4-2-2

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T. D. Judah, a locomotive rebuilt as a 4-2-2 by Central Pacific Railroad.
T. D. Judah, a locomotive rebuilt as a 4-2-2 by Central Pacific Railroad.

Under the Whyte notation for the classification of steam locomotives, a 4-2-2 locomotive has four leading wheels arranged in a leading truck, two driving wheels and two trailing wheels. The equivalent UIC classification is 2'A1'.

[edit] Examples from the UK

Iron Duke class engines waiting scrapping
Iron Duke class engines waiting scrapping

[edit] Examples from Germany

Technical drawing of the first Borsig locomotive
Technical drawing of the first Borsig locomotive
  • The first steam locomotive made by Borsig, Berlin, the Borsig No 1, was an 4-2-2, built 1841.




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