EMD FP7

EMD FP7
Western Pacific 805-A, an EMD FP7, pulls the California Zephyr in March 1970
Type and origin
Power typeDiesel-electric
BuilderGeneral Motors Electro-Motive Division (EMD)
General Motors Diesel (GMD, Canada)
ModelFP7
Build dateJune 1949 – December 1953
Total produced381
Specifications
Configuration:
 • AARB-B
 • UICBo'Bo'
Gauge4 ft 8+12 in (1,435 mm)
TrucksBlomberg B
Wheel diameter40 in (1,016 mm)
Minimum curve23° (250.79 ft or 76.44 m radius)
Wheelbase43 ft (13.11 m)
Length55 ft 2+14 in (16.82 m)
Width10 ft 8 in (3.25 m)
Height15 ft (4.57 m)
Loco weight260,000 lb (120,000 kg)
Fuel capacity1,200 US gal (4,500 L; 1,000 imp gal)
Prime moverEMD 16-567B
RPM range800
Engine typeTwo-stroke V16 diesel
AspirationRoots-type supercharger
GeneratorEMD D-12
Traction motors(4) EMD D-27-B
Cylinders16
Cylinder size8+12 in × 10 in (216 mm × 254 mm)
Performance figures
Maximum speed100–119 mph (161–192 km/h)
Power output1,500 horsepower (1,100 kW)
Career
LocaleNorth America, Saudi Arabia

The EMD FP7 is a 1,500 horsepower (1,100 kW), B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors' Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD's La Grange, Illinois plant, excepting locomotives destined for Canada, in which case final assembly was at GMD's plant in London, Ontario. The FP7 was essentially EMD's F7A locomotive extended by four feet to give greater water capacity for the steam generator for heating passenger trains.