Baldwin DRS-4-4-1500

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Baldwin DRS-4-4-1500
Specifications
Power type	Diesel-electric
Builder	Baldwin Locomotive Works
Model	DRS-4-4-1500
Build date	1947–1950
Total produced	35
AAR wheel arr.	B-B
UIC classification	Bo′Bo′
Gauge	4 ft 8¹⁄₂ in (1,435 mm)
Length	57 ft 10 ³⁄₄ in (17.65 m)
Height	14 ft (4.27 m)
Locomotive weight	120 short tons (107 long tons; 109 t)
Prime mover	Baldwin 608SC
Engine type	Four-stroke diesel
Aspiration	Turbocharged
Displacement	15,832 cu in (259.44 L)
Generator	DC generator
Traction motors	DC traction motors
Cylinders	8
Cylinder size	12 ³⁄₄ in × 15 ¹⁄₂ in (324 mm × 394 mm)
Transmission	Electric
Top speed	65 mph (105 km/h)
Power output	1,500 hp (1,100 kW)
Tractive effort	61,510 lbf (273.61 kN)
Locomotive brake	Straight air
Train brakes	Air
Career

The Baldwin DRS-4-4-1500 was a United States diesel-electric locomotive of the road switcher type rated at 1,500-horsepower (1,100 kW), that rode on two-axle trucks, having a B-B wheel arrangement. It was manufactured from 1947 until it was replaced in 1950 by the 1,600-horsepower (1,200 kW) AS-16.

Nine railroads bought 35 locomotives, with five railroads later buying the successor model.

Railroad	Quantity	Road Numbers	Notes
Erie Railroad	6	1100–1105
Lehigh Valley Railroad	1	200
Iron Mines of Venezuela (Bethlehem Steel Company)	3	1–3
Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line")	8	360–367
Missouri Pacific Railroad (St. Louis, Brownsville and Mexico Railway)	4	4112–4115
New York Central Railroad	2	7300–7301
Northern Pacific Railway	2	175–176	Renumbered 500–501
Pennsylvania-Reading Seashore Lines	6	6000–6005
Western Maryland Railway	3	170–172
Total	35

References

Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Interurban Press. ISBN 0-916374-93-9.

v t e 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)

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