Santa Fe CF7

Specifications
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Length	48 ft 6 in (14.78 m)
Loco weight	249,000 pounds (113 t)
Prime mover	EMD 16-567BC
Engine type	2-stroke diesel
Aspiration	Roots blower
Displacement	9,072 cu in (148.7 liters)
Cylinders	V16
Cylinder size	8.5 in × 10 in (216 mm × 254 mm)
Transmission	DC generator,; DC traction motors
Loco brake	Straight air
Train brakes	26 L air on later units, 24RL on earlier units

Type and origin
Type and origin
Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD);; rebuilt by Atchison, Topeka & Santa Fe Railway, Cleburne, Texas shops
Model	CF7
Rebuild date	February 1969/1970 – 1978
Number rebuilt	233

Santa Fe CF7
Santa Fe CF7
	Locomotive #517, a CF7, is the main power on the Commonwealth Railway in Suffolk, Virginia.
Power type
Type and origin
Power type	Diesel-electric
Builder	General Motors Electro-Motive Division (EMD);; rebuilt by Atchison, Topeka & Santa Fe Railway, Cleburne, Texas shops
Model	CF7
Rebuild date	February 1969/1970 – 1978
Number rebuilt	233
Configuration:;
Specifications
Configuration:;
• AAR	B-B
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Length	48 ft 6 in (14.78 m)
Loco weight	249,000 pounds (113 t)
Prime mover	EMD 16-567BC
Engine type	2-stroke diesel
Aspiration	Roots blower
Displacement	9,072 cu in (148.7 liters)
Cylinders	V16
Cylinder size	8.5 in × 10 in (216 mm × 254 mm)
Transmission	DC generator,; DC traction motors
Loco brake	Straight air
Train brakes	26 L air on later units, 24RL on earlier units
Maximum speed
Performance figures
Maximum speed	65 mph (105 km/h)
Power output	1,750 hp (1,300 kW)
Tractive effort	62,250 lbf (276.9 kN)
Locale
Career
Locale	North America

The Santa Fe CF7 is an EMD F-unit railroad locomotive that has had its streamlined carbody removed and replaced with a custom-made, "general purpose" body in order to adapt the unit for switching duty. All of the conversions were performed by the Atchison, Topeka & Santa Fe Railway's Cleburne, Texas, workshops between February 1970 and 1978. This was Santa Fe's most notable remanufacturing project, with 233 completed between 1970 - March 1978. The program was initiated in response to a system-wide need for more than 200 additional four-axle diesel road switchers to meet projected motive power demands on branch lines and secondary main lines.

Santa Fe's aging fleet of F7 units were approaching retirement age in 1970. These units were remanufactured into switchers and named CF7. Santa Fe used them for a decade and sold many of them to short lines around the states. Many of those were still being used as of 2003.

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