[LiveSteam]

From Wikipedia
With tender 1,250,000 lb (566,990.5 kilograms)

Power type Steam
Reference:[1]
Builder American Locomotive Company
Build date 1941 (20), 1944 (5)
Total produced 25
Configuration 4-8-8-4
UIC classification (2′D)D2′ h4
Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Leading wheel
diameter 36 in (914 mm)
Driver diameter 68 in (1,727 mm)
Trailing wheel
diameter 42 in (1,067 mm)
Wheelbase 72 ft 5.5 in (22.09 m)
Length Locomotive: 85 ft 3.4 in (25.99 m)
Overall: 132 ft 9 1⁄4 in (40.47 m)
Width 11 ft (3.4 m)
Height 16 ft 2 1⁄2 in (4.94 m)
Weight on drivers 540,000 lb (244,939.9 kilograms)
Locomotive weight 762,000 lb (345,637.4 kilograms)
Tender weight 342,200 lb (155,219.3 kilograms) (2/3 load)
Locomotive and tender
combined weight 1,250,000 lb (566,990.5 kilograms)
Fuel type Coal
Fuel capacity 28 short tons (25.4 t; 25.0 long tons)
Water capacity 25,000 US gal (95,000 l; 21,000 imp gal)
Boiler 95 in (2,400 mm)
Boiler pressure 300 lbf/in² (2.1 MPa)
Firegrate area 150 sq ft (14 m2)
Heating surface:
Tubes and flues 5,035 sq ft (468 m2)
Heating surface:
Firebox 720 sq ft (67 m2)
Heating surface:
Total 5,735 sq ft (533 m2)
Superheater type Type A
Superheater area 2,043 sq ft (190 m2)
Cylinders 4
Cylinder size 23.75 × 32 in (603 × 813 mm)
Top speed 80 mph (130 km/h)
Tractive effort 135,375 lbf (602.18 kN)
Factor of
adhesion 4.11
Career
Railroad(s) Union Pacific Railroad
Class 4000–4019: 4884-1
4020–4024: 4884-2
Last run July 21, 1959
Preserved 4004, 4005, 4006, 4012, 4014, 4017, 4018, 4023