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Rail - Locomotive - Steam - 4-6-2, Pacific K4

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Name Locomotive, Steam, 4-6-2, Pacific K4
Region North America
Category Rail
Type Locomotive
SubType Steam
Variety 4-6-2, Pacific K4
Manufacturer Various (Details)
Era Era II: 1901 - 1938


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History: Under the Whyte notation for the classification of steam locomotives, 4-6-2 represents the wheel arrangement of four leading wheels on two axles, six powered and coupled driving wheels on three axles and two trailing wheels on one axle. The 4-6-2 locomotive became almost globally known as a Pacific type. The type is well-suited to high speed running. The world speed record for steam traction of 126 miles per hour (203 kilometres per hour) has been held by a British Pacific locomotive, the Mallard, since 3 July 1938.

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 was 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 heavier trains it often pulled from the mid-1930s onward, so they were often double or even triple headed. This was effective, but expensive—several crews were needed. The PRR did have the extra locomotives, many having been displaced by electrification.

From Wikipedia

Railroad/Company: This set of items is comprised of more than one name. Please look at the component items for details on the specific roadnames and/or manufacturers.


Item Links: We found: 1 different collections associated with Rail - Locomotive - Steam - 4-6-2, Pacific K4
Item created by: gdm on 2018-04-29 06:35:56. Last edited by gdm on 2018-04-29 08:50:28

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