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The introduction of the 4-6-2 design in 1901 has been described as "a veritable milestone in locomotive progress". [3] On many railways worldwide, Pacific steam locomotives provided the motive power for express passenger trains throughout much of the early to mid-20th century, before either being superseded by larger types in the late 1940s and 1950s, or replaced by electric or diesel-electric ...
The Q2 locomotive was 78% more powerful than the locomotives that PRR had in service at the time, and the company claimed the Q2 could pull 125 freight cars at a speed of 50 mph (80 km/h). [5] These were an improved version of the previous Q1 class , which was a 4-6-4-4 dual-purpose engine instead of a 4-4-6-4 freight engine.
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. Attempts were made to replace the K4s, including the K5 and the T1 duplex locomotive.
A larger locomotive with eight driving wheels was needed. This route was eventually taken by the T1 4-4-4-4 duplex locomotives, but the Great Depression and the large cost of electrification meant that PRR steam locomotive development effectively ceased after the K5 and M1a. The electrical department became the thrust of PRR locomotive policy ...
They were originally built as 2-6-6-2s but were refitted with a four-wheel leading truck to increase stability at speed. Southern Pacific AM-2s were built from July to August 1911 by Baldwin Locomotive Works as Cab Forwards. These 4-6-6-2s began retirement in the mid- to late-1930s, although a few remained in operation until the end of World ...
Atchison, Topeka and Santa Fe 3415 is a preserved class "3400" 4-6-2 "Pacific" type steam locomotive built in June 1919 by the Baldwin Locomotive Works for the Atchison, Topeka and Santa Fe Railway. Retired in 1954, it sat in Eisenhower Park in Abilene, Kansas, until 1996. At that point, it was put on display in the Abilene and Smoky Valley yard.
The Great Central Railway Class 9N, classified A5 by the LNER, was a class of 4-6-2 tank locomotives designed by John G. Robinson for suburban passenger services. They were fitted with superheaters , piston valves and Stephenson valve gear .
In response to this, the CP's chief mechanical officer, William E. Woodhouse, designed a new class of 4-6-2 “Pacific” type steam locomotive that would be known as the G-3 class. No. 2317 was built in June 1923 by the Montreal Locomotive Works as part of the G-3c subclass, and it was put into service, pulling mainline passenger trains for ...