ALCO RS-11

Specifications
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	AAR type B
Wheel diameter	40 in (1,016 mm)
Minimum curve	21° (274.37 ft or 83.63 m)
Wheelbase	39 ft 4 in (11.99 m)
Length	56 ft 6 in (17.22 m)
Width	10 ft 1+5⁄8 in (3.089 m)
Height	14 ft 5+1⁄8 in (4.397 m)
Loco weight	257,300 lb (116,700 kg)
Fuel capacity	2,000 US gal (7,600 L; 1,700 imp gal)
Prime mover	ALCO 12-251B
RPM range	1,000 rpm max.
Engine type	V12 Four stroke diesel
Aspiration	Turbocharger
Generator	GE GT 581
Traction motors	(4) GE 752
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, MLW
Model	RS-11
Build date	February 1956 to June 1961 (Alco) ; November 1957 to April 1964 (MLW)
Total produced	433

ALCO RS-11
ALCO RS-11
	TPW 400, an RS-11 on display at Illinois Railway Museum, July 16, 2005.
Power type
Type and origin
Power type	Diesel-electric
Builder	ALCO, MLW
Model	RS-11
Build date	February 1956 to June 1961 (Alco) ; November 1957 to April 1964 (MLW)
Total produced	433
Configuration:;
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	AAR type B
Wheel diameter	40 in (1,016 mm)
Minimum curve	21° (274.37 ft or 83.63 m)
Wheelbase	39 ft 4 in (11.99 m)
Length	56 ft 6 in (17.22 m)
Width	10 ft 1+5⁄8 in (3.089 m)
Height	14 ft 5+1⁄8 in (4.397 m)
Loco weight	257,300 lb (116,700 kg)
Fuel capacity	2,000 US gal (7,600 L; 1,700 imp gal)
Prime mover	ALCO 12-251B
RPM range	1,000 rpm max.
Engine type	V12 Four stroke diesel
Aspiration	Turbocharger
Generator	GE GT 581
Traction motors	(4) GE 752
Cylinders	12
Cylinder size	9 in × 10.5 in (229 mm × 267 mm)
Maximum speed
Performance figures
Maximum speed	70–85 mph (113–137 km/h)
Power output	1,800 hp (1,300 kW)
Tractive effort	64,325 lb (29,177 kg)
Locale
Career
Locale	North America South America

The ALCO RS-11 is a class of diesel-electric locomotive rated at 1,800 hp (1.34 MW), that rode on two-axle trucks, having a B-B wheel arrangement. This model was built by both Alco (327 units) and Montreal Locomotive Works (99 units). Total production was 433 units.