transport: Pennsylvania Railroad 5550

Evidence: 100 • authority: 72

Pennsylvania Railroad 5550, named Dave Fink, is a mainline duplex drive steam locomotive under construction in the United States. With an estimated completion by 2030, the locomotive will become the 53rd example of the Pennsylvania Railroad's T1 steam locomotive class and the only operational locomotive of its type, as well as the largest steam locomotive built in the United States since 1952 and the only existent duplex locomotive in the world. The estimated cost of PRR 5550 Dave Fink was originally $10 million, but an updated projected cost of $7 million was released with the acquisition of an existing long-haul tender from the Western New York Railway Historical Society in August 2017. C…

Evidence: 36 • authority: 72

The Pennsylvania Railroad (reporting mark PRR), officially the Pennsylvania Railroad Company, also known as the "Pennsy," was an American Class I railroad established in 1846 and headquartered in Philadelphia. In 1882, it was the largest railroad (by traffic and revenue), transportation enterprise, and corporation in the world. Over its existence, the Pennsylvania Railroad acquired, merged with, or owned part of at least 800 other rail lines and companies. In the 1920s, the company carried several times more traffic than other Class I railroads of comparable length, such as the Union Pacific and Atchison, Topeka & Santa Fe railroads, and by the end of 1926, it operated 11,640.66 miles (18,7…

Evidence: 25 • authority: 88

The Pennsylvania Railroad GG1 Electric Locomotive: A Retrospective. Abstract This paper is a historical review of the design and operation of the Pennsylvania Railroad’s class GG1 electric locomotive over its heavily-trafficked New York City-Washington, DC main line during the period 1934–1983. The locomotive was designed in-house by the railroad in corroboration with Baldwin Locomotive, General Electric and Westinghouse Electric following competitive tests of several electric locomotive designs. Its outstanding performance and long operating life has resulted in it being generally considered the most highly regarded electric locomotive in North America. The Pennsylvania Railroad embarked i…

Evidence: 21 • authority: 80

New Atlantic Type of Passenger Locomotive on the Pennsylvania Railroad

Evidence: — • authority: 72

The Chesapeake and Ohio class H-8 is a class of 60 simple articulated 2-6-6-6 steam locomotives built by the Lima Locomotive Works in Lima, Ohio between 1941 and 1948, operating until the mid 1950s. The locomotives were among the most powerful steam locomotives ever built and hauled fast, heavy freight trains for the railroad. Only two units were preserved; Nos. 1601 and 1604.

Evidence: — • authority: 72

A steam locomotive, also known as an iron horse, is a type of locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, coke, oil or, rarely, wood) to heat water in the locomotive's boiler to the point where it becomes gaseous and its volume increases 1,600 to 1,700 times. Functionally, it is a self-propelled steam engine on wheels. In most locomotives the steam is admitted alternately to each end of its cylinders in which pistons are mechanically connected to the locomotive's main wheels. Fuel and water supplies are usually carried with the locomotive, either on the locomotive itself…

Evidence: — • authority: 72

A 4-4-4-4 steam locomotive, in the Whyte notation for describing locomotive wheel arrangements, has a four-wheel leading truck, two sets of four driving wheels, and a four-wheel trailing truck. While it would be possible to make an articulated locomotive of this arrangement, the only 4-4-4-4s ever built were duplex locomotives—with two sets of cylinders driving two sets of driven wheels in one rigid frame, essentially a 4-8-4 with divided drive.

Evidence: — • authority: 72

The Pennsylvania Railroad (PRR) class T1 duplex-drive 4-4-4-4 steam locomotives, introduced in 1942 with two prototypes and later in 1945-1946 with 50 production examples, were the last steam locomotives built for the PRR and arguably its most controversial. They were ambitious, technologically sophisticated, powerful, fast and distinctively streamlined by Raymond Loewy. However, they were also prone to wheelslip both when starting and at speed, in addition to being complicated to maintain and expensive to run. The PRR decided in 1948 to place diesel locomotives on all express passenger trains, leaving unanswered questions as to whether the T1's flaws were solvable, especially taking into a…