railroad.wikisort.org - TrainThe Alco S-5 (DL 421A) was a diesel-electric locomotive of the switcher type rated at 800 horsepower (600 kW), that rode on two-axle trucks, having a B-B wheel arrangement.
ALCO S-5 |
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B&M S-5 #864 in Boston in September 1965 |
Type and origin |
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Power type | Diesel-electric |
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Builder | ALCO |
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Serial number | 80915–80921 |
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Model | S-5 (Specification DL421 and DL421A) |
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Build date | June 1954 |
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Total produced | 7 |
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Specifications |
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Configuration:
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• AAR | B-B |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) |
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Prime mover | ALCO 251 |
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Cylinders | Straight 6 |
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Performance figures |
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Power output | 800 hp (600 kW) |
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Career |
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Operators | Boston and Maine Railroad |
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Numbers | 860-865, 909 |
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Locale | United States |
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Disposition | 1 preserved, remainder scrapped |
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This was Alco's second attempt to build a replacement 251-engined switcher to replace the 539-engined S-3 and S-4. Only seven were sold. The demonstrator unit was ALCO specification DL421 and the six production units were ALCO specification DL421A. Alco fitted the 251A engine in its replacement, the S-6 with power output raised by 100 horsepower (75 kW).
Original Owners
Railroad | Quantity | Road numbers | Notes |
Alco (demonstrator) | 1 | 909 | to Island Creek Fuel and Transportation Company #102 |
Boston and Maine Railroad | 6 | 860–865 | |
See also
- List of ALCO diesel locomotives
- List of MLW diesel locomotives
External links
Media related to ALCO S-5 locomotives at Wikimedia Commons
Diesel-electric locomotives built by ALCO |
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Switchers | |
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RS, RSC and RSD series | |
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Cab units |
- Rebel power car
- DL-103b
- DL-105
- DL-107
- DL-108
- DL-109
- DL-110
- DL-202
- DL-203
- FA
- FB
- PA
- PB
|
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Century series | |
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Diesel-hydraulics | DH643 |
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Export locomotives | |
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Unproduced locomotives |
- C428
- C620
- C624
- C636F
- C636P
- C650DH
|
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List of ALCO diesel Locomotives |
Diesel–electric switcher locomotives |
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Alco | |
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Baldwin | |
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Fairbanks-Morse | |
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GE |
- 60-ton boxcab
- 100-ton boxcab
- 600-hp centercab
- 1000-hp centercab
- DEY-2
- EN-6
- 25-ton
- 35-ton
- 43-ton
- 44-ton
- 45-ton
- 50-ton
- 60-ton
- 65-ton
- 70-ton
- 80-ton
- 95-ton
- 100-ton
- 110-ton
- 125-ton
- 126-ton
- 128-ton
- 1800-hp transfer
- 2000-hp transfer
- U5B
- U6B
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GM/EMD | |
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Lima-Hamilton | |
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National Railway Equipment | |
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