UP2019110063 - Union Pacific, Wellborn, TX, 11-2019
Union Pacific, Wellborn, TX, 11-8-2019. Big Boy 4014 North, SD70ACe 4141 George H. W. Bush. 1923 Ford Model T.
4014 4-cylinder articulated 4-8-8-4 Big Boy. Built in 1941 by the Amercian Locomotive Company (ALCO) in Schenectady, NY. 4014 is the only operatimng Big Boy of the 8 that remain in existence.
Type and origin
References:[1][2]
Power type Steam
Builder American Locomotive Company
Serial number 69585
Build date November 1941
Rebuild date July 2016 - May 2019
Specifications
Configuration:
• Whyte 4-8-8-4
• UIC (2′D)D2′ h4
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Leading dia. 36 in (914 mm)
Driver dia. 68 inches (170 cm)
Trailing dia. 42 in (1,067 mm)
Wheelbase 72 ft 5.5 in (22.09 m)
Length
Locomotive: 85 ft 7.8 in (26.11 m)
Overall: 132 ft 9 7⁄8 in (40.48 m)
Width 11 ft (3.4 m)
Height 16 ft 2 1⁄2 in (4.94 m)
Adhesive weight 540,000 lb (244,940 kilograms)
Loco weight 762,000 lb (345,637 kilograms)
Tender weight 342,200 lb (155,219 kilograms) (2/3 load)
Total weight 1,250,000 lb (566,990 kilograms)
Fuel type No. 5 fuel oil, originally Coal
Fuel capacity 6,450 US gal (24,400 l; 5,370 imp gal) of No. 5 oil
6,100 US gal (23,000 l; 5,100 imp gal) usable
Water cap 25,000 US gal (95,000 l; 21,000 imp gal)
Sandbox cap. 8,000 lb (3,629 kilograms)
Firebox:
• Firegrate area 150 sq ft (14 m2) (grate removed in 2019)
Boiler 95 in (2,400 mm)
Boiler pressure 300 lbf/in2 (2.1 MPa)
Heating surface 5,735 sq ft (533 m2)
• Tubes and flues 5,035 sq ft (468 m2)
• Firebox 720 sq ft (67 m2)
Superheater:
• Type Type E
• Heating area 2,043 sq ft (190 m2)
Cylinders Four, outside
Cylinder size 24 in × 32 in (610 mm × 813 mm)
Valve gear Walschaerts
Safety systems Cab signals
Performance figures
Maximum speed 80 mph (130 km/h)
Power output 7,000 hp (5,200 kW) @ Drawbar
Tractive effort 138,240 lbf (614.9 kN)
Factor of adh. 3.91
Career
Operators Union Pacific
Class 4884-1[3]
Number in class 15
Numbers 4014
Nicknames Big Boy
Delivered December 1941
First run December 1941
Last run July 21, 1959 (revenue)
Retired December 7, 1961
Restored May 1, 2019
Current owner Union Pacific Railroad
Disposition Operational, based in Cheyenne, Wyoming, at the steam shop
SD70ACe 4141 Bush
