ALCO RSD-12
| Industry | Locomotive manufacturing |
|---|
The ALCO RSD-12 is a C-C configuration diesel-electric locomotive delivering . A total of 171 units were manufactured, providing superior tractive effort at reduced speeds compared to the four-axle model, the ALCO RS-11.
Original buyers
| Railroad | Quantity | Road numbers | Notes |
|---|---|---|---|
| Chesapeake and Ohio Railway | 10 | 6700–6709 | Renumbered to 2007–2016; units 2014 and 2016 were sold to Baltimore and Ohio Railroad, subsequently acquired by Utah Railway in 1976. |
| Lake Superior and Ishpeming Railroad | 4 | 1801–1804 | |
| New York, Chicago and St. Louis Railroad (“Nickel Plate Road”) | 9 | 325–333 | Transferred in 1964 to Norfolk and Western Railway, renumbered 2325-2333. |
| Pennsylvania Railroad | 25 | 8655–8679 | Subsequently passed to Penn Central, then Conrail, with rebuilds into Alco mt6. Later operated by Norfolk Southern Railway and CSX Transportation. Fully retired by 2020. |
| Southern Pacific Company | 21 | 7000–7020 | These units were rebuilt from ALCO RSD-5 locomotives, featuring upgraded motors and carbodies while retaining original generators and trucks. |
| Ferrocarril del Pacífico | 19 | 1502–1508, 509–520 | |
| Ferrocarriles Nacionales de México | 73 | 7400–7472 | |
| Companhia Siderúrgica Nacional (Brazil) | 10 | 3501–3510 | Manufactured by MLW for Brazilian track gauge; later operated by RFFSA as ALCo RSD-12. |
| Total | 171 |
Preservation
• The Nickel Plate Road #329 is conserved at a museum located in Bellevue, Ohio.
• Southern Pacific units #2954 and #2958, originally rebuilt from RSD-5 models, are maintained at the Southern California Railroad Museum in Perris, California.
• Paperton Junction Southern (formerly SP #2962) is preserved within the collection of the Arkansas Railroad Museum in Pine Bluff, Arkansas.
• The Lake Superior & Ishpeming unit #1804 remains partially intact at a shipyard in Escanaba, Michigan, although it lacks its prime mover.