EMD F9

EMD F9
D&RGW F9 #5771 in 2009. Note the carbody filter grille ahead of the front porthole, the only reliable distinguishing feature of an F9.
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division (EMD)
General Motors Diesel (GMD, Canada)
ModelF9
Build dateFebruary 1953 – May 1960
Total produced101 A units, 156 B units
Specifications
Configuration:
 • AARB-B
Gauge4 ft 8+12 in (1,435 mm) standard gauge
TrucksBlomberg B
Wheel diameter40 in (1,016 mm)
Minimum curve23° (250.79 ft or 76.44 m radius)
Wheelbase39 ft (11.89 m)
LengthA unit, 50 ft 8 in (15.44 m) B unit, 50 ft 0 in (15.24 m)
Width10 ft 8 in (3.25 m)
Height15 ft (4.57 m)
Prime moverEMD 16-567C
RPM range275-835
Engine typeV16 Two-stroke diesel
AspirationRoots blower
Displacement9,072 cu in (148.66 L; 32.70 imp gal)
Cylinders16
Cylinder size8+12 in × 10 in (216 mm × 254 mm)
Performance figures
Maximum speed65–105 mph (105–169 km/h)
Power output1,750 hp (1.30 MW)
Career
LocaleNorth America

The EMD F9 is a 1,750 horsepower (1,300 kW) Diesel-electric locomotive produced between February 1953 and May 1960 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD). It succeeded the F7 model in GM-EMD's F-unit sequence. Final assembly was at GM-EMD's La Grange, Illinois plant. The F9 was also built in Canada by General Motors Diesel at their London, Ontario plant. A total of 101 cab-equipped lead A units and 156 cabless booster B units were built. The F9 was the fifth model in GM-EMD's highly successful "F" series of cab unit diesel locomotives.

By the time cab units such as the F9 were built, railroads were turning to the road switcher-style of locomotive, as they had much better visibility from the cab without the need to lean out the window. The F9 was succeeded in most part by the EMD GP9.