A postcard of one of the most notable preserved US steam locomotives: the last engine built by the railway affectionately known as the Cotton Belt, officially as the St Louis Southwestern, in 1943; a 4-8-4 now in the Arkansas Railroad Museum.
Some Specifications
Driver diameter: 70 inches (1,778 mm)Axle load: 62,000 lb (28.1 tonnes)
Weight on drivers: 248,000 lb (112.5 tonnes)
Locomotive weight: 425,500 lb (193.0 tonnes)
Tender weight: 312,000 lb (141.5 tonnes)
Locomotive & tender combined weight: 737,500 lb (334.5 tonnes)
Fuel type: Oil
Fuel capacity: 5,000 US gallons (19,000 litres; 4,200 imperial gallons)
Water capacity: 15,000 US gal (57,000 l; 12,000 imp gal)
Boiler pressure: 250 lbf/in² (1.72 MPa)
Firegrate area: 88.3 sq ft (8.20 m2)
Heating surface: Firebox: 469 sq ft (43.6 m2)
Superheater area: 1,962 sq ft (182.3 m2)
Cylinders: Two 26 × 30 in (660 × 762 mm)
Valve gear: Walschaerts
Valve type: Piston valves
Tractive effort: 61,564 lbf (273.85 kN)
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