EMD F3
BN #9762, ex-NP #6502, leading the North Coast Hiawatha into Yakima, Washington in August 1971.
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| Type and origin | |
|---|---|
| Power type | Diesel-electric |
| Builder | General Motors Electro-Motive Division (EMD) |
| Model | F3 |
| Build date | July 1945 – February 1949 |
| Total produced | 1,111 A units, 696 B units |
| Specifications | |
|---|---|
| AAR wheel arr. | B-B |
| 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 | 50 ft 8 in (15.44 m) |
| Width | 10 ft 8 in (3.25 m) |
| Height | 15 ft (4.57 m) |
| Loco weight | 234,000 lb (106,000 kg) |
| Fuel capacity | 1,200 US gal (4,500 L; 1,000 imp gal) |
| Prime mover | EMD 567B |
| RPM range | 275-800 |
| Engine type | Two-stroke V16 diesel |
| Aspiration | Roots-type supercharger |
| Displacement | 9,072 cu in (148.66 L) |
| Generator | EMD D-12 |
| Traction motors | (4) EMD D-17-B or D-27-B |
| Cylinders | 16 |
| Cylinder size | 8 1⁄2 in × 10 in (216 mm × 254 mm) |
| Performance figures | |
|---|---|
| Maximum speed | 103 mph (166 km/h) |
| Power output | 1,500 hp (1.1 MW) |
| Tractive effort | 58,500 lb (26,500 kg) |
The EMD F3 was a 1,500-horsepower (1,100 kW) B-B freight- and passenger-hauling diesel locomotive produced between July 1945 and February 1949 by General Motors’ Electro-Motive Division. Final assembly was at GM-EMD's La Grange, Illinois plant. A total of 1,111 cab-equipped lead A units and 696 cabless booster B units were built.
The F3 was the third model in GM-EMD's highly successful F-unit series of cab unit diesel locomotives, and it was the second most produced of the series. The F3 essentially differed from the EMD F2 in that it used the “new” D12 generator to produce more power, and from the later EMD F7 in electrical equipment. Some late-model F3's had the same D27 traction motors, along with the heavier-duty electrical cables, used in the F7, and were referred to as model F5 by EMD's Engineering Department.
The F3 used a 16-cylinder 567B series diesel engine developing 1,500 hp (1.1 MW) at 800 rpm. The 567 was designed specifically for railroad locomotives, a supercharged 2 stroke 45 degree V type with 567 cu in (9.29 L) displacement per cylinder, for a total of 9,072 cu in (148.66 L). A D.C. generator powered four traction motors, two on each Blomberg B truck. EMD has built all of its major components since 1939.
As built, the only way to distinguish between the F2 and F3 was the nose number panels on the A units, which were small on the F2 and large on the F3 and subsequent locomotives. However, these could and were often altered by the railroad. Few F2's were built, however.
Early versions of the F3 had the "chicken wire" grilles along the top edge of the carbody. Later production featured a distinctive fabricated stainless steel grille.
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Wikipedia