Friday, March 18, 2016

Friday Night Steam

Big Boy time!!




When 4014's restoration is completed, the engine will join the railroad's never-retired 4-8-4 #844 and the 4-6-6-4 Challenger #3985 in excursion service and will officially be "the world's largest operational steam locomotive," displacing the 3985. Union Pacific hopes to return the Big Boy 4014 to active excursion service between 2017 to 2019. The restoration includes a plan to convert the locomotive to oil firing. Plans for operating the locomotive include the celebration of the 150th anniversary of the completion of the transcontinental railroad in May 2019 and the 4-8-8-4's 75th anniversary as well.


Union Pacific 4014
Union Pacific "Big Boy" Number 4014 on static display at the RailGiants Train Museum in Pomona, California, United States
Union Pacific "Big Boy" Number 4014 on static display at the RailGiants Train Museum in Pomona, California
[hide]Type and origin
References:[1]
Power type Steam
Builder American Locomotive Company
Serial number 65572
Build date September 1941
[hide]Specifications
Configuration 4-8-8-4
UIC class (2′D)D2′ h4
Gauge 4 ft 8 12 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 78 in (40.48 m)
Width 11 ft (3.4 m)
Height 16 ft 2 12 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)
Loco & tender weight 1,250,000 lb (566,990 kilograms)
Fuel type Coal
Fuel capacity 28 short tons (25.4 t; 25.0 long tons)
Water cap 24,000 US gal (91,000 l; 20,000 imp gal)
Firebox:
 • Firegrate area
150 sq ft (14 m2)
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 A
 • Heating area 2,043 sq ft (190 m2)
Cylinders 4
Cylinder size 23.75 in × 32 in (603 mm × 813 mm)
[hide]Performance figures
Maximum speed 80 mph (130 km/h)
Power output 6,290 hp (4,690 kW)
Tractive effort 135,375 lbf (602.18 kN)
Factor of adh 4.11
[hide]Career
Operators Union Pacific Railroad
Numbers 4014
Nicknames Big Boy
Last run July 21, 1959
Retired December 7, 1961
Restored Commenced August 2013
Current owner Union Pacific Railroad
Disposition Undergoing restoration for excursion service, and will be based on Cheyenne, Wyoming, in roundhouse once restoration is completed
Restoration includes conversion from coal to no. 5 oil.






4 comments :

  1. I would so love to see it under power when the restoration is complete. What a machine.
    As an aside, there are two aircraft that have maximum take off weights more than the combined weight of the Big Boy with tender (1,250,000 lb)
    The Antonov An-225 at 1,410,958 and the Airbus A380-800F at 1,300.00lb. Both cargo aircraft.
    https://www.youtube.com/watch?v=pDcInzw4sjU

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    Replies
    1. That was some video! Cannot believe all that landing gear!

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  2. For we East coasters, I believe the nearest Big Boy is the one at Steamtown National Park. The wife and I stopped there when we were coming home from a grape juice appreciation tour of the finger lakes. That is one huge mass of metal.

    Very good post for Friday steam. Thank you.

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    Replies
    1. Going to try to get to Steamtown sometime this year, John. I hear it's fabulous!

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