The PRR assigned class K to the 4-6-2 "Pacific" type. The Pacific was the most common type of passenger locomotive on the Pennsylvania. K2 - 153 built at Altoona 1910-1911; K3s - 30 built …

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 …

The PRR S1 class steam locomotive (nicknamed "The Big Engine") was a single experimental duplex locomotive of the Pennsylvania Railroad. It was designed to demonstrate the …

The M1 class was considered by many to be the best steam locomotive the PRR ever owned. The M1 proved to be the most valuable on the railroad's mountainous Middle & Pittsburgh …

The PRR classified articulated locomotives and joined locomotive units by using multiples of the previous classifications. Non-Articulated steam: 1320 - 2-2-2-0 locomotive, based on the …

As the PRR dieselized its passenger fleet the T1’s were reassigned to the Pittsburgh – Chicago, Cincinnati, St. Louis via Columbus lines. Often they were assigned to the heavier mail trains. …

The Pennsylvania Railroad (PRR) class I1s steam locomotives were the largest class of 2-10-0 "Decapods" in the United States. From 1916 to 1923, 598 locomotives were produced (123 at …

Jun 20, 2020 · The PRR T1 was a duplex locomotive that utilized a 4-4-4-4 wheel arrangement and was designed to haul 880 trailing tons (798-t) at 100 mph (161 km/h). PRR envisioned …

The first experimental duplex on the PRR was the S1, a huge rigid frame duplex locomotive of the 6-4-4-6 wheel arrangement. This engine was over 146' long! This locomotive was built by the …

Nov 17, 2020 · This photo shows the PRR's huge S1 6-4-4-6 locomotive under construction right here in Altoona at the Juniata Shops in 1939. Nicknamed "The Big Engine," the S1 was the …