# 4-10-0

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Locomotive wheel arrangement

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El Gobernador, the only 4-10-0 locomotive to operate in the United States

Under the [Whyte notation](/source/Whyte_notation) for the classification of [steam locomotives](/source/Steam_locomotive), **4-10-0** represents the [wheel arrangement](/source/Wheel_arrangement) of four [leading wheels](/source/Leading_wheel), ten powered and coupled [driving wheels](/source/Driving_wheel), and no [trailing wheels](/source/Trailing_wheel). [Central Pacific Railroad](/source/Central_Pacific_Railroad)'s *[El Gobernador](/source/El_Gobernador)*, built in 1883, was the only locomotive with this wheel arrangement to operate in the United States. The name "Mastodon" has also been applied to this type,[1][2] though this nickname has also been mistakenly used for the [4-8-0](/source/4-8-0) arrangement (Mastodon was the unofficial nickname of the Central Pacific's No. 229, the first 4-8-0 ever built), leading to some confusion. Sources refer to the 4-8-0 as the Twelve-wheeler.[1][2] Later, these locomotives were named "Super Mastodon's."

The Bulgarian State Railways operated a group of 3-cylinder 4-10-0s, their class 11.

Other equivalent classifications are:

- [UIC classification](/source/UIC_classification): **2E** (also known as German classification and [Italian classification](/source/Italian_classification))

- [French classification](/source/French_classification): **250**

- [Turkish classification](/source/Turkish_classification): **57**

- [Swiss classification](/source/Swiss_classification): **5/7**

## References

1. ^ [***a***](#cite_ref-LCyclo_1-0) [***b***](#cite_ref-LCyclo_1-1) ["Locomotives: Whyte's Notation"](https://books.google.com/books?id=oMY1AQAAMAAJ&pg=PA106). *Locomotive Cyclopedia of American Practice*. Simmons-Boardman Publishing Corporation. 1922. pp. 106–107.

1. ^ [***a***](#cite_ref-railroad_pocket-book_2-0) [***b***](#cite_ref-railroad_pocket-book_2-1) [Colvin, Fred H.](/source/Fred_H._Colvin) (1906). [*The railroad pocket-book: a quick reference cyclopedia of railroad information*](https://archive.org/details/bub_gb_HhUx85xep4cC). New York, Derry-Collard; London, Locomotive Publishing Company (US-UK co-edition). p. L‑9.

v t e Steam locomotive wheel arrangements (Whyte notation) Single engine types 0-2-2 0-2-4 2-2-0 2-2-2 2-2-4T 4-2-0 4-2-2 4-2-4T 6-2-0 0-3-0 (monorail) 0-4-0 0-4-0+4 0-4-2 0-4-4T 0-4-6T 2-4-0 2-4-2 2-4-4T 2-4-6T 4-4-0 4-4-2 4-4-4 4-4-6 0-6-0 0-6-2 0-6-4T 0-6-6T 2-6-0 2-6-2 2-6-4 2-6-6T 4-6-0 4-6-2 4-6-4 0-8-0 0-8-2 0-8-4T 0-8-6T 2-8-0 2-8-2 2-8-4 2-8-6 4-8-0 4-8-2 4-8-4 4-8-6 6-8-6 0-10-0 0-10-2 2-10-0 2-10-2 2-10-4 4-10-0 4-10-2 0-12-0 2-12-0 2-12-2 2-12-4T 4-12-2 4-14-4 Divided drive and duplex engine types 0-2-2-0 2-2-2-0 2-2-2-2 2-2-4-0T 4-2-2-0 2-4-6-2 4-4-4-4 6-4-4-6 4-4-6-4 4-6-4-4 Articulated locomotives Fairlie, Meyer and Garratt types 0-4-0+0-4-0 2-4-0+0-4-2 2-4-2+2-4-2 4-4-2+2-4-4 0-6-0+0-6-0 0-6-2+2-6-0 2-6-0+0-6-2 2-6-2+2-6-2 4-6-0+0-6-4 4-6-2+2-6-4 4-6-4+4-6-4 0-8-0+0-6-0T 2-8-0+0-8-2 2-8-2+2-8-2 4-8-0+0-8-4 4-8-2+2-8-4 4-8-4+4-8-4 Articulated locomotives Mallet types 0-4-4-0 0-4-4-2 2-4-4-0 2-4-4-2 0-6-6-0 2-6-6-0 2-6-6-2 2-6-6-4 2-6-6-6 2-6-8-0 4-4-6-2 4-6-6-2 4-6-6-4 0-8-8-0 2-8-8-0 2-8-8-2 2-8-8-4 4-8-8-2 4-8-8-4 2-10-10-2 Articulated locomotives Triplex and other multiplex types 2-8-8-8-2 2-8-8-8-4 2-8-8-8-8-2 0-6-2+2-4-2-4-2+2-6-0 2-6-6-2+2-6-6-2 2-8-8-8-8-8-2 2-10-10-10-10-10-2 2-4-4-2+2-8-8-2+2-4-4-2 Articulated locomotives Engerth types 0-4-4T 0-4-6T 2-6-4 0-6-4T 0-6-4-0 0-8-4T 0-8-6T Geared locomotives Shay Climax Heisler Willamette Other notation forms: AAR Swiss UIC

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Adapted from the Wikipedia article [4-10-0](https://en.wikipedia.org/wiki/4-10-0) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/4-10-0?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.