A Brief History Of This EngineThe Union Pacific Centennial is the largest and most powerful diesel locomotive ever built.
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Union Pacific No.4014 is a Big Boy class steam locomotive having a 4-8-8-4 wheel arrangement. They are the heaviest single expansion steam locomotive ever built, weighing about 1,200,000 pounds.
With a power output of 12,000 hp, the WAG 12 is twice as powerful as its immediate predecessor, WAG-9, making it one of the most powerful freight locomotives in the world.
Union Pacific reached out to EMD for more power, and the result was the behemoth EMD DDA40X. Often cited as both the largest and most powerful diesel-electric locomotive ever built, the 98-foot, 5-inch, 475,830-pound machine is staggering. The prime movers are a pair of EMD 16-645E3A diesels.
One of the most beautiful steam locomotives ever built, the S1 was designed by Raymond Loewe. Poor balancing caused wheel-spin and only one was ever built, for the Pennsylvania Railroad in 1939.
The Fairy Queen is the oldest running train in the world. As the Guinness Book of Records documented, the Fairy Queen in India is the steam locomotive with the oldest running history worldwide.
The Big Boy has the longest engine body of any reciprocating steam locomotive, longer than two 40-foot buses. They were also the heaviest reciprocating steam locomotives ever built; the combined weight of the 772,250 lb (350,290 kg) engine and 436,500 lb (198,000 kg) tender outweighed a Boeing 747.
Steam locomotives can be more powerful than diesel locmotives depending upon the size, capacity, weight and other specifications of the different engines. Steam locos used coal and/ or fire wood to heat the water, and hence the amount of heat and steam generated would not be/ can't be even all the time.
Puffing Billy is the world's oldest surviving steam locomotive, constructed in 1813–1814 by colliery viewer William Hedley, enginewright Jonathan Forster and blacksmith Timothy Hackworth for Christopher Blackett, the owner of Wylam Colliery near Newcastle upon Tyne, in the United Kingdom.
Of the eight remaining Big Boys in existence, No.4014 is the only one operating today. The Big Boys were about 133 feet long and weigh 1.2 million pounds. Because of their great length, the frames of the Big Boys are “hinged,” or articulated, to allow them to negotiate curves.