SP Class GS-4 Steam Engine
The GS Class was designed and built for the Southern Pacific Railroad to serve for their Daylight Express service between Los Angeles and San Francisco. Due to the heavy gradients and severe curvature of the 470 mile route, the trains could only achieve an average speed of 48 mph.
Cylinders: 2 - 25.5 x 32in. (648 x 813mm)
Tractive effort: 71,173lb. (32,285kg.)
Fuel (oil): 4,900gallons (5,900 US)
Water: 19,600gallons (23,500 US)
Total weight: 883,000lb. (400.5t)
Length overall (including tender): 110ft. 5.5in. (33,667mm)
Average Speed: 48mph (78km/h)
Built: 1942"