page_title: 2-10-4
section_title: Atchison, Topeka & Santa Fe
hierarchical_section_title: 2-10-4 / Usage / United States of America / Atchison, Topeka & Santa Fe
caption_attribution_description: English: Atchison, Topeka &amp; Santa Fe Railway 2-10-4 steam locomotive #5000 "Madame Queen" waiting in a siding to meet an eastbound train. Ricardo, New Mexico, March 1943. Deutsch: Dampflokomotive (Achsfolge 2-10-4) 5000 "Madame Queen" wartet auf einem Nebengleis die Kreuzung mit einem ostwärts fahrenden Zug ab. Ricardo, New Mexico (März 1943).
context_page_description: 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.
context_section_description: The Atchison, Topeka & Santa Fe Railway (ATSF) took delivery of locomotive No. 3829 from the Baldwin Locomotive Works in 1919. It was used by Santa Fe as an experimental locomotive and was rostered as a member of ATSF’s 3800 class of 2-10-2s that was fitted with a four-wheel trailing truck. Nearly one-hundred more 3800 class locomotives were delivered after No. 3829, but all with the 2-10-2 wheel arrangement. Photographs exist that show No. 3829 fitted with at least two different designs of four-wheel trailing truck through the years. No other members of the 3800 class have been documented with four-wheel trailing trucks. No. 3829 was scrapped in 1955, still equipped with a four-wheel trailing truck.
  Santa Fe, who had originated the 2-10-4 type, adopted it again in 1930 with No. 5000, nicknamed Madame Queen. This locomotive was similar to the C&O T-1, with the same 69 inches (1,753 millimetres) drivers but with 300 pounds per square inch (2,100 kilopascals) boiler pressure and 60% limited cutoff. It proved the viability of the type on the Santa Fe railway, but the Great Depression shelved plans to acquire more.
  In 1938, with the railroad's fortunes improving, Santa Fe acquired ten more 2-10-4 locomotives. These came with 74 inches (1,880 millimetres) diameter drivers and 310 pounds per square inch (2,100 kilopascals) boiler pressure, making these ATSF 2-10-4s the fastest and most modern of all.
  Of the original order of ten, five were oil-burning and five coal-burning, but when Santa Fe ordered twenty-five more for delivery in 1944, all were delivered equipped to burn oil. The first of the 1944 batch produced 5,600 drawbar horsepower on road test, the highest figure known for a two-cylinder steam locomotive.
caption: ATSF 2-10-4 No. 5000 Madame Queen
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