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  2. Pennsylvania Railroad class T1 - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_class_T1

    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.

  3. Pennsylvania Railroad 5550 - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_5550

    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.

  4. Duplex locomotive - Wikipedia

    en.wikipedia.org/wiki/Duplex_locomotive

    The PRR also desired to apply the duplex principle to freight haulage, and the Q1 was the first experiment in that direction. It was a 4-6-4-4 fast freight locomotive, delivered in May 1942. Like the B&O's George H. Emerson it had the second pair of cylinders facing backwards, and all were fitted with standard Walschaerts valve gear.

  5. Pennsylvania Railroad locomotive classification - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad...

    These were both withdrawn from service by the mid-1920s. In 1942, the PRR built 123 2-10-4 "Texas" type locomotives based on C&O plans; class J now being unoccupied, it was reused for them. The PRR J1 was an improved version of its C&O counterpart with more pulling power. J1 - 2-10-4 freight locomotives. J28 - experimental 2-6-2 locomotives.

  6. Pennsylvania Railroad K4 class - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad_K4_class

    The Pennsylvania Railroad K4 was a class of 425 4-6-2 steam locomotives built between 1914 and 1928 for the Pennsylvania Railroad (PRR), where they served as the primary mainline passenger steam locomotives on the entire PRR system until late 1957. Attempts were made to replace the K4s, including the K5 and the T1 duplex locomotive.

  7. Pennsylvania Railroad - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Railroad

    A PRR wooden freight car with steel underframe PRR boxcar No. 19103 of PRR class X54. The Pennsylvania Railroad bought its first 75 freight cars in 1849. [3]: 20 Two years later, the Pennsy owned 439 freight cars. By 1857, it had 1,861 cars, and in 1866, 9,379 cars.

  8. Reading T-1 Class - Wikipedia

    en.wikipedia.org/wiki/Reading_T-1_Class

    Nine T-1's (Nos. 2107, 2111-2115, 2119, and 2128) were leased to the Pennsylvania Railroad (PRR), while others ran upstate in Pennsylvania on the RDG, until early 1957. Some T-1s were also loaned as steam generators to Steel mills. Upon returning to the RDG the following year, the PRR-leased locomotives, with the exception of No. 2128, were ...

  9. Steam locomotives of the 21st century - Wikipedia

    en.wikipedia.org/wiki/Steam_locomotives_of_the...

    PRR T1 4-4-4-4 duplex No. 5550: The Pennsylvania Railroad built 52 4-4-4-4 duplex locomotives for passenger service, and the last one was scrapped in 1956. The Pennsylvania Railroad T1 Steam Locomotive Trust was created to construct a fully functional 53rd member of the T1 class. The new T1, to be numbered 5550, is expected to be completed by ...