Union Pacific 9000 Class - Wikipedia
The Union Pacific 9000 class was the only class of steam locomotives with a 4-12-2 wheel arrangement ever to be built, also the 9000 class was the largest rigid frame locomotive ever built. Under the Whyte notation for the classification of steam locomotives, the locomotives had four leading wheels, twelve coupled driving wheels, and two trailing wheels. As the Union Pacific was the only operator of this wheel arrangement, it was often nicknamed the Union Pacific type.
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4-12-2 "Union Pacific" Locomotives: Specs, History, Photos
4-12-2 Locomotives in the USA
The 4-12-2 was dubbed the 'Union Pacific' type and it namesake railroad was the only North American railroad to use it. The American Locomotive Company built eighty-eight of these fast …
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Union Pacific 4-12-2 Locomotives in the USA
The Union Pacific Railroad ordered a single locomotive with a 4-12-2 wheel arrangement and the American Locomotive Company delivered it in March of …
- Country: USA
- Railroad: Union Pacific (UP)
- Locobase ID: 290
- Whyte: 4-12-2
Union Pacific 4-12-2 9000-Class - UtahRails.net
Nov 29, 2013 · The new wheel arrangement of 4-12-2 were given road numbers starting with 9000. These road numbers are believed to have been used because there are 9 wheels on …
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4-12-2 UP 9000 | Trains and Railroads
The Union Pacific Railroad 9000 Class was a class of 88 steam locomotives, built by ALCO for the Union Pacific between 1926 and 1930 utilizing a 4-12-2 wheel arrangement.
Union Pacific 4-12-2 Steam Roster - NE Rails
Union Pacific "Big Boy" | UP 9000 4-12-2 | UP Challenger 4-6-6-4 : Also see: Dual-Drive Steam Engines | Locomotive Specifications
4-12-2, Union Pacific Type - Steam Giants
Learn about the 4-12-2 wheel arrangement, the largest non-articulated steam locomotive in the USA, nicknamed after the Union Pacific Railroad. Find out its history, facts, and where to see the only surviving model, UP #9000.
Lionel Union Pacific 4-12-2 - Trains
Aug 21, 2023 · A detailed review of the Lionel Union Pacific 4-12-2, a model of the 9000 class steam engine with 12 connected drive wheels and Gresley valve gear. The review covers the features, sound, lighting, and variations of this O …
4-12-2 Locomotive Data by Country
4-10-2 Southern Pacific; 12 Drivers. 0-12-0; 4-12-2 Union Pacific; Articulated & Mallets. 2-6+6-2 Mallet Mogul; 2-6+6-4; 2-6+6-6 Allegheny; 4-6+6-2 Cab Forward; 4-6+6-4 Challenger; 2-8+8-0 …
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