4-8-8-4

From Wiktionary, the free dictionary
Jump to navigation Jump to search
English Wikipedia has an article on:
Wikipedia
Union Pacific Big Boy, the only class of this wheel arrangement

English

[edit]

Noun

[edit]

4-8-8-4 (plural 4-8-8-4s)

  1. Under the Whyte notation system, a Mallet-type locomotive with four leading wheels on a leading truck, two sets of eight driving wheels, and four trailing wheels on a trailing truck.