Union Pacific 844

From Wikipedia, the free encyclopedia

Union Pacific 844
Union Pacific 844
UP 844 at Del Rio, Texas
Power type Steam
Builder American Locomotive Company
Configuration 4-8-4
Gauge ft 8½ in (1435 mm)
Driver size 80 in.
Wheelbase 98 ft. 5 in. (locomotive and tender)
Weight on drivers 266,490 lb.
Total weight 486,340 lb.
Locomotive and tender combined weight 907,890 lb.
Fuel type No. 5 fuel oil, originally coal
Tender capacity 23,500 gallons water, 6,200 gallons oil
Boiler 86-3/16 in. diameter
Boiler pressure 300 psi
Fire grate area grate removed in 1945
Heating surface: Tubes 2,204 ft²
Heating surface: Flues 1,578 ft²
Heating surface: Firebox 442 ft²
Heating surface: Total 4,224 ft²
Superheater area 1,400 ft²
Cylinder size 25 in. diameter, 32 in. stroke
Factor of adhesion 4.18
Career Union Pacific
Class FEF-3
Number 844
Delivered 1944
Retired never retired
Disposition operates in occasional excursion service

Union Pacific 844 is a 4-8-4 steam locomotive owned by Union Pacific Railroad. It was the last steam locomotive delivered (in 1944) to Union Pacific and is unique in that it is the only steam locomotive never retired by a North American Class I railroad. It was designed as a passenger engine and pulled such trains as the Overland Flyer, Los Angeles Limited, Portland Rose and Challenger. It was reassigned to freight service when diesel-electric locomotives took over passenger service and operated from 1957 to 1959 in Nebraska. It was saved from being scrapped in 1960 and is now used on excursion trains.

From 1962-1989, this locomotive was numbered UP 8444 due to a conflict with the railroad's numbering plan for the EMD GP30 locomotives that UP owned at the time. After the conflicting GP30 was retired from service in June 1989, 8444 was renumbered back to 844. Interestingly, there is now an EMD SD70ACe in UP's roster numbered 8444.[1]

A second 4-8-4, UP 838, is kept in the shops at Cheyenne, Wyoming so that spare parts for 844 can be cannibalized from it.

Union Pacific 844 approaching Hutchinson, Kansas.
Enlarge
Union Pacific 844 approaching Hutchinson, Kansas.

[edit] External links


Historic/preserved locomotives owned by Union Pacific
Steam locomotives: 844 (4-8-4) · 1243 (4-6-0) · 3985 (4-6-6-4)
Diesel locomotives: 951 (E9) · 1234 (SW10) · 6936 (DDA40X)