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Southern Pacific GS-1 Type and origin Power type Steam Builder Baldwin Locomotive Works Serial number T&NO: 61390–61391, 61408–61409 Build date May–July 1930 Total produced 14
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)Wheelbase 88.23 ft (26,893 mm) Axle load 67,000 lb (30,000 kilograms; 30 metric tons) Adhesive weight 262,000 lb (119,000 kg; 119 t) Loco weight 442,300 lb (200,600 kg; 200.6 t) Total weight 733,300 lb (332,600 kg; 332.6 t) Fuel type Fuel oil Fuel capacity 4,690 US gal (17,800 L; 3,910 imp gal) Water cap. 16,150 US gal (61,100 L; 13,450 imp gal) Firebox: • Grate area 90.2 sq ft (8.38 m2 ) Boiler pressure 250 psi (1.72 MPa) Feedwater heater Worthington Type S, No. 5 Heating surface: • Firebox 356 sq ft (33.1 m2 ) • Total surface 4,858 sq ft (451.3 m2 ) Superheater: • Heating area 2,565 sq ft (238.3 m2 ) Cylinders Two, outside Cylinder size 27 in × 30 in (686 mm × 762 mm) Valve gear Walschaerts Valve type Piston
The GS-1 was a 4-8-4 Northern type steam locomotive that served the Southern Pacific Railroad and its Texas subsidiary the Texas and New Orleans Railroad from 1930 to 1956. They were built by Baldwin Locomotive Works and were numbered 4400 through 4409. GS stands for "Golden State" or "General Service."
The GS-1 had all of the basic steam locomotive features; a silver smokebox with a mounted single headlight with a bell mounted just above it, teardrop classification lights, and were all equipped with Hancock 3-chime steamboat whistles.
They were assigned to various passenger trains throughout the SP system, and ended their careers on the San Jose -San Francisco commutes .
No GS-1 locomotives survive.
References
Diebert, Timothy S.; Strapac, Joseph A. (1987). Southern Pacific Company Steam Locomotive Conpendium . Shade Tree Books. ISBN 0-930742-12-5
