Baldwin DS-4-4-1000

The Baldwin DS-4-4-1000 were two models of four-axle 1,000 horsepower (746 kW) diesel–electric switcher locomotives built by the Baldwin Locomotive Works between 1946 and 1951. The first models (56 locomotives) were powered by an 8-cylinder normally aspirated prime mover, but from 1948, a change was made to the second model powered by a 6-cylinder turbocharged engine. These two models replaced the VO-1000 in Baldwin's catalogue, and were in turn replaced by the S-12 in 1951.

Baldwin DS-4-4-1000-NA (608NA)
Baldwin DS-4-4-1000 #41, of the Chicago Great Western at a yard in Chicago, Illinois on September 10, 1967
Type and origin Power type Diesel–electric Builder Baldwin Locomotive Works Model DS-4-4-1000 (608NA) Build date June 1946 – January 1948 Total produced 56
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Prime mover Baldwin 608NA Engine type Four-stroke diesel Aspiration Normally aspirated, solid injection Displacement 1,979 cu in (32.43 L) per cylinder 15,831 cu in (259.42 L) total Generator DC generator Traction motors DC traction motors Cylinders Straight-8 Cylinder size 12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm) Transmission Electric Loco brake Air Train brakes Air
Performance figures Power output 1,000 hp (746 kW)
Career Locale North America

Balwin DS-4-4-1000-SC (606SC)
Pennsylvania Railroad DS4-4-1000-SC #5586 in Conway Yard, Conway, Pennsylvania (date unknown)
Type and origin Power type Diesel–electric Builder Baldwin Locomotive Works Model DS-4-4-1000 (606SC) Build date January 1948 – November 1951 Total produced 446
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 230,000 lb (100,000 kg) Prime mover Baldwin 606SC RPM range 625 rpm max. Engine type Four-stroke diesel Aspiration Turbocharged Displacement 1,979 cu in (32.43 L) per cylinder 11,874 cu in (194.58 L) total Generator Westinghouse 480DC Traction motors Westinghouse 362-D, 4 off 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 1,000 hp (746 kW) Tractive effort 57,500 lb (26,100 kg)
Career Locale North America

Original owners

608NA engine

Railroad	Quantity	Road numbers	Notes
Belt Railway of Chicago	1	405
Copper Range Railroad	2	100–101
Detroit Terminal Railroad	1	103
Erie Railroad	2	600–601
Missouri-Kansas-Texas Railroad	11	1000–1010	renumbered 22–32 in 1960; rebuilt by EMD with 1000-hp 12-567C engines between February 1959 and April 1960
New York, Chicago and St. Louis Railroad ("Nickel Plate Road")	2	100–101
Norfolk Southern Railway	2	1001–1002
Reading Company	14	26–39
St. Louis Southwestern Railway ("Cotton Belt")	5	1023–1027
Seaboard Air Line Railroad	8	1417–1424
U.S. Steel, Geneva Steel Division	6	21–26
Western Maryland Railway	2	133–134
Total	56

606SC engine

Railroad	Quantity	Road numbers	Notes
Akron and Barberton Belt Railroad	1	26
American Smelting and Refining Company	2	101–102
Atchison, Topeka and Santa Fe Railway	41	2200 (second), 2260–2299
Atlanta and West Point Rail Road	2	676–677
Baldwin Locomotive Works (test)	1	100DF	Dual Fuel experiment, rebuilt to standard specification and sold to Patapsco and Back Rivers Railroad #335
Baltimore and Ohio Railroad	49	376–399, 438–462	renumbered 9225–9273
Bessemer and Lake Erie Railroad	1	282	to Geneva Steel #38
Calumet and Hecla Mining Company	2	201–202	to Escanaba and Lake Superior
Canadian Pacific Railway	11	7065–7075	built by Baldwin Locomotive Works; 1 preserved in Toronto (7069)
Central of Georgia Railway	2	36–37
Central Railroad of Pennsylvania (Central Railroad of New Jersey)	3	1073–1075
Chicago and North Western Railway	5	1018–1022
Chicago Great Western Railway	10	32–41
Chicago, Milwaukee, St. Paul and Pacific Railroad ("Milwaukee Road")	10	1692–1697, 1901–1904	renumbered 940–949
Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road")	2	99–100
Erie Railroad	15	602–616
Georgia Railroad	1	921
Ironton Railroad	2	750–751	750 to Patapsco and Back Rivers #348; 751 to Conrail #8354
Kentucky and Indiana Terminal Railroad	2	53–54
Lehigh Valley Railroad	8	140–148
Long Island Rail Road	1	450
Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line")	2	311–312
Missouri Pacific Railroad	17	9120–9127, 9133–9141	renumbered 1066–1073, 1074–1082
Missouri Pacific Railroad (St. Louis, Brownsville and Mexico Railway)	8	9148–9149, 9162–9167	renumbered 1083, —, 1092–1097
Oakland Terminal Railway	1	101
Oliver Iron Mining Company	5	928–932
Patapsco and Back Rivers Railroad	8	337–344
Pennsylvania Railroad	136	5550–5590, 5968–5979, 9050–9079, 9122–9275, 9434	PRR Class BS-10a
Reading Company	30	700–729
St. Louis-San Francisco Railway ("Frisco")	4	238–241
Seaboard Air Line Railroad	27	1435–1461	to Seaboard Coast Line Railroad #51–73
Southern Railway	5	2285–2289
Southern Pacific Company	10	1393–1402
Terminal Railroad Association of St. Louis	2	602–603
Union Pacific Railroad	5	1206–1210
United States Army Corps of Engineers	2	L-4, W8380
U.S. Steel, Carnegie-Illinois Steel Division	3	74–76
U.S. Steel, Geneva Steel Division	6	27–32
Wabash Railroad	1	304	rebuilt as calf (without a cab) in 1961 after collision damage
Western Railway of Alabama	1	630
Total	446

References

• Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 161. 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.
• Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Kalmbach Books. pp. 282, 289. ISBN 0-89024-026-4.

External links

• Baldwin DS-4-4-1000 roster
• Preserved Baldwin and Lima locomotives
• DS-4-4-1000 — Original owners