2-10-4

2-10-4 (Texas)

Front of locomotive at left

ATSF 5001 Class Texas type

Equivalent classifications UIC class 1E2, 1′E2′ French class 152 Turkish class 58 Swiss class 5/8 Russian class 1-5-2

First known tender engine version First use 1919 Country United States Locomotive No. 3829 Railway Atchison, Topeka and Santa Fe Railway Designer Baldwin Locomotive Works Builder Baldwin Locomotive Works Evolved from 2-10-2, 2-8-4

Under the Whyte notation for the classification of steam locomotives, a 2-10-4 locomotive has two leading wheels on one axle, usually in a Bissel truck, ten coupled driving wheels on five axles, and four trailing wheels on two axles, usually in a bogie. These were referred to as the Texas type in most of the United States, the Colorado type on the Burlington Route, and the Selkirk type in Canada.^[1]