Baldwin RS-4-TC

A preserved RS-4-TC at the Northwest Railway Museum

Type and origin
Power type	Diesel-electric
Builder	Baldwin Locomotive Works
Model	RS-4-TC
Build date	July 1953 – January 1955
Total produced	74

Specifications
AAR wheel arr.	B-B
Gauge	4 ft 8 ¹⁄₂ in (1,435 mm)
Length	38 ft 11 in (11.86 m)
Height	12 ft 6.5 in (3.82 m)
Loco weight	60 short tons (54 long tons; 54 t)
Prime mover	Caterpillar D397
Engine type	Four-stroke diesel
Aspiration	Supercharged
Generator	DC generator
Traction motors	DC traction motors
Cylinders	V-12
Cylinder size	5 ³⁄₄ in × 8 in (146.1 mm × 203.2 mm)
Transmission	Electric
Loco brake	Straight air
Train brakes	Air

Performance figures
Power output	400 hp (300 kW)

Career
Locale	North America

The Baldwin RS-4-TC is a diesel-electric locomotive (switcher) built by Baldwin Locomotive Works between July 1953 and January 1955. The RS-4-TCs were powered by a supercharged twelve-cylinder diesel engine rated at 400 horsepower (298 kW), and rode on a pair of two-axle trucks in a B-B wheel arrangement. 74 of these models were built mainly for the Army while a few of them went to the Air Force.

History

The RS-4-TCs were originally built with Caterpillar D397 diesel engines. The Caterpillar D397s were chosen for their high speed and small bore and stroke for quick startup and shutdowns. There are two number systems for the RS-4-TCs, the 1200 series or the 4000 series. The locomotives in both series were the same, except the 1200s were built for domestic service and had fixed axle, standard gauge trucks while the 4000s were built for foreign service and had adjustable-gauge trucks for use on foreign narrow and wide gauge tracks. Even though the 4000s were built for foreign service, very few were actually deployed overseas, the vast majority served in the United States.

At the end of the Korean War, most RS-4-TCs were placed into storage while their World War II counterparts were sold as surplus. Today, the majority of RS-4-TCs have been sold as surplus and are currently serving tourist and shortline railroads with a few still in military service.

Name Designation

RS - Road Switching Service
4 - 4th military type
TC - Transportation Corps (as in Army Transportation Corps)

Original buyers

Railroad	Quantity	Road Numbers
U.S. Army	66	1247-1273, 4001-4039
U.S. Air Force	8	1274-1276, 4040-4044
Totals	74

Gallery

1954 Baldwin 0-4-4-0 Diesel-Electric Switcher model RS-4-TC 1A at the Texas Transportation Museum
Blacklands Railroad RS-4-TC #4014 in Sulphur Springs, Texas

References

"The Baldwin Diesel Zone - RS-4-TC". Retrieved 24 February 2009.
"Utah Rails - RS-4-TC". Retrieved 25 February 2009.

External links

Wikimedia Commons has media related to Baldwin RS-4-TC locomotives.

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)

Diesel-electric switcher locomotives

Alco	ALCO Boxcab ALCO 600 HH600 HH660 HH900 HH1000 S-1 S-2 S-3 S-4 S-5 S-6 T-6 SB-8/SSB-9

Baldwin	VO-660 DS-4-4-660 DS-4-4-750 S-8 RS-4-TC VO-1000 DS-4-4-1000 S-12

Fairbanks-Morse	H-10-44 H-12-44 H-12-44TS H-12-46

GE	60-ton boxcab 100-ton boxcab 600-hp centercab 1000-hp centercab DEY-2 EN-6 25-ton 35-ton 43-ton 44-ton 45-ton 50-ton 60-ton 65-ton 70-ton 80-ton 95-ton 100-ton 110-ton 125-ton 126-ton 128-ton 1800-hp transfer 2000-hp transfer U5B U6B

GM/EMD	SC, SW, NC, NC1, NC2, NW, NW1, NW1A, NW4, T NW2 NW3 NW5 TR1 SW1 SW7 SW8 SW9 SW600 SW900 SW1000 SW1001 SW1200 SW1500 SW1504 MP15DC MP15AC MP15T RS1325 GMD1

Lima-Hamilton	LS-750 LS-800 LS-1000 LS-1200

National Railway Equipment	1GS7B 2GS14B 3GS21B 3GS21C

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