Baldwin DS-4-4-750 Diesel-Electric Locomotive
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.
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.
Baldwin Locomotive Works (plant)
Road Number: 301
Notes: to Weyerhaeuser Timber Company 301 in 1956; became Texas South-Eastern 301, now R.J. Corman (Texas Line) 301.
Baldwin Locomotive Works (demonstrators)
Road Numbers: 750–751
Notes: to Weyerhaeuser Timber Company 101–102.
American Cyanamid Company
Road Number: 14
American Steel and Wire Company
Road Number: 20
Atchison, Topeka and Santa Fe Railway
Road Numbers: 525–533
California Western Railroad
Road Numbers: 51–52
Road Numbers: 386–389
Road Numbers: 5595–5618
Texas Mexican Railway
Road Numbers: 509–510
Road Number: 14
Youngstown Sheet and Tube
Road Numbers: 608–610, 700–702
Total Units: 53
Baldwin DS-4-4-750 Overview
Type and origin
Power type: Diesel-electric
Builder: Baldwin Locomotive Works
Build date: July 1949 to February 1951
Total produced: 53
• 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
Displacement: 11,874 cu in (194.58 L) total
Generator: DC generator
Traction motors: DC traction motors
Cylinder size: 12 3⁄4 in × 15 1⁄2 in (324 mm × 394 mm)
Locomotive brake: Air
Train brakes: Air
Power output: 750 hp (559 kW)
Locale: North America
ATSF No. 631, a Baldwin DS-4-4-750, switching Train 1, the San Francisco Chief at Amarillo, Texas. Photo by Roger Puta.
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Text: wikipedia.org. Images: Public Domain; http://www.commons.wikimedia.org (unless otherwise specified) and 17 U.S. Code § 107 fair use. References: Lewis, Robert G. The Handbook of American Railroads. New York: Simmons-Boardman Publishing Corporation, 1951, 2nd Edition 1956. Site Map Contact webmaster HERE.