USATC S100 Class

The United States Army Transportation Corps (USATC) S100 Class is a 0-6-0 steam locomotive that was designed for switching (shunting) duties in Europe and North Africa during World War II. After the war, they were used on railways in Austria, China, Egypt, France, Great Britain, Greece, Iran, Iraq, Israel, Italy, the Netherlands, Palestine, the United States, and Yugoslavia.

USATC S100 class
Former Southern Railway USA class No. 65 preserved at the Kent and East Sussex Railway
Type and origin
Power typeSteam
DesignerHoward G. Hill
BuilderDavenport Locomotive Works (109),
H. K. Porter, Inc (150),
Vulcan Iron Works (123)
Build date1942–1944
Total produced382
Specifications
Configuration:
​
 • Whyte0-6-0T
 • UICC nt
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.4 ft 6 in (1,372 mm)
Minimum curve150 ft (45.72 m) radius
Length29 ft 6 in (8.99 m)
Width9 ft 0 in (2.74 m)
Height12 ft 1+5⁄8 in (3.70 m)
Loco weight100,650 lb (45,654 kilograms)
Fuel typeCoal or Oil
Fuel capacity2,500 lb (1,130 kilograms) coal, or
300 US gallons (1,100 L; 250 imp gal) oil
Water cap.1,200 US gallons (4,500 L; 1,000 imp gal)
Firebox:​
 • Grate areaFirst 50: 19.4 sq ft (1.80 m2),
Remainder: 18.3 sq ft (1.70 m2)
Boiler pressure210 lbf/in2 (1.45 MPa)
Heating surface876 sq ft (81.4 m2) ​
 • Tubes790 sq ft (73 m2)
 • Firebox86 sq ft (8.0 m2)
SuperheaterNone
CylindersTwo, outside
Cylinder size16.5 in × 24 in (419 mm × 610 mm)
Valve gearOutside Walschaerts
Valve type8-inch (203 mm) piston valves
Performance figures
Tractive effort21,630 lbf (96.2 kN)
Factor of adh.4.65
Career
OperatorsUSATC
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