Baldwin S-12

Specifications
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	AAR type A
Wheel diameter	40 in (1,016 mm)
Minimum curve	44° (133.47 ft or 40.68 m radius)
Wheelbase	30 ft 8 in (9.35 m)
Length	48’
Width	10’
Height	14’
Loco weight	240,000 lb (108,862 kg)
Prime mover	606A
RPM range	625 rpm max
Engine type	Four-stroke diesel
Aspiration	Turbocharger Elliott Company H503 (215 hp)
Displacement	1,979 cu in (32.43 L) per cylinder; 11,874 cu in (194.58 L) total
Generator	Westinghouse YG40D
Traction motors	Westinghouse 362D (4)
Cylinders	6
Cylinder size	12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)

Type and origin
Type and origin
Power type	Diesel-electric
Builder	Baldwin Locomotive Works
Model	S12
Build date	January 1951–October 1956
Total produced	451

Baldwin S12
Baldwin S12
	A preserved S-12 at the Railroad Museum of Pennsylvania.
Power type
Type and origin
Power type	Diesel-electric
Builder	Baldwin Locomotive Works
Model	S12
Build date	January 1951–October 1956
Total produced	451
Configuration:;
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	AAR type A
Wheel diameter	40 in (1,016 mm)
Minimum curve	44° (133.47 ft or 40.68 m radius)
Wheelbase	30 ft 8 in (9.35 m)
Length	48’
Width	10’
Height	14’
Loco weight	240,000 lb (108,862 kg)
Prime mover	606A
RPM range	625 rpm max
Engine type	Four-stroke diesel
Aspiration	Turbocharger Elliott Company H503 (215 hp)
Displacement	1,979 cu in (32.43 L) per cylinder; 11,874 cu in (194.58 L) total
Generator	Westinghouse YG40D
Traction motors	Westinghouse 362D (4)
Cylinders	6
Cylinder size	12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)
Maximum speed
Performance figures
Maximum speed	60 mph (97 km/h)
Power output	1,200 hp (895 kW)
Tractive effort	Starting: 72,000 lbf (33,000 kgf) @30% ; Continuous: 34,000 lbf (15,000 kgf) @10.8 mph (17.4 km/h)
Disposition
Career
Disposition	6 preserved, remainder scrapped

Balwin DS-4-4-660 / DS-4-4-1000

Type and origin
Power type	Diesel-electric
Model	DS-4-4-660 / DS-4-4-1000
Build date	660: June 1946 to May 1949 1000: January 1951 – November 1951
Total produced	660: 139 1000: 446

Specifications
Configuration:
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Trucks	AAR Type A truck
Wheel diameter	36 in (914 mm)
Minimum curve	44° (133.47 ft (40.68 m) radius)
Wheelbase	30 ft 8 in (9.35 m)
Length	46 ft 6+1⁄4 in (14.18 m)
Width	9 ft 11+1⁄4 in (3.03 m)
Height	14 ft (4.27 m)
Loco weight	660: 196,600 lb (89,200 kg) 1000: 230,000 lb (100,000 kg)
Prime mover	660: Baldwin 606NA 1000: 608NA later 606SC
RPM range	625 rpm max.
Engine type	606: Straight-6 608: Straight-8 Four-stroke diesel
Aspiration	606NA and 608NA: Natural 606SC: Turbocharged
Displacement	1,979 cu in (32.43 L) per cylinder 606: 11,874 cu in (194.58 L) total 608: 15,832 cu in (259.44 L) total
Generator	West’hse 480 DC
Traction motors	(4) West’hse 362-D
Cylinders	6
Cylinder size	12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)
Loco brake	Air
Train brakes	Air

Performance figures
Power output	660: 660 hp (492 kW) 1000: 1,000 hp (746 kW)
Tractive effort	660: 56,500 lb (25,600 kg) 1000: 57,500 lb (26,100 kg)

Career
Locale	North America

The Baldwin S-12 or BLH S12 is a 1,200-horsepower (890 kW) diesel-electric switcher locomotive. Utilizing a turbocharged 6-cylinder version of the powerful 606A diesel prime mover, S12s were known for their "lugging" power, despite being temperamental. Like most BLH switchers, the S12 had AAR Type-A switcher trucks in a B-B wheel arrangement. 451 units were built between 1951 and 1956, when BLH left the locomotive market.