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Chesapeake and Ohio USRA Heavy Mountain No. 544.

Chesapeake and Ohio USRA Heavy Mountain No. 544.

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USRA Heavy Mountain Steam Locomotive
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.

Original USRA Allocation List

Chesapeake and Ohio Railway

Quantity: 5
Class: J-1
Road numbers: 539–549

Norfolk and Western Railway

Quantity: 10
Class: K2
Road numbers: 116–125

Total: 15

List of Copies Acquired

Chesapeake and Ohio Railway

Quantity: 2
Class: J-1
Road numbers: 539–549

Florida East Coast Railway

Quantity: 23
Class: 801
Road numbers: 801–823

Norfolk and Western Railway

Quantity: 12
Class: K2a
Road numbers: 126–137

Total: 37

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

USRA Heavy Mountain Overview
Type and origin
Power type: Steam
Builders and Number Built (Originals/Copies):
 American Locomotive Company: (13+25)
 Baldwin Locomotive Works: (2+12)
Total produced: 15 (plus 37 copies)
Specifications
Configuration: 4-8-2
UIC class: 2′D1′ h2
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Wheelbase: Coupled: 18 ft 3 in (5.56 m)
Wheelbase: Locomotive: 40 ft 0 in (12.19 m)
Wheelbase: Loco and 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)
Locomotive 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 capacity: 10,000 US gal (38,000 l; 8,300 imp gal)
Firebox:
 • Firegrate 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: 4,666 sq ft (433.5 m2)
 • Tubes: 2,790 sq ft (259 m2)
 • Flues: 1,323 sq ft (122.9 m2)
 • Firebox: 346 sq ft (32.1 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 adhesion: 4.1

See also:

USRA