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+12 in (1,435 mm)
Length46 ft 6+14 in (14.18 m)
Width9 ft 11+14 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+34 in × 15+12 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

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Railroad Quantity Road numbers Notes
American Cyanamid Company 1 13
American Rolling Mill Company 1 1001
Chesapeake Western Railway 3 661–663 661 scrapped, 662 and 663 survive in Roanoke, VA.
Chicago, St. Paul, Minneapolis and Omaha Railway (“Omaha Road”) 1 71
Chicago and North Western Railway 3 1259–1261
Crows Nest Pass Coal 1 1
Escanaba and Lake Superior Railroad 1 101
Erie Railroad 5 381–385
Georgia Northern Railway 1 102
Long Island Rail Road 4 409–412
New Orleans Public Belt Railroad 6 44–49
Norfolk Southern Railway 3 661–663
Patapsco and Back Rivers Railroad 4 306–309
Pennsylvania Railroad 99 5957–5966, 9000–9049, 9110–9121, 9210–9236 PRR Class BS-6a
Sloss-Sheffield Steel 1 30
Tennessee Valley Authority 1 100
Wabash Railroad 2 201–202
Wyandotte Southern Railroad 1 D100
Wyandotte Terminal Railroad 1 104
Total 139

References

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  • 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.