Baldwin DS-4-4-750

Baldwin DS-4-4-750
Type and origin
Power type Diesel-electric
Builder Baldwin Locomotive Works
Model DS-4-4-750
Build date July 1949 to February 1951
Total produced 53
Specifications
Configuration:
 ​
 • AAR B-B
 • UIC B′B′
Gauge 4 ft 8 1⁄2 in (1,435 mm)
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 generator
Traction motors DC traction motors
Cylinders Straight-6
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 750 hp (559 kW)
Career
Locale North America

The Baldwin DS-4-4-750 was a four-axle 750 horsepower (560 kW) diesel-electric switcher built by the Baldwin Locomotive Works at it Eddystone, Pennsylvania factory between 1949 and 1951. It was a bridge between the 660 horsepower (490 kW) DS-4-4-660 and the S-8. It was the low power companion in Baldwin's catalog to their DS-4-4-1000 and the S-12.

Original owners

RailroadQuantityRoad NumbersNotes
Baldwin Locomotive Works (plant)
1
301
to Weyerhaeuser Timber Company 301 in 1956; became Texas South-Eastern 301, now R.J. Corman (Texas Line) 301
Baldwin Locomotive Works (demonstrators)
2
750–751
to Weyerhaeuser Timber Company 101–102
American Cyanamid Company
1
14
American Steel and Wire Company
1
20
Atchison, Topeka and Santa Fe Railway
9
525–533
California Western Railroad
2
51–52
Erie Railroad
4
386–389
Pennsylvania Railroad
24
5595–5618
Texas Mexican Railway
2
509–510
Warner Sand and Gravel
1
14
This locomotive is now on the Allentown and Auburn Railroad in Topton PA undergoing restoration
Youngstown Sheet and Tube
6
608–610, 700–702
Total53

Page 40 of the Dolzall brothers book "Diesels from Eddystone" describes the DR-4-4-750 as a "Horsepower boost for a lagging seller." Baldwin dropped the DR-4-4-660 model and introduced the new 750 HP DR-4-4-750. The Atchison, Topeka & Santa Fe (AT&SF) purchased nine in August 1948 and 21 units were sold in 1949 to six different customers.

References

  • Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Pasadena, California: Interurban Press. ISBN 0-916374-93-9.
  • Dolzall, Gary W. and Stephen F. (1984). Diesels From Eddystone: Baldwin Diesel Locomotives. Milwaukee,Wisconsin: Kalmbach Books. ISBN 0-89024-052-3.
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