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17 cze 2006 · The 2-6-6-4’s four-wheel trailing truck was needed to support a large, deep firebox that was placed behind the rear driving wheels. This big firebox was critical to producing the high combustion rates required for a modern high-horsepower steam locomotive.
2-6-6-4 Locomotives in the USA. Most if not all locomotive designs with four-wheel trailing trucks were the result of the desire for more power and the need for a bigger firebox. The 2-6-6-4 design was no different.
In the Whyte notation for the classification of steam locomotive wheel arrangement, a 2-6-6-4 is a locomotive with a two-wheel leading truck, two sets of six driving wheels, and a four-wheel trailing truck.
8 maj 2023 · The 2-6-6-4 would be used in high-speed freight service and the railroad built its first 2-6-6-4's in 1936. By that time the road was well-known for its ability to produce fine steam locomotives.
7 paź 2018 · LMS Stanier 3-Cylindered 2-6-4 Tank steam locomotives – Sole Survivor. Compact but fast, the 3-Cylindered 2-6-4 Tanks are some of the first engines designed by William Stanier for the London, Midland & Scottish Railway (LMS).
Under the Whyte notation for the classification of steam locomotives, a 2-6-4 locomotive has two leading wheels, six coupled driving wheels and four trailing wheels.
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-6-2+2-6-4 is a Garratt or Union Garratt articulated locomotive using a pair of 4-6-2 engine units back to back, with the boiler and cab suspended between them.
