Hotchkiss drive (original) (raw)
The Hotchkiss drive is a shaft drive form of power transmission. It was the dominant means for front-engine, rear-wheel drive layout cars in the 20th century. The name comes from the French automobile manufacturer Hotchkiss, although other makers, such as Peerless, used similar systems before Hotchkiss. During the early part of the 20th century chain-drive power transmission was the main direct drive competitor of the Hotchkiss system, with the torque tube also popular until the 1950s.
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| dbo:abstract | El sistema de transmisión Hotchkiss es un sistema de transmisión mecánica. En automoción se utiliza para trasmitir potencia a un eje rígido trasero desde un motor situado en la parte delantera del vehículo, siendo el sistema de transmisión predominante en vehículos de tracción trasera a lo largo del siglo XX. Su nombre procede del fabricante francés de automóviles Hotchkiss, aunque anteriormente ya se utilizaron sistemas de transmisión similares por parte de otros fabricantes como Peerless. Coincide con el sistema de transmisión por tubo de empuje en emplear un eje de transmisión (también llamado árbol de transmisión o "cardán" en los países de habla hispana) para trasladar el movimiento giratorio del cigüeñal de un motor situado longitudinalmente hasta un diferencial integrado en el puente trasero. De este modo el árbol de transmisión necesariamente debe seguir el recorrido de la suspensión, formando parte junto con el diferencial del peso no suspendido del vehículo en contraposición a los ejes motrices con suspensión independiente o eje De Dion, en los que la transmisión va fijada al chasis, formando parte del peso suspendido. (es) The Hotchkiss drive is a shaft drive form of power transmission. It was the dominant means for front-engine, rear-wheel drive layout cars in the 20th century. The name comes from the French automobile manufacturer Hotchkiss, although other makers, such as Peerless, used similar systems before Hotchkiss. During the early part of the 20th century chain-drive power transmission was the main direct drive competitor of the Hotchkiss system, with the torque tube also popular until the 1950s. Most shaft-drive systems consist of a drive shaft (also called a "propeller shaft" or Cardan shaft) extending from the transmission in front to the differential in the rear. The differentiating characteristic of the Hotchkiss drive is the fact that the axle housing is firmly attached to the leaf springs to transfer the axle torque through them to the car body. Also, it uses universal joints at both ends of the driveshaft, which is not enclosed. The use of two universal joints, properly phased and with parallel alignment of the drive and driven shafts, allows the use of simple cross-type universals. In contrast, a torque tube arrangement uses only a single universal at the end of the transmission tailshaft, typically a constant velocity joint, and the axle housing is held fast by the torque tube, which anchors the differential housing to the transmission. In the Hotchkiss drive, slip-splines or a plunge-type (ball and trunnion u-joint) eliminate thrust transmitted back up the driveshaft from the axle, allowing simple rear-axle positioning using parallel leaf springs. In the torque-tube type, this thrust is taken by the torque tube to the transmission and thence to the transmission and motor mounts to the frame. While the torque-tube type, when combined with rear coil springs (1938-62 Buick), requires additional locating elements, such as a Panhard rod, this is not needed with a torque tube/leaf spring combination (1906-1937 Buick, early Ford, etc.). Some Hotchkiss driveshafts are made in two pieces with another universal joint in the center for greater flexibility, typically in trucks and specialty vehicles built on firetruck frames. Some installations use rubber mounts to isolate noise and vibration. The 1984–1987 RWD Toyota Corolla (i.e., Corolla SR5 and GT-S) coupe is another example of a car that uses a 2-part Hotchkiss driveshaft with a rubber-mounted center bearing. This design was the main form of power transmission for most cars from the 1920s through the 1970s. As of 2016 it remains common in pick-up trucks, and sport utility vehicles. Just as important as power transmission is braking. In power transmission, the torque applied to the wheels is countered by an equal and opposite reaction in the axle housing, but in braking, the torque of braking the wheels is equal but in the same direction. In a rear wheel drive car, the braking applied by the rear brakes is just as important as the power transmission, and the problem is the same and is solved in the same manner. Firmly anchoring the axle housing to the leaf springs transfers both directions of torque, (both acceleration and braking), to the car body. There is no connection between the Hotchkiss drive and the modern US suspension-modification company called Hotchkis. (en) |
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| rdfs:comment | The Hotchkiss drive is a shaft drive form of power transmission. It was the dominant means for front-engine, rear-wheel drive layout cars in the 20th century. The name comes from the French automobile manufacturer Hotchkiss, although other makers, such as Peerless, used similar systems before Hotchkiss. During the early part of the 20th century chain-drive power transmission was the main direct drive competitor of the Hotchkiss system, with the torque tube also popular until the 1950s. (en) El sistema de transmisión Hotchkiss es un sistema de transmisión mecánica. En automoción se utiliza para trasmitir potencia a un eje rígido trasero desde un motor situado en la parte delantera del vehículo, siendo el sistema de transmisión predominante en vehículos de tracción trasera a lo largo del siglo XX. Su nombre procede del fabricante francés de automóviles Hotchkiss, aunque anteriormente ya se utilizaron sistemas de transmisión similares por parte de otros fabricantes como Peerless. (es) |
| rdfs:label | Transmisión Hotchkiss (es) Hotchkiss drive (en) |
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| foaf:depiction | wiki-commons:Special:FilePath/Leaf_spring,_showing_...anual_of_Driving_and_Maintenance).jpg wiki-commons:Special:FilePath/Rear_axle_with_torque...anual_of_Driving_and_Maintenance).jpg |
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