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trailing truck

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NounEdit

trailing truck (plural trailing trucks)

  1. On a steam locomotive, a railroad truck to which wheel axles (and, hence, wheels) for one or more coupled pairs of unpowered wheels are attached through bearings, located behind the driving wheels.
    • 1959, Steam's Finest Hour, edited by David P. Morgan, Kalmbach Publishing Co., page 19:
      After trying but not mass-producing a heavy Pacific and tabulating indifferent tests of a three-cylinder 4-8-2, Central was in a mood to explore the possibilities of four-wheel trailing trucks.

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