Early 20th Century
The onset of the 20th century saw the introduction of many new locomotives to the W.A.G.R. Notable examples included the E and F class engines of 1902 which were near identical with the exception of their wheel arrangements. An additional variant of the E class was provided as the Ec class, built in the United States. The E class were used for passenger services and were accordingly given the larger diameter driving wheels in a 4-6-0 configuration, while the F class freight locomotives had a 4-8-0 arrangement, providing extra power at the expense of speed. The D class 4-6-4T suburban tank engines were likewise introduced in 1902 and replaced the N class engines in suburban operations. All three classes, with the exception of some individual locomotives, underwent the process of superheating in 1912 to become the Es, Fs and Ds classes respectively. Also in 1912 the M class garratt-type locomotives were introduced, representing the first use of this type of locomotive in full-size mainline operation. The class was well adapted to WAGR's light branchlines and tight-radius curves thanks to its articulation.
Read more about this topic: Locomotives Of The Western Australian Government Railways
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