| Baldwin DRS-4-4-1000 | |
| Powertype: | Diesel-electric |
| Builder: | Baldwin Locomotive Works |
| Buildmodel: | DRS-4-4-1000 |
| Aarwheels: | B-B |
| Primemover: | 606SC |
| Builddate: | July 1948 - March 1950 |
| Totalproduction: | 22 |
| Operator: | Pennsylvania Railroad, Esquimalt and Nanaimo, Penn Central |
| Locale: | North America |
| Poweroutput: | 1000abbr=onNaNabbr=on |
| Enginetype: | Straight-6 Four-stroke diesel |
| Rpmrange: | 625 rpm maximum |
| Aspiration: | Turbocharger Elliott Company BF34 (125 hp) |
| Cylindercount: | 6 |
| Cylindersize: | NaNx |
| Displacement: | 1979cuin per cylinder 11874cuin total |
| Transmission: | Electric |
| Tractionmotors: | Westinghouse 340F (4) |
| Generator: | Westinghouse YG42A |
| Locobrakes: | Straight air |
| Trainbrakes: | Air |
The Baldwin DRS-4-4-1000 was a diesel-electric road switcher produced by the Baldwin Locomotive Works from July 1948 - March 1950. The units featured a, six-cylinder prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-B road trucks, with all axles powered. They had a cast steel frame. The units were configured to normally run with the long hood in the forward position.
Only 9 were built for American railroads, with another 13 manufactured in January and February 1949 by the Canadian Locomotive Company for the Esquimalt and Nanaimo Railway, the first railroad in Canada to dieselize its locomotive fleet. The DRS-4-4-1000 was (in most cases) visually indistinguishable from its successor, the RS-12. Only one intact example of the DRS-4-4-1000 is known to exist today (former CPR #8000), and is currently on display in Squamish, British Columbia.
| bgcolor=#cc9966 | Railroad | bgcolor=#cc9966 | Quantity | bgcolor=#cc9966 | Road numbers | notes |
|---|---|---|---|---|---|---|
| Pennsylvania Railroad | 5591 - 5594, 9276, 9277 | to Penn Central #8300-8305 in 1968 | ||||
| Tennessee Central Railway | 75 - 77 |
| bgcolor=#cc9966 | Railroad | bgcolor=#cc9966 | Quantity | bgcolor=#cc9966 | Road numbers |
|---|---|---|---|---|---|
| Canadian Pacific Railway | 8000 - 8012 (units worked the Esquimalt and Nanaimo Railway) 8000 preserved and on display. |