4-6-2 2-6-4
Under the Whyte notation for the classification of steam locomotives by wheel arrangement, a is a Garratt or Union Garratt articulated locomotive using a pair of engine units back to back, with the boiler and cab suspended between them. The wheel arrangement of each engine unit has four leading wheels on two axles, usually in a leading bogie, six powered and coupled driving wheels on three axles, and two trailing wheels on one axle, usually in a trailing truck. Overview Garratt The Double Pacific type was fairly common for Garratt locomotives, especially those intended for faster passenger service. The first of the type was the Class GF, built by Hanomag for the South African Railways in 1927. The first to be built by Beyer, Peacock & Company, the owner of the Garratt patent, was the G class for the New Zealand Railways Department in 1928. Beyer, Peacock & Company also built the last Double Pacific in 1943, for the Nigerian Railways. Union Garratt The South African Railw ...
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