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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.
The next locomotives to use the 4-4-4-4 arrangement were the Pennsylvania Railroad's 52 class T1 locomotives (although the single class S1 was originally intended to be a 4-4-4-4, it was later changed to 6-4-4-6 due to increased weight). These had the cylinders in front of the wheels they drove, so that the rear pair were between the two sets ...
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.
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 ...
The Q2 4-4-6-4 was the most successful example of the duplex locomotive constructed by the PRR. Production locomotives followed from the end of 1944, but these were rather different, the lesson that backward-facing cylinders next to the firebox were a poor design choice made clear.
Herb Baumeister’s macabre double life began to unravel in 1994 when his 13-year-old son found a human skull and a pile of bones in the woods of Fox Hollow Farm, his $1 million estate in ...
1846: The Pennsylvania Railroad Company is chartered to construct a rail line from Harrisburg to Pittsburgh, Pennsylvania. 1850s: Renamed the Pennsylvania Central Railway. 1850: Construction begins on Altoona Works repair shop at Altoona, Pennsylvania. 1857: The Main Line of Public Works of Pennsylvania purchased.
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