Baldwin RS-12
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A preserved RS-12 at the Travel Town Museum.
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| Type and origin | |
|---|---|
| Power type | Diesel-electric |
| Builder | Baldwin Lima Hamilton Corporation |
| Model | RS-12 |
| Build date | April 1951–May 1956 |
| Total produced | 50 |
| Specifications | |
|---|---|
| Configuration: |
|
| • AAR | B-B |
| • UIC | Bo′Bo′ |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Length | 58 ft 6 in (17.83 m) |
| Width | 10 ft 0 in (3.05 m) |
| Height | 14 ft 0 in (4.27 m) |
| Loco weight | 232,000 lb (105,000 kg) |
| Fuel capacity | 900 US gal (3,400 l; 750 imp gal) |
| Lubricant cap. | 160 US gal (610 l; 130 imp gal) |
| Coolant cap. | 250 US gal (950 l; 210 imp gal) |
| Sandbox cap. | 30 cu ft (0.85 m3) |
| Prime mover | Baldwin 606A |
| Engine type | Four-stroke diesel |
| Aspiration | Turbocharged |
| Displacement | 11,874 cu in (195 L) |
| Generator | DC generator |
| Traction motors | DC traction motors |
| Cylinders | In-line 6 |
| Cylinder size | 12 3⁄4 in × 15 1⁄2 in (324 mm × 394 mm) |
| Transmission | Electric |
| Loco brake | Straight air |
| Train brakes | Air 6-SL, or 24-RL |
| Performance figures | |
|---|---|
| Maximum speed |
18:74 gear ratio: 65 mph (105 km/h); 18:65 gear ratio: 75 mph (121 km/h) |
| Power output | 1,200 hp (895 kW) |
The Baldwin RS-12 railroad locomotive was a 1,200 hp (895 kW) diesel-electric road-switcher configured with an AAR type B-B wheel arrangement. It was the follow-on model to the 1,000 hp DRS-4-4-1000, first introduced in 1948. It was more successful than its predecessor selling 50 units to eight railroads, versus 22 units to three railroads. Only one railroad, The Pennsylvania Railroad bought both models.
When Baldwin Locomotive Works merged with Lima-Hamilton the combination Baldwin-Lima-Hamilton decided to concentrate locomotive production at Baldwin's Eddystone, Pennsylvania plant. There was still one outstanding order for Lima LRS-1200s, but the customer, New York Central Railroad agreed to receive RS-12s instead.
The locomotive could be ordered with either a steam generator for steam heat, or dynamic brakes contained within the short hood. McCloud River Railroad No. 32 and 33 were the only two ordered with dynamic brakes of the fifty units built. One survives and is preserved in operational condition in the "Skunk Train" livery of California Western 56 (Locomotive) at Travel Town Museum in Griffith Park.
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Wikipedia