Union Pacific No. 844 running through Painted Rocks, Nevada on September 15, 2009
Type and origin
References:[1]
Power type
Steam
Builder
American Locomotive Company (ALCO)
Serial number
72791
Build date
December 24, 1944
Rebuild date
1959–1960
Specifications
Configuration:
• Whyte
4-8-4
• UIC
2′D2′ h2
Gauge
4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.
80 in (2,032 mm)
Wheelbase
Loco & tender: 98 ft 5 in (30.00 m)
Length
114 ft 2+5⁄8 in (34.81 m)
Width
11 ft 1+1⁄8 in (3.38 m)
Height
15 ft 2 in (4.62 m)
Axle load
66,622.5 lb (30,219.5 kg)
Adhesive weight
266,490 lb (120,878 kg)
Loco weight
486,340 lb (220,600 kg)
Tender weight
421,550 lb (191,212 kg)
Total weight
907,890 lb (411,812 kg)
Fuel type
No. 5 fuel oil, originally coal
Fuel capacity
6,200 US gal (23,000 L)
Water cap.
23,500 US gal (89,000 L)
Fuel consumption
15–25 US gal (57–95 L) of fuel oil per mile 100–200 US gal (380–760 L) of water per mile
Firebox:
• Grate area
100.2 sq ft (9.31 m2) (grate removed in 1945)
Boiler
86 3⁄16 in (2189.2 mm) diameter 100 in (2,540 mm) (OD)
Boiler pressure
300 lbf/in2 (2.07 MPa)
Heating surface:
• Firebox
442 sq ft (41.1 m2)
• Tubes
2,204 sq ft (204.8 m2)
• Flues
1,579 sq ft (146.7 m2)
• Total surface
4,225 sq ft (392.5 m2)
Superheater:
• Type
Type A
• Heating area
1,400 sq ft (130 m2)
Cylinders
Two, outside
Cylinder size
25 in × 32 in (635 mm × 813 mm)
Performance figures
Maximum speed
120 mph (190 km/h)
Power output
4,850 hp (3,620 kW)
Tractive effort
63,800 lbf (283.8 kN)
Factor of adh.
4.18
Career
Operators
Union Pacific Railroad
Class
FEF-3
Numbers
UP 844
UP 8444
Nicknames
"The Living Legend"
Delivered
December 1944
First run
December 1944 (revenue service) 1960 (excursion service)
Last run
1959 (revenue service)
Restored
1960 (rebuilt, but never retired)
Current owner
Union Pacific Railroad (Union Pacific heritage fleet)
Disposition
Stored in operational condition
Union Pacific 844 is a class "FEF-3" 4-8-4 "Northern" type steam locomotive owned and operated by the Union Pacific Railroad for its heritage fleet. Built in December 1944 by the American Locomotive Company (ALCO) of Schenectady, New York, No. 844 is one of four surviving FEF series locomotives and the only one in operation.
The locomotive operated in revenue service until 1959. It was stored while awaiting scrapping, along with the rest of the UP steam locomotive fleet. In 1960, railroad leaders recognized the benefits of having a steam program and retained No. 844 for special activities, the kernel of what has become the Union Pacific's heritage fleet.[2] Today, it is one of UP's oldest serving locomotives[3] and the only steam locomotive never retired by a North American Class I railroad.[4]
^"Union Pacific Steam Locomotive No. 844" (PDF) (Press release). Union Pacific. February 2019. Archived from the original (PDF) on May 12, 2019. Retrieved May 12, 2019.
^"Union Pacific Steam Program". American-Rails.com. Archived from the original on 2017-10-06. Retrieved 2019-06-26.
^Klein, Maury (2011). Union Pacific: The Reconfiguration: America's Greatest Railroad from 1969 to the Present. New York: Oxford University Press. p. 163.
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