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Half-track
A half-track is a civilian or military vehicle with regular wheels at the front for steering and continuous tracks at the back to propel the vehicle and carry most of the load. The purpose of this combination is to produce a vehicle with the cross-country capabilities of a tank and the handling of a wheeled vehicle. Performance The main advantage of half-tracks over wheeled vehicles is that the tracks reduce the pressure on any given area of the ground by spreading the vehicle's weight over a larger area, which gives it greater mobility over soft terrain like mud and snow, while they do not require the complex steering mechanisms of fully tracked vehicles, relying instead on their front wheels to direct the vehicle, augmented in some cases by track braking controlled by the steering wheel. It is not difficult for someone who can drive a car to drive a half-track, which is a great advantage over fully tracked vehicles, which require specialized training. Half-tracks thus facil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kégresse Track
A Kégresse track is a kind of rubber or canvas continuous track which uses a flexible belt rather than interlocking metal segments. It can be fitted to a conventional car or truck to turn it into a half-track, suitable for use over rough or soft ground. Conventional front wheels and steering are used, although skis may also be fitted. A snowmobile is a smaller ski-only type. Technology The Kégresse propulsion and suspension system incorporates an articulated bogie, fitted to the rear of the vehicle with a large drive wheel at one end, a large unpowered idler wheel at the other, and several small guide wheels in between, over which run a reinforced flexible belt. The belt is fitted with metal or rubber treads to grip the ground. It differs from conventional track systems by using a flexible belt rather than interlocking metal segments. Use in Russia The name comes from the system's inventor Adolphe Kégresse, who designed the original while working for Tsar Nicholas II of Russi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolphe Kégresse
Adolphe Kégresse (1879, Héricourt, Haute-Saône - 1943) was a French military engineer who invented the half-track and dual clutch transmission. Born at Héricourt, and educated in Montbéliard, he moved in 1905 to Saint Petersburg, Russia to work for the Russian Tsar Nicholas II. To improve the mobility of the imperial car park, he invented the Kégresse track to modify normal motor vehicles into half-tracks. He was also a personal chauffeur of Tsar Nicholas II and the Head of the Mechanical Department of the Russian Imperial Garage at Tsarskoye Selo. The Aide-de-camp to Tsar Nicholas II, Prince Orlov wrote in a letter to the Tsar's Minister of the Court on May 15, 1914: "... I consider Kégresse an irreplaceable worker and I am afraid his leaving will be a great loss for the garage. Your Highness knows, of course, how much His Majesty appreciates Kégresse." In 1908, the architect Lipsky VA designed a second two-storeyed Art Nouveau building for the Russian Imperial gara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continuous Track
Continuous track is a system of vehicle propulsion used in tracked vehicles, running on a continuous band of treads or track plates driven by two or more wheels. The large surface area of the tracks distributes the weight of the vehicle better than steel or rubber tires on an equivalent vehicle, enabling continuous tracked vehicles to traverse soft ground with less likelihood of becoming stuck due to sinking. Modern continuous tracks can be made with soft belts of synthetic rubber, reinforced with steel wires, in the case of lighter agricultural machinery. The more common classical type is a solid chain track made of steel plates (with or without rubber pads), also called caterpillar tread or tank tread, which is preferred for robust and heavy construction vehicles and military vehicles. The prominent treads of the metal plates are both hard-wearing and damage resistant, especially in comparison to rubber tyres. The aggressive treads of the tracks provide good trac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Vehicle
A military vehicle is any vehicle for land-based military transport and activity, including combat vehicles; both specifically designed for, or significantly used by military and armed forces. Most military vehicles require off-road capabilities and/or vehicle armour (plate), making them heavy, therefore some have vehicle tracks instead of being wheeled vehicles; and half-tracks have ''both''. Furthermore, some military vehicles are amphibious, constructed for use on land and water, and sometimes also intermediate surfaces. Military vehicles are almost always camouflaged, or at least painted in inconspicuous colour(s). In contrast, under the Geneva Conventions, all ''non-combatant'' military vehicles, such as field ambulances and mobile first aid stations, must be properly and clearly ''marked'' as such. Under the conventions, when respected, such vehicles are legally immune from deliberate attack by all combatants. Historically, militaries explored the use of commercial of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citroën
Citroën () is a French automobile brand. The "Automobiles Citroën" manufacturing company was founded in March 1919 by André Citroën. Citroën is owned by Stellantis since 2021 and previously was part of the PSA Group after Peugeot acquired 89.95% share in 1976. Citroën's head office is located in the Stellantis Poissy Plant in Saint-Ouen-sur-Seine since 2021 (previously in Rueil-Malmaison) and its offices studies and research in Vélizy-Villacoublay, Poissy (CEMR), Carrières-sous-Poissy and Sochaux-Montbéliard. In 1934, the firm established its reputation for innovative technology with the Citroën Traction Avant, Traction Avant. This was the world's first car to be mass-produced with front-wheel drive, four-wheel independent suspension, as well as unibody construction, omitting a separate chassis, and instead using the body of the car itself as its main load-bearing structure. In 1954, they produced the world's first hydropneumatic self-levelling suspension system then, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linn Tractor
