The Baldwin DS-4-4-660 was a four-axle 660 horsepower (490 kW) diesel-electric switcher 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.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (June 2017)

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 type Diesel-electric Builder Baldwin Locomotive Works Build date June 1946 to May 1949 Total produced 139
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Length 46 ft 6+1⁄4 in (14.18 m) Width 9 ft 11+1⁄4 in (3.03 m) Height 14 ft (4.27 m) Loco weight 196,600 lb (89,200 kg) Prime mover 606NA RPM range 625 rpm max. Engine type Four-stroke diesel Aspiration Normally aspirated, solid injection Displacement 1,979 cu in (32.43 L) per cylinder 11,874 cu in (194.58 L) total Generator DC type 480 Traction motors West’hse 362-D Cylinders Straight-6 Cylinder size 12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)) Loco brake Air Train brakes Air
Performance figures Power output 660 hp (492 kW) Tractive effort 56,500 lb (25,600 kg)
Career Locale North America

Original owners

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.