EMD F7

Type and origin
Type and origin
Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD); General Motors Diesel (GMD, Canada)
Model	F7
Build date	February 1949 – December 1953
Total produced	2,393 A units; 1,463 B units;

EMD F7
EMD F7
	Santa Fe Railway F7 #309 with the Grand Canyon Limited on August 19, 1967
Power type
Type and origin
Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD); General Motors Diesel (GMD, Canada)
Model	F7
Build date	February 1949 – December 1953
Total produced	2,393 A units; 1,463 B units;
Configuration:;
Specifications
Configuration:;
• AAR	B-B
• UIC	Bo’Bo’
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Trucks	Blomberg B
Wheel diameter	40 in (1,016 mm)
Minimum curve	23° (250.79 ft or 76.44 m radius)
Wheelbase	39 ft (11.89 m)
Length	A unit: 50 ft 8 in (15.44 m); B unit: 50 ft 0 in (15.24 m)
Width	10 ft 7 in (3.23 m)
Height	15 ft (4.57 m)
Loco weight	247,300 lb (112,200 kg)
Prime mover	EMD 16-567B
RPM range	800
Engine type	Two-stroke V16 diesel
Aspiration	Roots blower
Displacement	9,072 cu in (148.66 L)
Generator	EMD D-12
Traction motors	(4) EMD D-27-B
Cylinders	16
Cylinder size	8+1⁄2 in × 10 in (216 mm × 254 mm)
Maximum speed
Performance figures
Maximum speed	65–102 mph (105–164 km/h)
Power output	1,500 hp (1,100 kW)
Tractive effort	Starting: 56,500 lbf (251 kN) at 25% ; Continuous: 40,000 lbf (180 kN) at 9.3 mph (15 km/h)
Locale
Career
Locale	North America

The EMD F7 is a model of 1,500-horsepower (1,100 kW) diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD).

Although originally promoted by EMD as a freight-hauling unit, the F7 was also capable of passenger service, and used in hauling trains such as the Santa Fe Railway's high-speed flagship trains, the Super Chief, & El Capitan, and the Ontario Northland's Northlander.