USRA Heavy Pacific information

Specifications
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	79 in (2,007 mm)
Wheelbase	Coupled: 14 ft 0 in (4.27 m); Locomotive: 36 ft 2 in (11.02 m); Loco & tender: 70 ft 8+1⁄2 in (21.55 m);
Axle load	60,000 lb (27,000 kg)
Adhesive weight	180,000 lb (82,000 kg)
Loco 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 cap.	8,000 US gal (30,000 L; 6,700 imp gal)
Tender cap.	32,000 lb (15,000 kg)
Firebox:
• Grate area	70.8 sq ft (6.58 m2)
Boiler pressure	200 psi (1.38 MPa)
Heating surface:
• Firebox	284 sq ft (26.4 m2)
• Tubes	2,407 sq ft (223.6 m2)
• Flues	1,090 sq ft (101 m2)
• Total surface	3,808 sq ft (353.8 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

Type and origin
Type and origin
Power type	Steam
Builder	American Locomotive Company (10+0); Baldwin Locomotive Works (10+11); Lima Locomotive Works (0+6);
Total produced	Originals: 20; Copies: 88;

USRA Heavy Pacific
USRA Heavy Pacific
Power type
Type and origin
Power type	Steam
Builder	American Locomotive Company (10+0); Baldwin Locomotive Works (10+11); Lima Locomotive Works (0+6);
Total produced	Originals: 20; Copies: 88;
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	79 in (2,007 mm)
Wheelbase	Coupled: 14 ft 0 in (4.27 m); Locomotive: 36 ft 2 in (11.02 m); Loco & tender: 70 ft 8+1⁄2 in (21.55 m);
Axle load	60,000 lb (27,000 kg)
Adhesive weight	180,000 lb (82,000 kg)
Loco 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 cap.	8,000 US gal (30,000 L; 6,700 imp gal)
Tender cap.	32,000 lb (15,000 kg)
Firebox:
• Grate area	70.8 sq ft (6.58 m2)
Boiler pressure	200 psi (1.38 MPa)
Heating surface:
• Firebox	284 sq ft (26.4 m2)
• Tubes	2,407 sq ft (223.6 m2)
• Flues	1,090 sq ft (101 m2)
• Total surface	3,808 sq ft (353.8 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
Tractive effort
Performance figures
Tractive effort	43,800 lbf (194.83 kN)
Factor of adh.	4.1

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.

USRA Heavy Pacific information

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