Classic Streamliners - TRAIN​CYCLOPEDIA

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A USRA Heavy Pacific Slideshow.

Erie K5 Class Pacific No. 2919.
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Erie Heavy Pacific No. 2919.

USRA Heavy Pacific Steam Locomotive
The USRA Heavy Pacific was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard heavy passenger locomotive of the USRA types, and was 4-6-2 wheel arrangement in the Whyte notation, or 2′C1′ in UIC classification.

A total of 20 locomotives were built under USRA control, with the production split between the Baldwin Locomotive Works and the American Locomotive Company's Richmond plant. All 20 went to the Erie Railroad, who also ordered 11 copies from Baldwin, which were delivered between 1923 and 1926. Lima Locomotive Works also built six locomotives based on the USRA heavy 4-6-2 for the Chicago and Eastern Illinois Railroad, who classified then as their K3 class. None of the originals built under USRA auspices or any of the subsequent copies were preserved.

USRA Heavy Pacific Overview
Type and origin
Power type: Steam
Builder and Quantity Built:
American Locomotive Company: (10+0)
Baldwin Locomotive Works: (10+11)
Lima Locomotive Works: (0+6)
Total produced
Originals: 20
Copies: 17
Specifications
Configuration: 4-6-2
UIC class: 2′C1′ h2
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Driver diameter: 79 in (2,007 mm)
Wheelbase Coupled: 14 feet 0 inches (4.27 m)
Wheelbase Locomotive: 36 feet 2 inches (11.02 m)
Wheelbase Locomotive and tender: 70 feet 8 1⁄2 inches (21.55 m)
Axle load: 60,000 lb (27,000 kg)
Adhesive weight: 180,000 lb (82,000 kg)
Locomotive weight: 300,000 lb (140,000 kg)
Tender weight: 144,000 lb (65,000 kg)
Total weight: 444,000 lb (201,000 kg)
Fuel capacity: Coal
Water capacity: 8,000 US gal (30,000 l; 6,700 imp gal)
Tender capacity: 32,000 lb (15,000 kg)
Firebox:
 • Firegrate area: 70.8 sq ft (6.58 m2)
Boiler pressure: 200 lbf/in2 (1.38 MPa)
Heating surface: 3,808 sq ft (353.8 m2)
 • Tubes: 2,407 sq ft (223.6 m2)
 • Flues: 1,090 sq ft (101 m2)
 • Firebox: 284 sq ft (26.4 m2)
Superheater:
​ • Heating area: 882 sq ft (81.9 m2)
Cylinders: Two, outside
Cylinder size: 27 in × 28 in (686 mm × 711 mm)
Valve gear: Baker
Valve type: 14-inch (356 mm) piston valves
Performance figures
Tractive effort: 43,800 lbf (194.83 kN)
Factor of adhesion: 4.1

See also:

USRA Light Pacific

USRA

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