Baldwin DS-4-4-1000

The Baldwin DS-4-4-1000 were two models of four-axle 1,000 horsepower (746 kW) diesel-electric switching locomotives built by the Baldwin Locomotive Works between 1946 and 1951. The first models (56 locomotives) was 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)
An ex-MKT DS-4-4-1000 (rebuilt with and EMD engine) on display in Parsons, Kansas.
Type and origin
Power typeDiesel-electric
BuilderBaldwin Locomotive Works
ModelDS-4-4-1000 (608NA)
Build dateJune 1946 – January 1948
Total produced56
Specifications
Configuration:
​
 • AARB-B
Gauge4 ft 8 1⁄2 in (1,435 mm)
Prime moverBaldwin 608NA
Engine typeFour-stroke diesel
AspirationNormally aspirated, solid injection
Displacement1,979 cu in (32.43 l) per cylinder
15,831 cu in (259.42 l) total
GeneratorDC generator
Traction motorsDC traction motors
CylindersStraight-8
Cylinder size12 3⁄4 in × 15 1⁄2 in (324 mm × 394 mm)
TransmissionElectric
Loco brakeAir
Train brakesAir
Performance figures
Power output1,000 hp (746 kW)
Career
LocaleNorth 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 typeDiesel-electric
BuilderBaldwin Locomotive Works
ModelDS-4-4-1000 (606SC)
Build dateJanuary 1948 – November 1951
Total produced446
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 weight230,000 lb (100,000 kg)
Prime moverBaldwin 606SC
RPM range625 rpm max.
Engine typeFour-stroke diesel
AspirationTurbocharged
Displacement1,979 cu in (32.43 l) per cylinder
11,874 cu in (194.58 l) total
GeneratorWestinghouse 480DC
Traction motorsWestinghouse 362-D, 4 off
CylindersStraight-6
Cylinder size12 3⁄4 in × 15 1⁄2 in (324 mm × 394 mm)
Loco brakeAir
Train brakesAir
Performance figures
Power output1,000 hp (746 kW)
Tractive effort57,500 lb (26,100 kg)
Career
LocaleNorth America

Original owners

608NA engine
RailroadQuantityRoad NumbersNotes
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
Total56

606SC engine
RailroadQuantityRoad NumbersNotes
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
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
Total446

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.
  • Pinkpank, Jerry A (1973). The Second Diesel Spotter's Guide. Kalmbach Books. pp. 282, 289. ISBN 0-89024-026-4.
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