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Pennsylvania Railroad class C1

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Pennsylvania Railroad C1
Type and origin
Power typeSteam
BuilderPennsylvania Railroad
Build date1925, 1927
Total produced90
Specifications
Configuration:
 • Whyte0-8-0
 • UICDh
Gauge4 ft 8+12 in (1,435 mm)
Driver dia.56 in (1.422 m)
Axle load74,000 lb (33.6 t)
Loco weight278,000 lb (126.1 t)
Fuel typeCoal
Boiler pressure250 psi (1.72 MPa)
CylindersTwo
Cylinder size27 in × 30 in (686 mm × 762 mm)
Valve gearWalschaerts
Valve typePiston
Performance figures
Tractive effort76,154 lbf (338.7 kN)
Career
Numbers6550–6639
Retired1948–1953
DispositionAll scrapped

The PRR C1 was the Pennsylvania Railroad's class of 0-8-0 steam locomotive, used in switching service. The 0-8-0 was common on most railroads, but not on PRR; when the railroad needed bigger motive power, they used the 2-8-0 "Consolidation". The PRR wanted the best motive power to handle the switching chores at rail yards and interchanges, and the C1 class was the heaviest two-cylinder 0-8-0 switcher ever produced. Calculated tractive effort was 76,154 lb, based on 78% MEP with 60% maximum cutoff. All C1s were retired between 1948 and 1953, none being preserved.