Union Pacific FEF Series
The Union Pacific FEF Series consists of forty-five 4-8-4 "Northern" steam locomotive types built by the American Locomotive Company (ALCO) between 1937 and 1944 and operated by the Union Pacific Railroad until 1959.
|Union Pacific FEF Series|
The 45 locomotives were the last steam locomotives built for the Union Pacific. They represented the epitome of dual-service steam locomotive development; funds and research were being concentrated into the development of diesel-electric locomotives. Designed to burn coal, they were converted to run on fuel oil in 1946. They pulled a variety of passenger trains, such as the Overland Limited, Los Angeles Limited, Portland Rose and Challenger, until diesel-electric locomotives took over passenger service. Many FEF Series locomotives were later reassigned to freight service during the last few years of their careers.
Four FEF Series locomotives survive today, including No. 844, which remains in operational condition and now runs in excursion service. Today, the 844 is one of the Union Pacific's oldest serving locomotives and the only steam locomotive never retired by a North American Class I railroad.
During the late 1930s, the rising trainloads started to exceed the limits of the 4-8-2 that were the mainstay of the UP passenger operations. One day, in 1937, with UP President William Jeffer's business car in the rear, a "7000" Class 4-8-2 demonstrated the lack of steaming power inherent in the type. Even when the train was waiting for rescue, a telegram was sent to ALCO in Schenectady seeking something better. The result was a superb class of 45 locomotives that could run at 100 mph and produce between 4,000 and 5,000 drawbar horsepower. They also ran about 14,000 miles a month.
The FEF Series consisted of three classes of steam locomotives: FEF-1, FEF-2, and FEF-3.
|Serial Nos.||Year built||UP No.||Notes|
|FEF-1||20||American Locomotive Company||S-1769||68808-68827||1937||800–819||Converted to oil fuel in 1945-1946.|
|FEF-2||15||American Locomotive Company||S-1811||69161-69175||1939||820–834||Converted to oil fuel in 1945-1946.|
|FEF-3||10||American Locomotive Company||S-1937||72782-72791||1944||835–844||Converted to oil fuel in 1945-1946. No. 844 in excursion service since 1960; renumbered to 8444 from 1962 to 1989.|
The first twenty locomotives, numbered 800–819, were delivered by ALCO in 1937. The "800"s as a whole followed – like Northumbrian 108 years earlier – the simplest possible arrangement of only having two outside cylinders. Fitting ALCO's lateral motion devices to the leading coupled wheels eased the negotiation of curves. Complicated accessories often spoiled the basic simplicity of so many US locomotives, but UP resisted most of them, resulting in an elegant, uncluttered appearance. Despite frequently moving at speeds over 100 mph (161 km/h), the forces and stresses on the coupling and connecting rods were kept within acceptable limits. There were thus excellent results, and there were many reports[by whom?] of the class reaching the design limit of 110 mph (177 km/h).
The second batch of fifteen was delivered in 1939. These had several improvements, including larger cylinders, better tractive effort, taller driving wheels, and smoke deflectors on the sides of the smokebox. The greatest change, however, was the provision of a fourteen wheeled "pedestal" or "centipede" tender, in place of the twelve wheeled ones of the first twenty locomotives. Thus, the first locomotives became known as "FEF-1," while these were known as "FEF-2."
Except for the use of some substitute materials, the final batch of ten were nearly identical to the FEF-2. After World War II, coal supplies were affected by a series of strikes. In order to safeguard operations, UP converted the 800s to oil burning, and a 6,000 US gallons (23,000 l; 5,000 imp gal) tank was fitted in the bunker space. Otherwise, few modifications were needed to ensure years of mainline service. These were the last steam locomotives delivered for the UP. Like many of the "late era" steam locomotives, their final design was cut short by the advent of diesel locomotives, the new monarchs of the rails. A former manager of the Union Pacific Steam Program once commented on the FEF series, saying that "although it is stated that the UP FEF Series were designed to safely operate at 120 mph (190 km/h), no one really knows how fast the final 4-8-4 could go, the last FEF-3 was actually never retired."
Four FEF Series locomotives survive. Two, No. 814 (FEF-1) and No. 833 (FEF-2), are on static display. A third, No. 844 (FEF-3), has remained operational and is currently used in excursion service. There is also a fourth locomotive, No. 838 (FEF-3); however it is solely used as a source of spare parts for No. 844.
|Type||Number||Image||Date built||Serial number||Location||Coordinates||Notes|
|FEF-1||814||September 1937||68822||RailsWest Railroad Museum, Council Bluffs, Iowa|
|FEF-2||833||October 1939||69174||Utah State Railroad Museum, Ogden, Utah||Originally on display at Pioneer Park in Salt Lake City, Utah.|
|FEF-3||838||December 1944||72785||Union Pacific Railroad, Cheyenne, Wyoming||Source of spare parts for 844.|
|FEF-3||844||December 1944||72791||Union Pacific Railroad, Cheyenne, Wyoming||The only steam locomotive never retired by a North American Class I railroad.|
|Wikimedia Commons has media related to Union Pacific FEF-1.|
|Wikimedia Commons has media related to Union Pacific FEF-2.|
|Wikimedia Commons has media related to Union Pacific FEF-3.|
- "Union Pacific 4-8-4 "Northern" Locomotives in the USA". www.steamlocomotive.com. Retrieved 2019-06-05.
- See Edmonson, Harold A. and Goodheart, David. "Union Pacific's 8444," at 1 (1989, Goodheart Publications).
- Klein, Maury (2011). Union Pacific: The Reconfiguration: America's Greatest Railroad from 1969 to the Present. New York: Oxford University Press. p. 163.
- Union Pacific Railroad (2012). "Living Legend No. 844". UP.com. Retrieved February 16, 2014.
- UP historical locomotives Archived September 6, 2011, at the Wayback Machine
- Hollingsworth, Brian; Arthur F. Cook (1996). The Great Book of Trains. Salamander Books Ltd. ISBN 0-517-18462-1.
- Hollingsworth, Brian (2000). The Illustrated Dictionary of Trains of the World. London: Salamander Books Ltd. ISBN 1-84065-177-6.
- Union Pacific Northerns at steamlocomotive.com maintained by Wes Barris