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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.
[3] [4] Union Pacific therefore decided to design a new locomotive that could handle the run by itself: [5] faster and more powerful than the compound 2-8-8-0s that UP tried after World War I, able to pull long trains at a sustained speed of 60 miles per hour (100 km/h) once past mountain grades. [5] A close-up of No. 4014's running gear in 2019
A Big Boy locomotive.This example is Union Pacific 4014. 4-8-8-4 wheel arrangement. A 4-8-8-4 in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with a four-wheel leading truck, two sets of eight driving wheels, and a four-wheel trailing truck.
No. 4014 in service with the UP Heritage Steam collection [3] 4884-2 Big Boy: Union Pacific: 4020-4024 ALCO: 1944 Steam 4-8-8-4: 548 tonnes (604 short tons) No. 4023 on static display. EQJ1: China Railway: 北京6001 Beijing Feb. 7th 1969 Diesel-hydraulic D'D' 183.5 tonnes (202.3 short tons) 595 kilonewtons (133,821 lbf) starting
The restored steam engine from 1941 pulled into action after a call for help.
No. 4015 operates behind the water cars, providing positive train control data, dynamic braking, and additional motive force to the train as necessary. [2] [3] It is painted in a heritage livery with a green nose and silver trucks, which pay homage to the paint scheme worn by E9s 949, 951, and 963B. As of 2024, 4014 no longer needs a helper ...
The largest examples were developed in the United States, where the Union Pacific Big Boy 4-8-8-4s and the Allegheny H-8 2-6-6-6s were some of the largest steam locomotives ever built, with Big Boy 4014 remaining as the largest, and last of its kind, to still operate. Many schemes for articulation were developed over the years.
The most popular scale in Japan. For models of Shinkansen high speed trains and other systems using standard gauge track, the international N scale standard ratio of 1:160 is commonly used. TT9: 1:120: 9 mm (0.354 in) Used also in New Zealand. HOn 2 + 1 ⁄ 2: 1:87: 9 mm (0.354 in) Used for 2 ft 6 in (762 mm) narrow gauge. 13 mm: 1:80: 13 mm (0 ...