Builder's photograph of Altoona-built K5, #5698. Water cap. Factor of adh. The Pennsylvania Railroad 's class K5 were experimental 4-6-2 "Pacific" types, built in 1929 to see if a larger Pacific than the standard K4s was worthwhile. Two prototypes were built, #5698 at the PRR's own Altoona Works, and #5699 by the Baldwin Locomotive Works.

In 1929, the PRR performed tests and research to see if a larger Pacific then the K4s would be economical. These tests culminated in the construction of two prototype locomotives, classed K5. They were both fitted with a much wider boiler than the K4s, but one dimensionally similar to those of the I1s class 2-10-0 decapods.

At any rate the K4 Class were first named "K4", and when superheating was added, they were then classed K4s. The PRR had some slightly larger boilered K Class, named K5s (they were also superheated).

Feb 12, 2023 · Pennsylvania Railroad (PRR) K4 Pacific 4–6–2 class, 425 built between 1914 and ‘28, Premier passenger-hauling loco from 1914 to 1957, K5 represents attempt to improve on K4’s.

Sep 5, 2022 · Pennsylvania Railroad K5 Pacific #5698 leads a southbound passenger train on the Northern Central line. The PRR built two K5s as a successor to the K4 but determined that the 4-6-2 arrangement was maxed out.

Dec 26, 2023 · Two prototypes were built, #5698 at the PRR's own Altoona Works, and #5699 by the Baldwin Locomotive Works. Although classified identically, the two locomotives differed in many aspects, as detailed below.

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Mar 25, 2022 · Lee B Green introduces his 17/64ths TruScale line of Mi-Loco O gauge trains in 1934 at the Chicago World's Fair . Here is the PRR K5 by Mi-Loco. Running with outside 3rd rail as originally designed . Note engine is proper 17/64ths …

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.

May 12, 2020 · The BL started in 1912 when the predominant power for PRR passenger trains were E2 and E3 Atlantics. It is doubtful a D16sb would have been able to pull the heavyweight Pullman cars. With the K4 not arriving until 1914, it is likely that K2s and and K3s may have seen some service in those early years also.