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The Atchison, Topeka & Santa Fe bought ten 4-6-4s (road number 3450 through 3459) from the Baldwin Locomotive Works in 1927. Curiously, Santa Fe did not refer to these locomotives as Hudsons. Instead, the Santa Fe classified them as an extension of the 3400 class of Pacifics.
The new 4-6-4 locomotive had a slightly larger boiler evaporative heating surface, 24 sq. ft. more of firebox and 14 sq. ft. more of grate area. This new design could produce much more steam per square foot of heating surface and needed a much larger superheater to maintain the same steam temperature as the K-5's.
12 Μαΐ 2023 · In a significant enhancement of its fleet, in 1938, the Milwaukee Road acquired an additional six 4-6-4 locomotives from the American Locomotive Company (Alco). These locomotives, some of the fastest ever built, were designated to power the esteemed and swift regional Hiawatha services.
The Atchison, Topeka and Santa Fe Railway 's 3460 class comprised six 4-6-4 "Super Hudson" type steam locomotives built in 1937 by the Baldwin Locomotive Works for service between La Junta, Colorado and Chicago, Illinois, a fairly flat division of the railroad suited for the 4-6-4 type.
21 Ιουν 2006 · The 4-6-4 was an ideal locomotive for fast passenger service in level territory. It was a stable riding engine at speed, and it had sufficient power to rapidly accelerate its train after stops or stretches of slow running.
Under the Whyte notation for the classification of locomotives, 4-6-4 represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels. In France where the type was first used, it is known as the Baltic while it became known as the Hudson in most of North America.
4-6-4 HUDSON STEAM LOCOMOTIVE. Under the Whyte notation for the classification of locomotives, 4-6-4 represents the wheel arrangement of four leading wheels, six powered and coupled driving wheels and four trailing wheels.
