ALCO RSD-4

Specifications
Specifications
Configuration:;
• AAR	C-C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	ALCO trimount
Wheel diameter	40 in (1,000 mm)
Minimum curve	21° (274.37 ft or 83.63 m)
Wheelbase	42 ft 3 in (12.88 m)
Length	56 ft 6 in (17.22 m)
Width	10 ft 1+7⁄8 in (3.096 m)
Height	14 ft 5+1⁄4 in (4.401 m)
Loco weight	278,860 lb (126,490 kg)
Fuel capacity	800 US gal (3,000 L)
Prime mover	ALCO 244
RPM range	1000 (max)
Engine type	V12 Four-stroke engine diesel
Aspiration	Turbocharger
Displacement	8,016 cu in (131.36 L)
Generator	GE 5GT-581A1
Traction motors	(6) GE 5GE752-C1
Cylinders	12
Cylinder size	9 in × 10.5 in (229 mm × 267 mm)

Type and origin
Type and origin
Power type	Diesel-electric
Builder	ALCO
Model	RSD-4 (Specification E1663)
Build date	1951–1952
Total produced	36

ALCO RSD-4
ALCO RSD-4
	Kennecott Copper Corporation locomotive 201 on display at Snoqualmie Depot, Snoqualmie, Washington
Power type
Type and origin
Power type	Diesel-electric
Builder	ALCO
Model	RSD-4 (Specification E1663)
Build date	1951–1952
Total produced	36
Configuration:;
Specifications
Configuration:;
• AAR	C-C
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	ALCO trimount
Wheel diameter	40 in (1,000 mm)
Minimum curve	21° (274.37 ft or 83.63 m)
Wheelbase	42 ft 3 in (12.88 m)
Length	56 ft 6 in (17.22 m)
Width	10 ft 1+7⁄8 in (3.096 m)
Height	14 ft 5+1⁄4 in (4.401 m)
Loco weight	278,860 lb (126,490 kg)
Fuel capacity	800 US gal (3,000 L)
Prime mover	ALCO 244
RPM range	1000 (max)
Engine type	V12 Four-stroke engine diesel
Aspiration	Turbocharger
Displacement	8,016 cu in (131.36 L)
Generator	GE 5GT-581A1
Traction motors	(6) GE 5GE752-C1
Cylinders	12
Cylinder size	9 in × 10.5 in (229 mm × 267 mm)
Power output
Performance figures
Power output	1,600 hp (1.2 MW)
Tractive effort	69,700 lb (31,600 kg)

The ALCO RSD-4 was a 1,600 horsepower (1.2 MW) six axle diesel-electric locomotive built by the American Locomotive Company between 1951 and 1952.^[1] It was a derivative of the four-axle ALCO RS-3, with two additional powered axles which allowed better tractive effort at lower speeds. Due to the inadequate capacity of the main generator, this model was later superseded in production by the ALCO RSD-5.

Original owners

Railroad	Quantity	Road numbers	Notes
Atchison, Topeka and Santa Fe Railway	10	2100–2109	^[1]
Chicago and North Western Railway	5	1515–1517, 1619–1620	^[1]
Central Railroad of New Jersey	14	1601–1614	^[1]
Kennecott Copper Corporation	1	201	Preserved^[1]
Utah Railway	6	300–305	^[1]
Total	36

Preserved units

The only ALCO RSD-4 that has survived is Kennecott Copper Corporation #201. It resided at the Northwest Railway Museum until November 2021 (formerly known as the Puget Sound & Snoqualmie Valley Railway) in Snoqualmie, Washington in its orange Kennecott paint scheme.^[2] As of 2021, it has been returned to Ely, Nevada (along with EMD SD7 #401) to the Nevada Northern Railway Museum.^[3]

References

^ ^a ^b ^c ^d ^e ^f Marre, Louis A. (1995). Diesel locomotives : the first 50 years : a guide to diesels built before 1972. Waukesha, WI: Kalmbach Pub. Co. p. 247. ISBN 0-89024-258-5. OCLC 34531120.
^ "Northwest Railway Museum moves two 330,000-pound locomotives". 3 November 2021.
^ "Bring 401 and 201 Home".

Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 141. ISBN 0-87564-715-4.
Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. p. 247. ISBN 978-0-89024-026-7.

This diesel locomotive-related article is a stub. You can help Wikipedia by expanding it.

[:0-1] ^ ^a ^b ^c ^d ^e ^f Marre, Louis A. (1995). Diesel locomotives : the first 50 years : a guide to diesels built before 1972. Waukesha, WI: Kalmbach Pub. Co. p. 247. ISBN 0-89024-258-5. OCLC 34531120.

[2] "Northwest Railway Museum moves two 330,000-pound locomotives". 3 November 2021.

[3] "Bring 401 and 201 Home".

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