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The Pennsylvania Railroad (PRR) class T1 duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 with two prototypes and later in 1945-1946 with 50 production examples, were the last steam locomotives built for the PRR and arguably its most controversial.
Pennsylvania Railroad 5550 (PRR 5550) is a mainline duplex drive steam locomotive under construction in the United States. With an estimated completion by 2030, the locomotive will become the 53rd example of the Pennsylvania Railroad's T1 steam locomotive class and the only operational locomotive of its type, [7] as well as the largest steam locomotive built in the United States since 1952.
The London and South Western Railway T1 class was a class of fifty 0-4-4T steam tank locomotives designed for suburban passenger work by William Adams and built between 1888 and 1896. History [ edit ]
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 T-1s could haul trains of the same length as an H-7 class 2-8-8-2 at a faster speed. The locomotives mainly operated between Russell, Kentucky and Toledo, Ohio, with a few being assigned in eastern Virginia. They were rated at 13,500-short-ton (12,200 t; 12,100-long-ton) loaded coal hoppers.
A nonprofit group known as the T1 Trust is in the process of constructing a new duplex locomotive, a T1-class engine known as Pennsylvania Railroad 5550, intending to utilize design improvements from the postwar steam era not used or seldom tested on pre-existing T1s in the hope of creating better performance characteristics. The estimated year ...
Locomotive classification on the Pennsylvania Railroad took several forms. Early on, steam locomotives were given single-letter classes. As the 26 letters were quickly assigned, that scheme was abandoned for a more complex system. [1] This was used for all of the PRR's steam locomotives, and — with the exception of the final type bought (the ...
List of Isle of Wight-based O2 Class locomotives; LMS Stanier Class 2 0-4-4T; ... LSWR O2 class; LSWR O2 Class W24 Calbourne; LSWR T1 class; M. Metropolitan Railway C ...