UP 844 at
Del Rio, TexasPower typeSteam-pistonBuilder
American Locomotive CompanyConfiguration4-8-4Gauge4
ft 8½
in (1435
mm)
Driver size80 in.Wheelbase98 ft. 5 in. (locomotive and
tender)Weight on drivers266,490 lb.Total weight486,340 lb.Locomotive and tender combined weight907,890 lb.Fuel type
No. 5 fuel oil, originally
coalTender capacity23,500 gallons water, 6,200 gallons oilBoiler86-3/16 in. diameterBoiler pressure300 psiFire grate area100 ft² (grate removed in 1945)Heating surface: Tubes2,204 ft²Heating surface: Flues1,578 ft²Heating surface: Firebox442 ft²Heating surface: Total4,224 ft²Superheater area1,400 ft²Cylinder size25 in. diameter, 32 in. stroke
Factor of adhesion4.18Career
Union PacificClassFEF-3Number844Delivered1944RetiredNever retiredDispositionoperates in occasional excursion serviceSome More Information::mop:
http://en.wikipedia.org/wiki/Union_Pacific_844
Some links about 844
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 company and public excursion trains, along with revenue freight during ferry moves.
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, the GP30 is preserved and operable and 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.