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There were only two classes of 4-8-4+4-8-4 steam locomotives worldwide, all of which were constructed by Beyer, Peacock & Company, the owners of the Garratt patent. [1]The predecessor 4-8-2+2-8-4 Double Mountain was likely the optimal Garratt wheel arrangement, with the four-wheeled leading bogies and the two-wheeled trailing trucks on each engine unit ensuring stability at speed and with ...
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 ...
The Be 4/6 utilized the maximum axle load of 20 t (20 long tons; 22 short tons) fully. The motors for the Ae 4/8 were heavier than those of the Be 4/6, therefore the Ae 4/8 was planned with two more idle axles from the beginning. In contrast to the Be 4/6 bogie locomotive the Ae 4/8 was built as a frame locomotive with a double articulated body ...
Union Pacific 844 is a class "FEF-3" 4-8-4 "Northern" type steam locomotive owned and operated by the Union Pacific Railroad for its heritage fleet.Built in December 1944 by the American Locomotive Company (ALCO) of Schenectady, New York, No. 844 is one of four surviving FEF series locomotives and the only one in operation.
During revenue service, the T-1's rarely pulled passenger trains beyond post–World War II troop trains. [5] As steam locomotives that were manufactured in the mid-1940s, the T-1's were only used in revenue service for less than ten years before the end of revenue steam operations on the RDG, with all thirty 4-8-4's being withdrawn by 1954. [4]
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The Baldwin 4-8+8-4 750/8DE1 was the Baldwin Locomotive Works' first attempt at building a road diesel locomotive. The trucks were configured in a 2-D+D-2 wheel arrangement. Only a single test unit was built. In 1943 Baldwin built an experimental "Centipede" as a demonstrator unit, which was assigned road #6000.
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 haul freight over the Wasatch Range between Ogden, Utah, and Green ...