MTH Railking Pennsylvania K-4 4-6-2 Protosound 2.0 LNIB

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  • Item Category: Toys, Dolls, Games & Puzzles
  • Source: eBay
  • Sold Date: Jul 17, 2009
  • Channel: Auction House

Up for auction an MTH Railking Pennsylvania PRR K-4s 4-6-2 Steam Locomotive, test run, in box. Item number 30-1162-1.

AW -2000 Volume 2 - RailKing

4-6-2 K-4s Pacific Steam Engine w/Proto-Sound 2.0 - PRR Cab # 3761

This highly detailed and colorful, Pennsylvania K-4 includes: die cast boiler and tender body, die cast metal chassis, colorful paint schemes, metal wheels and axles, constant voltage headlight, die cast truck sides, precision flywheel equipped motor, remote controlled proto coupler, metal handrails and decorative bell, decorative metal whistle, operating proto smoke system, protosound 2.0 with the digital command system featuring Proto Effects, measures 24 X 2½ X 3½ inches and operates on 031 curves. Box and instructions are included.

The Pennsylvania Railroad 's K4s 4-6-2 "Pacific" (425 built 1914–1928, PRR Altoona, Baldwin ) was their premier passenger-hauling steam locomotive from 1914 through the end of steam on the PRR in 1957.

Attempts were made to replace the K4s, including the K5 and the T1 duplex locomotive , but none were really successful, and the K4s hauled the vast majority of express passenger trains until replaced by diesel locomotives . The K4s was not powerful enough for the weight of trains it was often called upon to haul from the mid 1930s onward, and so they were often double or even triple headed. This was effective, but wasteful in that several crews were needed. The PRR did have the extra locomotives, because many had been displaced by electrification . The PRR often referred to itself as the Standard Railroad of the World, the K4 has sometimes been referred to as the Standard Passenger Locomotive of the World.


The K4s was designed under the supervision of PRR Chief of Motive Power J.T. Wallis , assisted by Chief Mechanical Engineer Alfred W. Gibbs and Mechanical Engineer Axel Vogt , as one of a pair of classes with the L1s 2-8-2 "Mikado", sharing a boiler and other features. A fair amount of inspiration came from the large experimental K29s Pacific built in 1911 by the American Locomotive Company . Also influential was Gibbs' design for the successful E6 4-4-2 "Atlantics", from which the K4s inherited its heat-treated, lightweight machinery, its cast-steel KW trailing truck , and much in the way of general appearance.

The K4s design increased grate area from previous classes' 55 to 70 sq ft (5.1 to 6.5 m 2). The boiler barrel was much fatter than previous classes, and the increase in heating surface and boiler size gave the class prodigious steam-generating capability. Equipment on the first prototype, built in 1914, was conservative and included a screw reverse ( power reverse would soon be added), a small 70-P-70 tender holding only 7,000 US gallons (26 m³) of water and 12½ tons of coal set up for hand firing, a wooden cowcatcher pilot , a square-cased, old-fashioned headlight and piston tailrods (soon to go).

The K4s design was successful enough that it influenced other locomotive designs, and not only those of other PRR locomotives. London and North Eastern Railway Chief Mechanical Engineer Nigel Gresley incorporated much of the boiler design (including the tapered shape) into his famous Class A1 Pacific. [1 ]


Three years elapsed until production examples were constructed. Partly, this was due to extensive, exhaustive testing, but wartime necessitated priority in construction to the L1s Mikado type for freight. In 1917, Altoona's Juniata Shops started producing K4s in numbers. The first 168 carried widely scattered road numbers as traditional for the PRR, but subsequent locomotives produced after 1920 were assigned numbers in consecutive blocks.

Year Quantity Road numbers 1914 1 1737 1917 41 assorted numbers –3684, 5334–5349, plus assorted numbers 1919 15 assorted numbers for PRR Lines West 1920 50 3726–3775 1923 57 3800, 3801, 3805–3807, 3838–3889 1924 50 5350–5399 1927 92 5400–5491 1928 8 5492–5499