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Cost to build US$ 265,000 in 1941, equivalent to $5,489,457 in 2023. The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962. The 25 Big Boy locomotives were built to ...
Union Pacific 4014 is a steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet. It is a four-cylinder simple articulated 4-8-8-4 "Big Boy" type built in 1941 by the American Locomotive Company (ALCO) at its Schenectady Locomotive Works. It was assigned to haul heavy freight trains in the Wasatch mountain ...
The adhesive weight on a 4-8-4 was limited to about 60% of the engine's weight, not including the dead weight of the tender. Henry Bowen, the Chief Mechanical Engineer of the Canadian Pacific Railway (CPR) from 1928 to 1949, tested the first two CPR K-1a Northerns introduced by his predecessor, then he designed a 2-10-4 Selkirk type using the ...
The Reading T-1 was a class of 4-8-4 "Northern" type steam locomotives owned by the Reading Company. They were rebuilt from thirty "I-10sa" class 2-8-0 "Consolidation" type locomotives between 1945 and 1947. Out of the thirty rebuilt, four survive in preservation today, those being numbers 2100, 2101, 2102, and 2124.
The Norfolk and Western J class was a class of 14 4-8-4 "Northern" streamlined steam locomotives built by the Norfolk and Western Railway (N&W) at its Roanoke Shops in Roanoke, Virginia, between 1941 and 1950. The most powerful 4-8-4 locomotives ever produced, the J class were part of the N&W's "Big Three" (along with the class A and Y6 freight ...
They were mounted on a pair of eight-wheel trucks. The weight of the tender, fully loaded was 217 short tons (194 long tons) [3] In 1953, ten of the R-1 tenders were sold to the Norfolk and Western Railway (N&W), where they were paired with their Y4 class 2-8-8-2 compound mallets, until they were all scrapped in 1958. [4]
The increased weight of trains in the early 1900s and need for improved power on Liverpool—Manchester—Hull expresses and Leeds—Fleetwood boat trains indicated a need for an engine more powerful than the Aspinall's 4-4-2 Atlantic of 1899. [1] Hughes described the requirement in a paper read to the Institute of Mechanical Engineers thus: [2]
Swiss classification: '4/6+4/6' The equivalent UIC classification is refined to (2′D)D2′ for simple articulated locomotives. A similar wheel arrangement exists for Garratt locomotives, but is referred to as 4-8-0+0-8-4 since both engine units swivel. 4-8-8-4 Big Boys were only produced for the Union Pacific Railroad. Twenty-five such ...