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Definition of the noun 2-10-2

What does 2-10-2 mean as a name of something?


  1. Under the Whyte notation system, a steam locomotive that has two leading wheels, five pairs of coupled driving wheels, and two trailing wheels.


2-10-2: Under the Whyte notation for the classification of steam locomotives, 2-10-2 represents the wheel arrangement of two leading wheels on one axle, usually in a leading truck, ten powered and coupled driving wheels on five axles, and two trailing wheels on one axle, usually in a trailing truck. In the United States and elsewhere the 2-10-2 is known as the Santa Fe type, after the Atchison, Topeka and Santa Fe Railway that first used the type in 1903.

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