USRA Light Santa Fe

USRA Light Santa Fe
Type and origin
Power type	Steam
Builder	American Locomotive Company, Baldwin Locomotive Works
Specifications
AAR wheel arr.	2-10-2
UIC classification	1′E1′ h2
Gauge	4 ft 8 1⁄2 in (1,435 mm)
Leading wheel diameter	33 in (838 mm)
Driver diameter	57 in (1,448 mm)
Trailing wheel diameter	43 in (1,092 mm)
Wheelbase	40 ft 4 in (12.29 m)
Length	52 ft 10 in (16.10 m) without tender
Width	10 ft 8 in (3.25 m)
Height	15 ft 0 in (4.57 m)
Weight on drivers	274,000 lb (124.3 tonnes)
Locomotive weight	352,000 lb (159.7 tonnes)
Locomotive and tender combined weight	540,300 lb (245.1 tonnes)
Fuel type	Soft coal (bituminous)
Boiler pressure	200 lbf/in2 (1.38 MPa)
Firegrate area	76.3 sq ft (7.09 m2)
Heating surface: – Tubes	2,970 sq ft (275.9 m2)
– Flues	1,323 sq ft (122.9 m2)
– Firebox	373 sq ft (34.7 m2)
– Total	4,666 sq ft (433.5 m2)
Superheater area	1,085 sq ft (100.8 m2)
Cylinders	Two
Cylinder size	27 in × 32 in (686 mm × 813 mm)
Valve gear	Southern (see drawing)
Performance figures
Tractive effort	69,400 lbf (308.7 kN)
Factor of adhesion	3.95

General arrangement drawing

The USRA Light Santa Fe 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. These locomotives were of 2-10-2 wheel arrangement in the Whyte notation, or 1′E1′ in UIC classification; this arrangement was commonly named "Santa Fe" in the United States. At the time, the Santa Fe was the largest non-articulated type in common use, primarily in slow drag freight duty in ore or coal service.

A total of 94 of these locomotives were constructed under the auspices of the USRA. They went to the following railroads:

Only one USRA Light 2-10-2 survives: DM&IR 506 is on display at the National Railroad Museum in Green Bay, Wisconsin

References