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Largest non-articulated steam locomotive, and the only seven-axle non-articulated steam locomotive ever built. AD60 class: New South Wales Government Railways: 6001-6042 Beyer, Peacock & Company: 1952–1954, 1956 Steam 4-8-4+4-8-4: 255 tonnes (281 short tons) 265 kilonewtons (59,575 lbf) 4,422 kilowatts (5,930 hp)
The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) between 1941 and 1944 and operated by the Union Pacific Railroad in revenue service until 1962.
The first was built in 1928 by American Locomotive Company; at the time, it was the largest locomotive ever built. It had the largest firebox ever applied to a steam locomotive, some 182 square feet (16.9 m 2) in area, to burn Rosebud coal, a cheap low-quality coal. But the firebed was too large for the available draft and the fire burned ...
The 1.2 million-pound, 132-foot long engine is the largest operating steam locomotive in the world. The engine, which was first put into service in 1941, is nearing the end of a 10-state tour.
Originally put into service in 1941, the 4-8-8-4 locomotive, weighing 1.2 million pounds, is one of 25 Big Boys made and is the world's largest steam locomotive.
Union Pacific’s No. 4014 steam locomotive is a massive 132-foot long engine that has been touring the rails of middle America since August. See ‘Big Boy,’ world’s largest steam locomotive ...
Union Pacific 4014 is a preserved 4884-1 class 4-8-8-4 "Big Boy" type steam locomotive owned and operated by the Union Pacific (UP) as part of its heritage fleet.Built in November 1941 by American Locomotive Company (ALCO) in Schenectady, New York, it was assigned to haul heavy freight trains in the Wasatch mountain range.
At 140 ft 2 + 1 ⁄ 2 in (42.74 m) overall, engine and tender, the S1 was the longest reciprocating steam locomotive ever; it also had the heaviest tender (451,840 lb / 205 tonnes), highest tractive effort (76,403 lbf (339.86 kN)) of a passenger steam engine when built and the largest driving wheels (7 feet in diameter) ever used on a ...