ALCO S-5
| Type and origin |
| Power type |
Diesel-electric |
| Builder |
ALCO |
| Serial number |
80915–80921 |
| Model |
S-5 (Specification DL421 and DL421A) |
| Build date |
June 1954 |
| Total produced |
7 |
|
|
|
| Performance figures |
| Power output |
800 hp (600 kW) |
|
The 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.
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
External links
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