USRA Light Pacific

Specifications
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	73 in (1,854 mm)
Wheelbase	Coupled: 13 ft 0 in (3.96 m); Locomotive: 34 ft 9 in (10.59 m); Loco & tender: 68 ft 7+1⁄2 in (20.92 m);
Axle load	55,000 lb (25,000 kilograms)
Adhesive weight	165,000 lb (75,000 kilograms)
Loco weight	270,000 lb (120,000 kilograms)
Tender weight	188,000 lb (85,000 kilograms)
Total weight	414,000 lb (188,000 kilograms)
Fuel capacity	16 t (16 long tons; 18 short tons)
Water cap.	10,000 US gal (38,000 L; 8,300 imp gal)
Firebox:
• Grate area	66.7 sq ft (6.20 m2)
Boiler pressure	200 psi (1.38 MPa)
Heating surface	3,333 sq ft (309.6 m2)
• Tubes	2,091 sq ft (194.3 m2)
• Flues	981 sq ft (91.1 m2)
• Firebox	234 sq ft (21.7 m2)
Superheater:;
• Heating area	794 sq ft (73.8 m2)
Cylinders	Two
Cylinder size	25 in × 28 in (635 mm × 711 mm)
Valve type	14-inch (356 mm) piston valves

Type and origin
Type and origin
Power type	Steam
Builder	American Locomotive Company (ALCO); Baldwin Locomotive Works (BLW);
Build date	1919–1920
Total produced	106, plus copies

USRA Light Pacific
USRA Light Pacific
	Atlantic Coast Line 1504 on static display in Jacksonville, Florida
Power type
Type and origin
Power type	Steam
Builder	American Locomotive Company (ALCO); Baldwin Locomotive Works (BLW);
Build date	1919–1920
Total produced	106, plus copies
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h2
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	73 in (1,854 mm)
Wheelbase	Coupled: 13 ft 0 in (3.96 m); Locomotive: 34 ft 9 in (10.59 m); Loco & tender: 68 ft 7+1⁄2 in (20.92 m);
Axle load	55,000 lb (25,000 kilograms)
Adhesive weight	165,000 lb (75,000 kilograms)
Loco weight	270,000 lb (120,000 kilograms)
Tender weight	188,000 lb (85,000 kilograms)
Total weight	414,000 lb (188,000 kilograms)
Fuel capacity	16 t (16 long tons; 18 short tons)
Water cap.	10,000 US gal (38,000 L; 8,300 imp gal)
Firebox:
• Grate area	66.7 sq ft (6.20 m2)
Boiler pressure	200 psi (1.38 MPa)
Heating surface	3,333 sq ft (309.6 m2)
• Tubes	2,091 sq ft (194.3 m2)
• Flues	981 sq ft (91.1 m2)
• Firebox	234 sq ft (21.7 m2)
Superheater:;
• Heating area	794 sq ft (73.8 m2)
Cylinders	Two
Cylinder size	25 in × 28 in (635 mm × 711 mm)
Valve type	14-inch (356 mm) piston valves
Tractive effort
Performance figures
Tractive effort	40,750 lbf (181.3 kN)
Factor of adh.	4.1
Preserved
Career
Preserved	Two (Atlantic Coast Line 1504 and Grand Trunk Western 5632)
Disposition	One original under restoration and one copy on static display, remainder scrapped

The USRA Light 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. It was the standard light passenger locomotive of the USRA types, with a 4-6-2 wheel arrangement in the Whyte notation, or 2′C1′ in UIC classification.

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