Southern Pacific GS-6
Western Pacific GS-64-77 |
|---|
SP GS-6 No. 4467 at the Oakland roundhouse in August 1952 |
| Type and origin |
|---|
| Power type | Steam |
|---|
| Builder | Lima Locomotive Works |
|---|
| Serial number | SP: 8013–8016, 8248–8253
WP: 8017–8022 |
|---|
| Build date | July–August 1943 |
|---|
| Total produced | 10 |
|---|
|
| Specifications |
|---|
Configuration:
| |
|---|
| • Whyte | 4-8-4 |
|---|
| • UIC | 2′D2′ h2 |
|---|
| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
|---|
| Driver dia. | 73+1⁄2 in (1,867 mm) |
|---|
| Axle load | 67,900 lb (30,800 kilograms; 30.8 metric tons) |
|---|
| Adhesive weight | 283,200 lb (128,500 kg; 128.5 t) |
|---|
| Loco weight | 468,400 lb (212,500 kg; 212.5 t) |
|---|
| Total weight | 867,500 lb (393,500 kg; 393.5 t) |
|---|
| Firebox: | |
|---|
| • Grate area | 90 sq ft (8.4 m2) |
|---|
| Boiler pressure | 260 psi (1.79 MPa) |
|---|
| Heating surface | 4,582 sq ft (425.7 m2) |
|---|
Superheater:
| |
|---|
| • Heating area | 2,086 sq ft (193.8 m2) |
|---|
| Cylinder size | 27 in × 30 in (686 mm × 762 mm) |
|---|
| Valve gear | Walschaerts |
|---|
|
|
|
The Southern Pacific Class GS-6 is a class of semi-streamlined 4-8-4 "Northern" type steam locomotive operated by the Southern Pacific Railroad (SP) from 1943 to 1958 and the Western Pacific Railroad (WP) from 1943 to 1953. A total of sixteen were built by the Lima Locomotive Works, numbered 4460 through 4469 by SP and 481 through 486 by WP. GS stands for "Golden State" or "General Service".
