Baldwin RS-12

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**Baldwin RS-12**
Power type	Diesel-electric
Baldwin model RS-12 diesel-electric locomotive as delivered to the Seaboard Air Line Railroad.
Service class	Locomotive
Type of service	Road switcher
Builder	Baldwin Lima Hamilton Corp.
Model	RS-12
Build date	1950 – 1956
Total production	50
AAR wheel arr.	B-B
UIC classification	B'B'
Gauge	4 ft 8½ in (1,435 mm)
Length	58 ft 6 in (17,830.8 mm)
Width	10 ft (3,048 mm)
Height	14 ft (4267.2 mm)
Total weight	116 tons (232,000 lbs)
Fuel capacity	900 Gal. (3405.9 L)
Prime mover	Baldwin 606A
Engine type	4-stroke Diesel engine
Aspiration	Turbocharged
Displacement	11874 in³ (194.58 L)
Cylinders	Inline 6
Cylinder size	12¾ in x 15½ in (323.85 mm x 393.7 mm)
Transmission	DC generator, DC traction motors
Top speed	65 mph (18:74 gear ratio), 75 mph (18:65 gear ratio)
Power output	1,200 hp (895 kW)
Locomotive brakes	Straight air
Train brakes	6-SL, or 24-RL
WikiProject Trains {{Infobox Locomotive Auto}}

The Baldwin RS-12 railroad locomotive was a 1,200 hp (895 kW) diesel-electric road-switcher configured with an AAR type B-B wheel arrangement. It was the follow-on model to the 1,000 hp DRS-4-4-1000, first introduced in 1948. It was more successful than its predecessor selling 50 units to eight railroads, versus 22 units to three railroads. Only one railroad, The Pennsylvania Railroad bought both models.

When Baldwin Locomotive Works merged with Lima-Hamilton the combination Baldwin-Lima-Hamilton decided to concentrate locomotive production at Baldwin's Eddystone, Pennsylvania plant. There was still one outstanding order for Lima LRS-1200s, but the customer, New York Central Railroad agreed to receive RS-12s instead.

The locomotive could be ordered with either a steam generator for steam heat, or dynamic brakes contained within the short hood. Of the 50 units built, only 2 were ordered with dynamic brakes (McCloud River Railroad No. 32 and 33)

[edit] Original owners

Railroad	Quantity	Road Numbers
Central Railroad of New Jersey	4	1206–1209
Chicago, Milwaukee, St. Paul and Pacific Railroad	2	970, 971 (renumbered 926, 927)
Durham and Southern Railway	3	1200–1202
Kaiser Bauxite Company	4	101–104
McCloud River Railroad	2	32, 33 (to California Western 55, 56)
New York Central Railroad	17	5820–5836 (renumbered 6220–6236)
Pennsylvania Railroad	8	8105–8110, 8776, 8975
Seaboard Air Line Railroad	10	1466–1475 (to Seaboard Coast Line Railroad 207–216)

[edit] Sources

Kirkland, John F. (November 1985). The Diesel Builders Volume 1: Fairbanks-Morse and Lima-Hamilton. Interurban Press. ISBN 0916374696.
Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Interurban Press. ISBN 0916374939.
(June 1951) Diesel Engine Manual DE-111 for 600 series engines, Manual DE-111. Baldwin Lima Hamilton Corp..
(March 1956) Operator's Manual for Standard 1200-HP Diesel Electric Switching Locomotives, Manual S-120. Baldwin Lima Hamilton Corp..

v • d • e Diesel locomotives built by the Baldwin Locomotive Works

Switchers	VO-660 • DS-4-4-660 • DS-4-4-750 • S-8 • VO-1000 • DS-4-4-1000 • S-12

Road switchers	DRS-4-4-10 • 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