, providing fast, smooth operation. However, because the activation energy dissipates as heat in the electromagnetic actuator when the clutch is engaged, there is a risk of overheating. Consequently, the maximum operating temperature of the clutch is limited by the temperature rating of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1954 Salmson 2300S Coupé, Dashboard
Events January * January 3 – The Italian broadcaster RAI officially begins transmitting. * January 7 – Georgetown–IBM experiment: The first public demonstration of a machine translation system is held in New York, at the head office of IBM. * January 10 – BOAC Flight 781, a de Havilland Comet jet plane, disintegrates in mid-air due to metal fatigue, and crashes in the Mediterranean near Elba; all 35 people on board are killed. * January 12 – Avalanches in Austria kill more than 200. * January 15 – Mau Mau leader Waruhiu Itote is captured in Kenya. * January 17 – In Yugoslavia, Milovan Đilas, one of the leading members of the League of Communists of Yugoslavia, is relieved of his duties. * January 20 – The US-based National Negro Network is established, with 46 member radio stations. * January 21 – The first nuclear-powered submarine, the , is launched in Groton, Connecticut, by First Lady of the United States Mamie Eisenh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delahaye MS 135 MS, Bj
Delahaye was a family-owned automobile manufacturing company, founded by Émile Delahaye in 1894 in Tours, France. Manufacturing was moved to Paris following incorporation in 1898 with two marriage-related brothers-in-law, George Morane and Leon Desmarais, as Emile Delahaye's equal partners. The company built a low volume line of limited production luxury cars with coachbuilt bodies; trucks; utility and commercial vehicles; buses; and fire-trucks. Delahaye made a number of technical innovations, particularly in its early years. After establishing a racing department in 1932, the company came to prominence in France in the mid-to-late 1930s, first with the International record-breaking Type 138; then, the Type 135 that famously evolved into the special short-wheelbase sports-racing Type 135CS; followed by the V12 types 145 and 155 racecars. Many races were won, and records set. The company faced setbacks due to the Second World War, and was taken over by amalgamation with arch com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicyclic Gearing
An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the centers of the two gears and rotates, to carry the planet gear(s) around the sun gear. The planet and sun gears mesh so that their pitch circles roll without slip. If the sun gear is held fixed, then a point on the pitch circle of the planet gear traces an epicycloid curve. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of an outer gear ring, or ring gear, sometimes called an ''annulus gear''. Such an assembly of a planet engaging both a sun gear and a ring gear is called a planetary gear train.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University Press, New York.B. Paul, 1979, ''Kinematics and Dynamics of Planar Machinery'', Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Close-ratio Gearbox
A close-ratio transmission describes a motor vehicle transmission (mechanics), transmission with a smaller than average difference between the gear ratios. They are most often used on sports cars in order to keep the engine in the power band. Overview A close-ratio transmission is one which is described relative to another transmission for the same vehicle model. The relativity applies only for the transmissions offered for a single make and model; that is, there is no specific threshold value or accepted industry standard that determines whether the steps between gears constitute a normal or close-ratio transmission. What one manufacturer describes as a close-ratio transmission is not necessarily closer in ratios than another manufacturer's normal manual transmission. Often, manufacturers use the term "close-ratio" when offering one or more alternatives to the transmission fitted as standard equipment: for example, an optional, sportier transmission which offers closer ratios tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cone Clutch
A cone clutch serves the same purpose as a disk or plate clutch; however, instead of mating two spinning disks, the cone clutch uses two conical surfaces to transmit torque by friction. The cone clutch transfers a higher torque than plate or disk clutches of the same size due to the wedging action and increased surface area. Cone clutches are generally now only used in low-peripheral-speed applications, although they were once common in automobiles and other internal combustion engine transmissions. They are usually now confined to very specialist transmissions used in racing, rallying, or extreme off-road vehicles, although they are common in power boats, dredge pumps and other ship-drive lines. This is because the clutch does not have to be pushed in all the way, which allows the gears to be changed more quickly. Small cone clutches are used in synchronizer mechanisms in manual transmissions and some limited-slip differential A limited-slip differential (LSD) is a type of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Racing Automobiles
English Racing Automobiles (ERA) was a British racing car manufacturer active from 1933 to 1954. Prewar history ERA was founded by Humphrey Cook, Raymond Mays, and Peter Berthon in November 1933 and established in Bourne, Lincolnshire, next to Eastgate House, the family home of Raymond Mays between Eastgate and Spalding Road. Their ambition was to manufacture and campaign a team of single seater racing cars capable of upholding British prestige in Continental European racing. With the cost of full Grand Prix racing prohibitive, they instead aimed ERA's efforts at the smaller voiturette—1500cc supercharged—class of motor racing, the Formula 2 equivalent of the day. Humphrey Cook financed the operation—using the wealth from the family drapery business, Cook, Son & Co., of St Paul's Churchyard, London. Berthon was responsible for the overall design of the cars, while Mays became its principal driver—having already successfully raced several other makes including Vauxha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clutch
A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does the work. In a motor vehicle, the clutch acts as a mechanical linkage between the engine and transmission. By disengaging the clutch, the engine speed (RPM) is no longer determined by the speed of the driven wheels. Another example of clutch usage is in electric drills. The clutch's input shaft is driven by a motor and the output shaft is connected to the drill bit (via several intermediate components). The clutch allows the drill bit to either spin at the same speed as the motor (clutch engaged), spin at a lower speed than the motor (clutch slipping) or remain stationary while the motor is spinning (clutch disengaged). Types Dry clutch A ''dry clutch'' uses dry friction to transfer power from the input shaft to the output shaft, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
