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Rail - Locomotive - Steam - 4-6-6-4 Challenger UP 4-6-6-4 Challenger #3939

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Name Locomotive, Steam, 4-6-6-4 Challenger
Region North America
Category Rail
Type Locomotive
SubType Steam
Variety 4-6-6-4 Challenger
Manufacturer Alco (Details)
Era Era III: Transition (1939 - 1957)
Year(s) of Production 1936-1943



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History: The Union Pacific Challengers are a type of simple articulated 4-6-6-4 steam locomotive built by American Locomotive Company (Alco) for the Union Pacific Railroad. 105 of these locomotives were built between 1936 and 1943. The Challengers were nearly 122 ft (37 m) long and weighed 314 tons (284,800 kg). They operated over most of the Union Pacific system, primarily in freight service, but a few were assigned to passenger trains like the Portland Rose. The locomotives were built specifically for Union Pacific and much of the experience gained later went into the design of the "Big Boy", which the later version of the Union Pacific Challenger was redesigned after.

Read more on Wikipedia and on SteamLocomotive.com.

Railroad/Company: The American Locomotive Company, often shortened to ALCO, ALCo or Alco, designed, built and sold steam locomotives, diesel-electric locomotives, diesel engines and generators, specialized forgings, high quality steel, armed tanks and automobiles and produced nuclear energy. The American Locomotive Company was formed in 1901 by the merger of Schenectady Locomotive Engine Manufactory of Schenectady, New York with seven smaller locomotive manufacturers.

The American Locomotive Automobile Company subsidiary designed and manufactured automobiles under the Alco brand from 1905-1913 and produced nuclear energy from 1954-1962. The company changed its name to Alco Products, Incorporated in 1955. In 1964 the Worthington Corporation acquired the company. The company ceased trading in 1969.

From Wikipedia


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Item created by: Alain LM on 2018-10-25 07:13:25. Last edited by Alain LM on 2018-10-25 07:24:41

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