USRA Heavy Mountain

USRA Heavy Mountain
Type and origin Power type Steam Builder American Locomotive Company (13+25) Baldwin Locomotive Works (2+12) Total produced 15 (plus 37 copies)
Specifications Configuration: ​  • Whyte 4-8-2  • UIC 2′D1′ h2 Gauge 4 ft 8+1⁄2 in (1,435 mm) Wheelbase Coupled: 18 ft 3 in (5.56 m) Locomotive: 40 ft 0 in (12.19 m) Loco & tender: 75 ft 8+1⁄2 in (23.08 m) Axle load 60,000 lb (27,000 kg) Adhesive weight 240,000 lb (110,000 kg) Loco weight 350,000 lb (160,000 kg) Tender weight 172,000 lb (78,000 kg) Total weight 522,000 lb (237,000 kg) Fuel type Coal Fuel capacity 32,000 lb (15,000 kg) Water cap. 10,000 US gal (38,000 L; 8,300 imp gal) Firebox: ​  • Grate area 76.3 sq ft (7.09 m2) Boiler pressure 200 pounds-force per square inch (1,380 kPa; 14.1 kgf/cm2) Heating surface: ​  • Firebox 346 sq ft (32.1 m2)  • Tubes 2,790 sq ft (259 m2)  • Flues 1,323 sq ft (122.9 m2)  • Total surface 4,666 sq ft (433.5 m2) Superheater: ​  • Heating area 10,780 sq ft (1,001 m2) Cylinders Two Cylinder size 28 in × 30 in (711 mm × 762 mm) Valve gear Walschaerts Valve type 14-inch (360 mm) piston valves
Performance figures Tractive effort 58,200 lbf (258.89 kN) Factor of adh. 4.1

The USRA Heavy Mountain 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 light freight locomotive of the USRA types, and was of 4-8-2 wheel arrangement in the Whyte notation, or 2′D1′ in UIC classification.

A total of 15 locomotives were built under the auspices of the USRA.

Table of original USRA allocation

Railroad	Quantity	Class	Road numbers	Notes
Chesapeake and Ohio Railway	5	J-1	539–549
Norfolk and Western Railway	10	K2	116–125
Total	15

Table of copies acquired

Railroad	Quantity	Class	Road numbers	Notes
Chesapeake and Ohio Railway	2	J-1	539–549
Florida East Coast Railway	23	801	801–823
Norfolk and Western Railway	12	K2a	126–137
Total	37

None of the originals built under USRA auspices or any of the subsequent copies were preserved.

References

• Drury, George H. (1993), Guide to North American Steam Locomotives, Waukesha, Wisconsin: Kalmbach Publishing Company, ISBN 0-89024-206-2, LCCN 93041472
• Edson, William D.; Corley, Raymond F. (Autumn 1982). "Locomotives of the Grand Trunk Railway". Railroad History. 147. Boston, Mass.: Railway and Locomotive Historical Society. JSTOR 43520915.
• Huddleston, Eugene L. (2002). Uncle Sam's Locomotives: The USRA and the Nation's Railroads. Bloomington, Ind.: Indiana University Press. ISBN 0-253-34086-1.
• Westcott, Linn H. (1960). Model Railroader Cyclopedia, Volume 1: Steam Locomotives. Milwaukee, Wis.: Kalmbach Publishing Co. ISBN 0-89024-001-9.
• "Standard Heavy 4-8-2 and Light 2-10-2 Locomotives". Railway Age. 65 (24): 1067–1073. December 13, 1918 – via Archive.org.
• "Tentative Specifications for Standard Locomotives". Railway Age. 64 (16): 1039–1041. April 19, 1918 – via Archive.org.