| ALCO S-5 |
|---|
B&M S-5 #864 in Boston in September 1965 |
| Type and origin |
|---|
| Power type | Diesel-electric |
|---|
| Builder | ALCO |
|---|
| Serial number | 80915–80921 |
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| 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 switcher locomotive 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
Media related to ALCO S-5 locomotives at Wikimedia Commons