ALCO S-5
Appearance
ALCO S-5 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() B&M S-5 #864 in Boston in September 1965 | |||||||||||||||
| |||||||||||||||
| |||||||||||||||
| |||||||||||||||
|
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
[edit]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
[edit]External links
[edit] Media related to ALCO S-5 locomotives at Wikimedia Commons
- Sarberenyi, Robert. Alco S5, S6, and SSB9 Original Owners.