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Locomotive-Specs
GMD F7A – photo 1© trainspo.com
Diesel locomotive

GMD F7A

Built by EMD, GMD

Power output
1,100 kW
1,475 hp
Weight
112 t
246,917 lb
Length
15.44 m
50 ft 8 in
Track gauge
1,435 mm
Standard gauge
Years built
1949–1953
2,366 units
Axle arrangement
Bo'Bo'

Overview of the GMD F7A

Discover the iconic EMD F7A diesel locomotive, a true workhorse of American railroads.

Built by Electro-Motive Division between 1949 and 1953, this versatile locomotive boasts a powerful EMD 16-567B prime mover delivering 1100 kW of power.

Measuring 15.44 meters in length, its robust Bo'Bo' wheel arrangement and 1435 mm gauge allowed it to serve numerous railways across the United States, including the Atchison, Topeka and Santa Fe Railway, Burlington Northern, and Union Pacific Railroad.

The F7A is renowned for its distinctive bulldog nose and was a staple in both freight and passenger service, leaving a lasting legacy in railway history.

GMD F7A technical specifications

Value
SeriesEMD F7
Built byEMD, GMD · 1949–19532,366 units
Power output1,100 kW1,475 hp
Prime moverEMD 16-567B
Track gauge1,435 mmStandard gauge4 ft 8½ in
UIC axle arrangementBo'Bo'
Length15.44 m50 ft 8 in
Width3.23 m10 ft 7 in
Height4.57 m15 ft 0 in
Weight112 t246,917 lb

Operators of the GMD F7A

Railway companies that have operated the F7A, with the class designation used by each of them.

OperatorClassCountry
Atchison, Topeka and Santa Fe RailwayATSF F7AUnited States
Burlington NorthernBN F7AUnited States
Canon City & Royal Gorge RailroadCRRX F7AUnited States
Chicago and North Western Transportation CompanyCNW F7AUnited States
Clinchfield RailroadCRR F7AUnited States
Durbin and Greenbrier Valley RailroadDGVR F7AUnited States
Fillmore & Western Railway Co.F&W F7AUnited States
Fillmore and Western RailwayFWRY F7AUnited States
Kansas City Southern RailwayKCS F7AUnited States
Potomac Eagle Scenic RailroadPESR F7AUnited States
San Luis and Rio Grande RailroadSLRG F7AUnited States
Seminole Gulf RailwaySGLR PC-7United States
Union Pacific RailroadUP F7AUnited States
Wabash RailroadWAB F7AUnited States
Western Pacific RailroadWP F7AUnited States

GMD F7A photos

Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.

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