Why the Big Boy 4014 is such a badass train?

Its girth requires a 4-8-8-4 wheel configuration to keep it rock-steady on the rails. With a puny 7,000 horsepower, Big Boys had a maximum tractive power of 135,375 pounds, all to pull huge loads of freight across steep grades in Utah's Wasatch Mountains and the Rockies.



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The class J-1 and J-3a Hudsons of 1927 had 79 inch drivers. They were fast, powerful, very well proportioned, good looking, and may have been the best known steam locomotive. Honorable Mentions: CMStP&P Class F7.

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Shen24 with 24 axles and a power output of 28MW or almost 40,000 horsepower, it is the world's most powerful electric locomotive.

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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.

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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.

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The Big Boys were built for power. They did the work of three smaller engines, pulling 120-car, 3800 ton freight trains at forty miles per hour in the mountains of Utah and Wyoming. With power, though, comes weight - larger cylinders, pistons, drive rods, boiler and firebox.

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Therefore I say it was and is the largest steam engine that was ever created... There was a machine called the Allegheny type which I think was a 4-6-6-6 which some believe was actually more powerfull and heavier than the Big Boy.

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If the diesel engine referenced is the modern diesel electric locomotive that has been accompanying 4014 in its travels, my understanding is that Union Pacific utilizes it to assist with overall fuel efficiency and to provide regenerative braking. This helps with operating costs and provides a better level of safety.

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Steam locomotives are no longer used to transport passengers or products because electric and diesel locomotives are faster, more efficient, and easier to maintain. The locomotives that are still running are a piece of history dating back to the 1800's that really put into perspective just how far we've come!

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The Flying Scotsman: World's most famous steam train returns home after 100 years. The Flying Scotsman made a historic journey to celebrate its 100 year anniversary. If you know anything about trains, you've probably heard of The Flying Scotsman.

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Mallard: The world's fastest steam locomotive | National Railway Museum.

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If China is the largest exporter of rail technology in the world, its neighbour Japan is certainly the most technologically advanced manufacturer on the market. Having launched the first class of bullet trains in 1964, the country has continuously updated its models according to the latest technological advancements.

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New York Central's 20th Century Limited was dubbed “The Greatest Train Ever Made.”

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