ALCO RSD-7
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| Power type | Diesel-electric |
|---|---|
| Builder | ALCO |
| Model | RSD-7 |
| Total production | 17 |
| AAR wheel arr. | C-C |
| UIC classification | Co'Co' |
| Gauge | 4 ft 8½ in (1435 mm) |
| Prime mover | ALCO 244 |
| Cylinders | V16 |
| Power output | DL-600: 2,250 hp (1,700 kW) DL-600A: 2400 hp (1800 kW) |
The ALCO RSD-7 was a diesel-electric locomotive of the road switcher type built by ALCO at Schenectady, New York between January 1954 and January 1956. Two versions were built, with the same RSD-7 model designation but different specifications and power ratings, although both used the ALCO 244 engine in V16 configuration. Specification DL-600, of which only two were built, developed 2250 hp (1700 kW); revised specification DL-600A, numbering fifteen locomotives, was rated at 2400 hp (1800 kW). The RSD-7 was superseded by the ALCO 251-engined ALCO RSD-15, which looks very similar.[1]
Both rode on a pair of three-axle trucks with all three axles on each truck powered; this is a C-C wheel arrangement. These trucks have an unequal axle spacing due to traction motor positioning; the outer two axles on each truck are closer together than the inner two. The six-motor design allowed better tractive effort at lower speeds.
[edit] References
- ^ Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, WI: Kalmbach Publishing Co.. ISBN 0-89024-026-4.
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| Diesel-electric locomotives built by ALCO | |
|---|---|
| Switchers: | HH series, S-1, S-2, S-3, S-4, S-5, S-6, T-6, SB-8/SSB-9 |
| RS series: | RS-1, RS-2, RS-3, RS-11, RS-27, RS-32, RS-36 |
| RSC series: | RSC-2, RSC-3 |
| RSD series: | RSD-1, RSD-4, RSD-5, RSD-7, RSD-12, RSD-15 |
| Cab units: | DL-103b, DL-105, DL-107, DL-109, DL-110, DL-203, FA, FB, PA, PB |
| Century series: | C415, C420, C424, C425, C430, C628, C630, C636, C855 |
| Diesel-hydraulics: | DH643 |
