Locomotive #3768 ~ Dedi to RichardPhotos by pimanjc

Photography • Transportation • posted on Mar 16, 2014

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Description

Northern Under the Whyte notation for the classification of steam locomotives, 4-8-4 represents the wheel arrangement of four leading wheels on two axles, usually in a leading truck, eight powered and coupled driving wheels on four axles, and four trailing wheels on two axles, usually in a trailing truck. The type was first used by the Northern Pacific Railway and is consequently most commonly known as a Northern. [Wikipedia] The 4-8-4 wheel arrangement was an obvious progression from the 4-8-2 Mountain type and, like the 2-8-4 Berkshire and 4-6-4 Hudson types, an example of the "Super Power" concept in steam locomotive design that made use of the larger firebox that could be supported by the four-wheel trailing truck, which allowed improved free steaming, particularly at speed. This was combined with the stability at speed brought about by the four-wheel leading truck and the greater adhesion of the eight-coupled driving wheels. The stability of the 4-8-4 wheel arrangement enabled it to be provided with driving wheels of up to 80 inches (2,032 millimetres) diameter for high speed passenger and fast freight operation. #3768 is located at the Great Plains Transportation Museum in Wichita, KS. I invite you to see her sister engine as posted by RichardPhotos. Thank you for viewing my gallery and your comments. They are appreciated. JC