Baldwin DS-4-4-660

The Baldwin DS-4-4-660 was a four-axle 660 horsepower (490 kW) diesel-electric switcher locomotive built by the Baldwin Locomotive Works at it Eddystone, Pennsylvania factory between 1946 and 1949. It replaced the 660 horsepower (490 kW) VO-660 in their catalog, and was in turn replaced by the 750 horsepower (560 kW) DS-4-4-750. It was the low power companion to Baldwin's DS-4-4-1000 models.

Baldwin DS-4-4-660
A very rusty Baldwin DS-4-4-660 locomotive sits next to the NS main in Roanoke, VA. This is one of "The Lost Engines of Roanoke" and is Chesapeake Western #663.
Type and origin
Power typeDiesel-electric
BuilderBaldwin Locomotive Works
Build dateJune 1946 to May 1949
Total produced139
Specifications
Configuration:
​
 • AARB-B
Gauge4 ft 8+1⁄2 in (1,435 mm)
Length46 ft 6+1⁄4 in (14.18 m)
Width9 ft 11+1⁄4 in (3.03 m)
Height14 ft (4.27 m)
Loco weight196,600 lb (89,200 kg)
Prime mover606NA
RPM range625 rpm max.
Engine typeFour-stroke diesel
AspirationNormally aspirated, solid injection
Displacement1,979 cu in (32.43 L) per cylinder
11,874 cu in (194.58 L) total
GeneratorDC type 480
Traction motorsWest’hse 362-D
CylindersStraight-6
Cylinder size12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm))
Loco brakeAir
Train brakesAir
Performance figures
Power output660 hp (492 kW)
Tractive effort56,500 lb (25,600 kg)
Career
LocaleNorth America

Original owners
RailroadQuantityRoad numbersNotes
American Cyanamid Company113
American Rolling Mill Company11001
Chesapeake Western Railway3661–663661 scrapped, 662 and 663 survive in Roanoke, VA.
Chicago, St. Paul, Minneapolis and Omaha Railway (“Omaha Road”)171
Chicago and North Western Railway31259–1261
Crows Nest Pass Coal11
Escanaba and Lake Superior Railroad1101
Erie Railroad5381–385
Georgia Northern Railway1102
Long Island Rail Road4409–412
New Orleans Public Belt Railroad644–49
Norfolk Southern Railway3661–663
Patapsco and Back Rivers Railroad4306–309
Pennsylvania Railroad995957–5966, 9000–9049, 9110–9121, 9210–9236PRR Class BS-6a
Sloss-Sheffield Steel130
Tennessee Valley Authority1100
Wabash Railroad2201–202
Wyandotte Southern Railroad1D100
Wyandotte Terminal Railroad1104
Total139

References
  • Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 158. ISBN 0-87564-715-4.
  • Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Pasadena, California: Interurban Press. ISBN 0-916374-93-9.
  • Pinkpank, Jerry A (1973). The Second Diesel Spotter's Guide. Kalmbach Books. pp. 282, 287. ISBN 0-89024-026-4.
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