Southern Pacific class GS-3
| Southern Pacific GS-3 | |
|---|---|
|
Southern Pacific GS-3 locomotives. | |
| Type and origin | |
| Power type | Steam |
| Builder | Lima Locomotive Works |
| Serial number | 7721–7734 |
| Build date | October–December 1937 |
| Total produced | 14 |
| Specifications | |
| Configuration | 4-8-4 |
| UIC classification | 2′D2′ h2 |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Driver diameter | 80 in (2,032 mm) |
| Axle load | 67,000 lb (30.4 tonnes) |
| Weight on drivers | 267,300 lb (121.2 tonnes) |
| Locomotive weight | 460,000 lb (208.7 tonnes) |
| Locomotive and tender combined weight | 818,880 lb (371.4 tonnes) |
| Fuel type | Fuel oil |
| Fuel capacity | 6,010 US gal (22,800 l; 5,000 imp gal) |
| Water capacity | 22,000 US gal (83,000 l; 18,000 imp gal) |
| Boiler pressure | 280 psi (1.93 MPa) |
| Firegrate area | 90.4 sq ft (8.40 m2) |
| Heating surface: – Total | 4,890 sq ft (454 m2) |
| Superheater area | 2,565 sq ft (238.3 m2) |
| Cylinders | Two, outside |
| Cylinder size | 26 in × 32 in (660 mm × 813 mm) |
| Performance figures | |
| Tractive effort | 62,800 lbf (279.35 kN), 76,050 lbf (338.29 kN) with booster |
| Career | |
| Operator(s) | Southern Pacific Company |
| Class | GS-3 |
| Number(s) | 4416–4429 |
| First run | November–December 1937 |
| Retired | 1957 |
| Disposition | All scrapped |
The GS-3 was a streamlined 4-8-4 Northern type steam locomotive that served the Southern Pacific Company from 1938 to 1957. They were built by Lima Locomotive Works and were numbered 4416 through 4429. GS stands for "Golden State" or "General Service."
The GS-3 had an appearance similar to the GS-2. The GS-3s were streamlined and designed for high-speed passenger service. Like the GS-2, they featured a silver smokebox with a cone-shaped single headlight casing, skyline casing on the top of the boiler, skirting on the sides, an air horn to supplement the whistle and teardrop classification lights. The only major difference in appearance was the increase in driver size.
They received the orange and red "Daylight" paint scheme. They were primarily used on Southern Pacific's premier passenger train at the time, the Coast Daylight. In later years after being replaced by newer GS class engines, they were painted black, had their side skirting removed for easier maintenance, and were reassigned to the San Jose-San Francisco commute trains, freight service, and made occasional appearances on the San Joaquin Daylight.
No GS-3 locomotives survive.
References
- Diebert, Timothy S. and Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium. Shade Tree Books. ISBN 0-930742-12-5.
External links
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Wikimedia Commons has media related to Southern Pacific class GS-3. |
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