The Linn tractor is a heavy duty civilian half-track or crawler tractor invented by Holman Harry Linn. Approximately 2500 units were built in Morris, New York, USA from 1916 to 1952. Development Prototypes Linn was a native of Maine and in his quest for a better machine to travel rural roads with his dog and pony show equipment gave up on a six-wheel-drive design by 1907 to have Alvin Lombard, of Waterville, build a machine using the tracks off a Lombard Steam Log Hauler, and underslung gasoline engine and wheels on front. It was equipped with a ship-style cabin with living quarters and able to pull a string of wagons behind as well as supply electric lights for his circus. By 1909 this was replaced because of size with a single rear-tracked machine with standard wheeled front axle; however as Linn had become employed as a salesman, demonstrator and mechanic for Lombard a patent dispute erupted and Linn left Maine with his show. Improved traction system By 1916 Linn had develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tank Steering Systems
Tank steering systems allow a tank, or other continuous track vehicle, to turn. Because the tracks cannot be angled relative to the hull (in any operational design), steering must be accomplished by speeding one track up, slowing the other down (or reversing it), or a combination of both. Half-track vehicles avoid this by combining steerable wheels and fixed-speed tracks. Early steering systems were adopted from tracked work vehicles, generally using a clutch to reduce power to one track, causing it to slow down. These designs have numerous problems, notably when climbing hills or running at high speed, as the reduction in power causes the overall speed to slow. Delivering power to both tracks while turning them at different speeds is a difficult design problem. A series of more advanced designs were introduced, especially through World War II, that maintained power to both tracks during steering, a concept known as regenerative steering. Some also allowed one track to move forward ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1931 Citroën Autochenille P17 Croisière Jaune Photo 2
Events January * January 2 – South Dakota native Ernest Lawrence invents the cyclotron, used to accelerate particles to study nuclear physics. * January 4 – German pilot Elly Beinhorn begins her flight to Africa. * January 22 – Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia. * January 25 – Mohandas Gandhi is again released from imprisonment in India. * January 27 – Pierre Laval forms a government in France. February * February 4 – Soviet leader Joseph Stalin gives a speech calling for rapid industrialization, arguing that only strong industrialized countries will win wars, while "weak" nations are "beaten". Stalin states: "We are fifty or a hundred years behind the advanced countries. We must make good this distance in ten years. Either we do it, or they will crush us." The first five-year plan in the Soviet Union is intensified, for the industrialization and collectivization of agriculture. * February 10 – O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lombard Steam Log Hauler
The term Lombard refers to people or things related to Lombardy, a region in northern Italy. History and culture * Lombards, a Germanic tribe * Lombards of Sicily, a linguistic minority living in Sicily, southern Italy * Lombard League, a medieval alliance of some 30 cities in Northern Italy Businesses * ICICI Lombard, an insurance company in India * Le Lombard (or Editions Lombard), a Belgian comic book publisher * Lombard Bank, a bank in Malta * Lombard Direct, an insurance company in the United Kingdom Places ;France * Lombard, Doubs, a commune of the Doubs ''département'' * Lombard, Jura, a commune of the Jura ''département'' ;United States * Lombard, Illinois * Lombard, Montana * Lombard, Wisconsin Other uses * Lombard (surname) * Lombard (gun), an early cannon * Lombard Street (other) * Automobiles Lombard, a French automobile manufacturer in the 1920s * Lombard Steam Log Hauler * Lombard language, a Romance language spoken in northern Italy (Lomba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvin Lombard
Alvin may refer to: Places Canada * Alvin, British Columbia United States * Alvin, Colorado *Alvin, Georgia * Alvin, Illinois * Alvin, Michigan * Alvin, Texas *Alvin, Wisconsin, a town *Alvin (community), Wisconsin, an unincorporated community Other uses * Alvin (given name) * Alvin (crater), a crater on Mars * Alvin (digital cultural heritage platform), a Swedish platform for digitised cultural heritage * Alvin (horse), a Canadian Standardbred racehorse * 13677 Alvin, an asteroid * DSV ''Alvin'', a deep-submergence vehicle * Alvin, a fictional planet on ''ALF'' (TV series) * Alvin Seville, of the fictional animated characters Alvin and the Chipmunks * "Alvin", by James from the album '' Girl at the End of the World'' * Tropical Storm Alvin See also * Alvin Community College * Alvin High School Alvin High School is a public high school located in the city of Alvin, Texas, United States and classified as a 6A school by the University Interscholastic League (UIL). It is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lombard Steam Log Hauler
The term Lombard refers to people or things related to Lombardy, a region in northern Italy. History and culture * Lombards, a Germanic tribe * Lombards of Sicily, a linguistic minority living in Sicily, southern Italy * Lombard League, a medieval alliance of some 30 cities in Northern Italy Businesses * ICICI Lombard, an insurance company in India * Le Lombard (or Editions Lombard), a Belgian comic book publisher * Lombard Bank, a bank in Malta * Lombard Direct, an insurance company in the United Kingdom Places ;France * Lombard, Doubs, a commune of the Doubs ''département'' * Lombard, Jura, a commune of the Jura ''département'' ;United States * Lombard, Illinois * Lombard, Montana * Lombard, Wisconsin Other uses * Lombard (surname) * Lombard (gun), an early cannon * Lombard Street (other) * Automobiles Lombard, a French automobile manufacturer in the 1920s * Lombard Steam Log Hauler * Lombard language, a Romance language spoken in northern Italy (Lomba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
