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At the time of construction (1972) one of the world's most powerful locomotives. Currently in operation as of May 2022 with the revised classification of Re 620. Shen 12 Shenhua Mining Group: HXD1.7: CRRC Zhuzhou Electric 3×Bo'Bo' 276 tonnes (304 short tons) 1,140 kilonewtons (256,282 lbf) starting 14,400 kilowatts (19,311 hp) continuous rating
The Big Boy has the longest engine body of any reciprocating steam locomotive, longer than two 40-foot buses. [12] 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. [12]
The East African Railways 4-8-2+2-8-4 59 class Garratts were the largest and most powerful steam locomotives to run on metre gauge, having a large 70-square-foot (6.5-square-metre) grate and a tractive effort of 83,350 pounds-force (370.76 kilonewtons). The 34 oil-fired locomotives remained in regular service until 1980.
No. 4014 is the largest, heaviest, and most powerful operational steam locomotive in the world. [citation needed] Two of Union Pacific's Challengers survived into preservation. Challenger #3985 was the largest operational steam locomotive in the world until the restoration of UP 4014. It was taken out of service in October 2010 due to ...
They hope to use it as a platform for developing "the world's cleanest, most powerful passenger locomotive", capable of speeds up to 130 mph (210 km/h). Named "Project 130", it aims to break the world steam-train speed record set by LNER Class A4 4468 Mallard in the UK at 126 mph (203 km/h).
Baldwin also produced their most powerful steam engines in history, the 2-8-8-4 "Yellowstone" for the Duluth, Missabe & Iron Range Railway. The Yellowstone could put down over 140,000 lbf (622.8 kN) of Tractive force. They routinely hauled 180 car trains weighing over 18,000 short tons (16,071 long tons; 16,329 t).
For manufacturer EMD, the construction of the world's most powerful single frame locomotive was a sign of the company's dominance of the North American diesel locomotive market, with only GE Transportation an equal competitor. The DDA40X also pioneered a number of new technologies that would go on to be incorporated in future EMD designs.
Engine No 6, also called The Sir William Prescott, has been restored to running order and is the largest fully operational triple-expansion steam engine in the world. [4] It may be seen in steam on various weekends throughout the year, and as a static display every Sunday between March and November. [5] The other engine, Engine No 7, is named ...