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UP 3977
The Union Pacific Challengers are a type of simple articulated 4-6-6-4 steam locomotive built by American Locomotive Company (ALCO) from 1936 to 1944 and operated by the Union Pacific Railroad until the late 1950s. A total of 105 Challengers were built in five classes. They were nearly long and weighed 537 short tons (487 tonnes). They operated over most of the Union Pacific system, primarily in freight service, but a few were assigned to the ''Portland Rose'' and other passenger trains. Their design and operating experience shaped the design of the Union Pacific Big Boy, Big Boy locomotive type, which in turn shaped the design of the last three orders of Challengers. Two Union Pacific Challengers survive. The most notable is Union Pacific 3985, Union Pacific No. 3985, which was restored by the Union Pacific in 1981, then operated in Excursion train, excursion service as part of its Union Pacific heritage fleet, heritage fleet program. Mechanical problems forced it out of servic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Pacific 3985
Union Pacific 3985, also known as the "Challenger", is a four-cylinder simple articulated 4-6-6-4 "Challenger"-type steam locomotive built in July 1943 by the American Locomotive Company (ALCO) of Schenectady, New York, for the Union Pacific Railroad. No. 3985 is one of only two Challengers still in existence and the only one to have operated in excursion service. No. 3985 operated in revenue service until 1957. It was then stored in the roundhouse in Cheyenne, Wyoming, until 1975, when it was placed outdoors beside the Cheyenne depot. In March 1981, after a group of Union Pacific employees restored the locomotive to operating condition, it was placed into excursion service as part of the Union Pacific's heritage fleet and became the world's largest operational steam locomotive. Mechanical problems took it offline in 2010, after which it was stored at the Union Pacific's Steam Shops in Cheyenne. On May 1, 2019, the title of largest operational steam locomotive was passed to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
