ALCO RS-27

Specifications
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Trucks	AAR type B
Wheel diameter	40 in (1,016 mm)
Minimum curve	21°
Wheelbase	40 ft 4 in (12.29 m)
Length	57 ft 2+1⁄2 in (17.44 m)
Width	9 ft 11+1⁄8 in (3.03 m)
Height	14 ft 6 in (4.42 m)
Loco weight	256,800 lb (116,500 kg)
Fuel capacity	2,000 US gal (7,600 L)
Prime mover	ALCO 251
RPM range	1000
Engine type	Four-stroke diesel
Aspiration	Turbocharged
Displacement	10,688 cu in (175.14 L)
Generator	GE 5GT-581-B1
Traction motors	(4) GE 5GE-752-E3
Cylinders	V16
Cylinder size	9 in × 10.5 in (229 mm × 267 mm)

Type and origin
Type and origin
Power type	Diesel-electric
Builder	ALCO
Model	RS-27
Build date	December 1959 – October 1962
Total produced	27

ALCO RS-27
ALCO RS-27
	Minnesota Commercial Railway 318 at Minneapolis, July 2009
Power type
Type and origin
Power type	Diesel-electric
Builder	ALCO
Model	RS-27
Build date	December 1959 – October 1962
Total produced	27
Configuration:;
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Trucks	AAR type B
Wheel diameter	40 in (1,016 mm)
Minimum curve	21°
Wheelbase	40 ft 4 in (12.29 m)
Length	57 ft 2+1⁄2 in (17.44 m)
Width	9 ft 11+1⁄8 in (3.03 m)
Height	14 ft 6 in (4.42 m)
Loco weight	256,800 lb (116,500 kg)
Fuel capacity	2,000 US gal (7,600 L)
Prime mover	ALCO 251
RPM range	1000
Engine type	Four-stroke diesel
Aspiration	Turbocharged
Displacement	10,688 cu in (175.14 L)
Generator	GE 5GT-581-B1
Traction motors	(4) GE 5GE-752-E3
Cylinders	V16
Cylinder size	9 in × 10.5 in (229 mm × 267 mm)
Power output
Performance figures
Power output	2,400 hp (1.8 MW)
Tractive effort	64,200 lb (29,100 kg)
Locale
Career
Locale	U.S.A.

The ALCO RS-27 (specification DL-640) was a diesel-electric locomotive built by ALCO between December 1959 and October 1962.

Only 27 examples were manufactured. With ALCO's introduction of the Century Series line in 1963, the C-424 (specification DL-640A) replaced the RS-27 in the builder's catalog. Today, the Minnesota Commercial Railway has the only two RS-27s left in existence; however both have been placed into storage.