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
AAR wheel arr	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

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.

Original owners

Railroad	Quantity	Road numbers
American Cyanamid Company	1	13
American Rolling Mill Company	1	1001
Chesapeake Western Railway	3	661–663
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
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

Dorin, Patrick C. (1972). Chicago and North Western Power. 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.

Diesel locomotives built by the Baldwin Locomotive Works

Early units	Experimental units Baldwin pre-production switchers 4-8+8-4-750/8-DE

Switchers	VO-660 RS-4-TC DS-4-4-660 DS-4-4-750 S-8 VO-1000 DS-4-4-1000 S-12

Road switchers	DRS-4-4-1000 RS-12 DRS-4-4-1500 AS-16 DRS-6-4-1500 AS-416 DRS-6-6-1500 AS-616

Transfer units	DT-6-6-2000 RT-624

Cab units	DR-12-8-1500/2 DR-6 series DR-4-4-15 RF-16 RP-210

Export units	Soviet Railways ДБ20 DRS-6-4-660 DRS-6-4-750 DRS-6-4-1000 RF-615E

(See also: List of Baldwin diesel locomotives)

Diesel-electric switcher locomotives

Alco	ALCO Boxcab ALCO 600 HH600 HH660 HH900 HH1000 S-1 S-2 S-3 S-4 S-5 S-6 T-6 SB-8/SSB-9

Baldwin	VO-660 DS-4-4-660 DS-4-4-750 S-8 RS-4-TC VO-1000 DS-4-4-1000 S-12

Fairbanks-Morse	H-10-44 H-12-44 H-12-44TS H-12-46

GE	60-ton boxcab 100-ton boxcab 600-hp centercab 1000-hp centercab DEY-2 EN-6 25-ton 35-ton 43-ton 44-ton 45-ton 50-ton 60-ton 65-ton 70-ton 80-ton 95-ton 100-ton 110-ton 125-ton 126-ton 128-ton 1800-hp transfer 2000-hp transfer U5B U6B

GM/EMD	SC, SW, NC, NC1, NC2, NW, NW1, NW1A, NW4, T NW2 NW3 NW5 TR1 SW1 SW7 SW8 SW9 SW600 SW900 SW1000 SW1001 SW1200 SW1500 SW1504 MP15DC MP15AC MP15T RS1325 GMD1

Lima-Hamilton	LS-750 LS-800 LS-1000 LS-1200

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