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KPRA (other)
KPRA may refer to: * Kingpin to rear axle An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing ..., a measurement of the length of a semi-tractor trailer * KPRA (FM) (89.5 FM), a radio station in Ukiah, California {{Disambiguation, callsign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingpin (automotive Part)
The kingpin (also king-pin, king pin and k pin) is the main pivot in the steering mechanism of a car or other vehicle. The term is also used to refer to part of a fifth wheel coupling apparatus for a semi and its trailer or other load. History Originally, with the 'turntable' steering of horse-drawn wagons, this was a single pin on which the moveable axle was pivoted beneath the wagon's frame. This located the axle from side to side, but the weight of the wagon was carried on a circular wooden ring turntable surrounding this. Similar centre pivot steering was used by steam traction engines, the kingpin being mounted on the 'perch bracket' beneath the boiler. Some early cars also used centre pivot steering, although it became apparent that it was unsuitable for their increasing speeds. Ackermann steering separates the steering movement into two pivots, one near the hub of each front wheel. The beam axle between them remains fixed relative to the chassis, linked by the suspensi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
