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Big Boy, X4012, Union Pacific, Alco 4-8-8-4, articulated steam locomotive, Scranton, 1950s
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Code Number:
VRFV01P14_18
Title:
Big Boy, X4012, Union Pacific, Alco 4-8-8-4, articulated steam locomotive, Scranton, 1950s
Builder: American Locomotive Company (ALCO)
Build date: 1941 (20), 1944 (5)
Total produced: 25
Configuration: 4-8-8-4
UIC classification: (2'D)D2' h4
Gauge: 1,435 mm (4 feet 8 1?2 inches)
Leading wheel diameter: 914 mm (36 inches)
Career: Union Pacific Railroad
Driver diameter: 1,727 mm (68 inches)
Trailing wheel diameter: 1,067 mm (42 inches)
Wheelbase: 22.09 meters (72 feet 5.5 inches)
Locomotive Length: 25.99 meters (85 feet 3.4 inches)
Overall: 40.47 meters (132 feet 9 1?4 inches)
Width: 3.4 meters (11 feet)
Height: 4.94 meters (16 feet 2 1?2 inches)
Weight on drivers: 244,939.9 kilograms (540,000 pounds)
Locomotive weight: 345,637.4 kilograms (762,000 pounds)
Tender weight: 155,219.3 kilograms (342,200 pounds) (2/3 load)
Locomotive & tender combined weight: 566,990.5 kilograms (1,250,000 pounds)
Fuel type: Coal
Fuel capacity: 30 short tons (27.2 tons)
Water capacity: 83,000 l (22,000 US gal ; 18,000 imp gal)
Boiler: 2,400 mm (95 inches)
Boiler pressure: 2.1 MPa (300 lbf/in )
Firegrate area: 14 m2 (150 square feet)
Heating surface: Tubes and flues 468 m2 (5,035 square feet)
Firebox: 720 67 m2 (square feet)
Heating surface: Total 533 m2 (5,735 square feet)
Superheater type: Type A
Superheater area: 190 m2 (2,043 square feet)
Cylinders: Four
Cylinder size: 603 813 mm (23.75 32 inches)
Top speed: 130 km/h (80 mph)
Tractive effort: 602.18 kN (135,375 lbf)
Factor of adhesion: 4.11
Class: 4000?4019: 4884-1
4020?4024: 4884-2
Last run: July 21, 1959
Disposition: Eight preserved, remainder scrapped
Preserved: 4004, 4005, 4006, 4012, 4014, 4017, 4018, 4023
Keywords:
Pennsylvania, structure, State, America, USA, Union Pacific Railroad Company+, Steam Locomotive, Engine, Steamer, Power, Loco, Vehicle, Freight Train, Railroad, Commerce, Transportation, business, Track, rail, Transport, freightage, hauling, Rail Road, shipment, shipping, transit, Railroadiana, History, Archives, Railfan, Commercial-Shipping, Industry, Industrial, Retro, History
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Big Boy, X4012, Union Pacific, Alco 4-8-8-4, articulated steam locomotive, Scranton, 1950s
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Add to Lightbox Add to Cart E-Postcard
Code Number:
VRFV01P14_18
Title:
Big Boy, X4012, Union Pacific, Alco 4-8-8-4, articulated steam locomotive, Scranton, 1950s
Builder: American Locomotive Company (ALCO)
Build date: 1941 (20), 1944 (5)
Total produced: 25
Configuration: 4-8-8-4
UIC classification: (2'D)D2' h4
Gauge: 1,435 mm (4 feet 8 1?2 inches)
Leading wheel diameter: 914 mm (36 inches)
Career: Union Pacific Railroad
Driver diameter: 1,727 mm (68 inches)
Trailing wheel diameter: 1,067 mm (42 inches)
Wheelbase: 22.09 meters (72 feet 5.5 inches)
Locomotive Length: 25.99 meters (85 feet 3.4 inches)
Overall: 40.47 meters (132 feet 9 1?4 inches)
Width: 3.4 meters (11 feet)
Height: 4.94 meters (16 feet 2 1?2 inches)
Weight on drivers: 244,939.9 kilograms (540,000 pounds)
Locomotive weight: 345,637.4 kilograms (762,000 pounds)
Tender weight: 155,219.3 kilograms (342,200 pounds) (2/3 load)
Locomotive & tender combined weight: 566,990.5 kilograms (1,250,000 pounds)
Fuel type: Coal
Fuel capacity: 30 short tons (27.2 tons)
Water capacity: 83,000 l (22,000 US gal ; 18,000 imp gal)
Boiler: 2,400 mm (95 inches)
Boiler pressure: 2.1 MPa (300 lbf/in )
Firegrate area: 14 m2 (150 square feet)
Heating surface: Tubes and flues 468 m2 (5,035 square feet)
Firebox: 720 67 m2 (square feet)
Heating surface: Total 533 m2 (5,735 square feet)
Superheater type: Type A
Superheater area: 190 m2 (2,043 square feet)
Cylinders: Four
Cylinder size: 603 813 mm (23.75 32 inches)
Top speed: 130 km/h (80 mph)
Tractive effort: 602.18 kN (135,375 lbf)
Factor of adhesion: 4.11
Class: 4000?4019: 4884-1
4020?4024: 4884-2
Last run: July 21, 1959
Disposition: Eight preserved, remainder scrapped
Preserved: 4004, 4005, 4006, 4012, 4014, 4017, 4018, 4023
Keywords:
Pennsylvania, structure, State, America, USA, Union Pacific Railroad Company+, Steam Locomotive, Engine, Steamer, Power, Loco, Vehicle, Freight Train, Railroad, Commerce, Transportation, business, Track, rail, Transport, freightage, hauling, Rail Road, shipment, shipping, transit, Railroadiana, History, Archives, Railfan, Commercial-Shipping, Industry, Industrial, Retro, History
Caption Disclaimer

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