Today, the only Challenger locomotives that survive were both owned by Union Pacific. One such locomotive, Union Pacific 3985, was operated by the Union Pacific Railroad in excursion service from 1981 to 2010, when mechanical problems took it out of service. It was retired in January 2020 due to its poor mechanical condition[2] and subsequently donated to the Railroading Heritage of Midwest America, where it is now undergoing a second restoration.[3][4][5] The second example, Union Pacific 3977 is on static display in Cody Park North Platte, Nebraska.
Though originally intended for freight service, many units could be found leading passenger consists as well. Railroads that used the Challenger type locomotive include:
4664, redirects, here, year, millennium, number, 4000, number, whyte, notation, railroad, steam, locomotive, that, four, leading, wheels, followed, coupled, driving, wheels, second, driving, wheels, four, trailing, wheels, commonly, known, challengers, union, . 4664 redirects here For the year see 5th millennium For the number see 4000 number In Whyte notation a 4 6 6 4 is a railroad steam locomotive that has four leading wheels followed by six coupled driving wheels a second set of six driving wheels and four trailing wheels 4 6 6 4 s are commonly known as Challengers 1 Union Pacific Challenger No 3985 is an example of a 4 6 6 4 locomotive Other equivalent classifications are UIC classification 2CC2 also known as German classification and Italian classification French classification 230 032Turkish classification 35 35Swiss classification 3 5 3 5The UIC classification is refined to 2 C C2 for Mallet locomotives Challengers were most common in the Union Pacific Railroad but many other railroads ordered them as well An expansion for the Union Pacific Challenger class was the Union Pacific Big Boy class being a 4 8 8 4 instead of a 4 6 6 4 Today the only Challenger locomotives that survive were both owned by Union Pacific One such locomotive Union Pacific 3985 was operated by the Union Pacific Railroad in excursion service from 1981 to 2010 when mechanical problems took it out of service It was retired in January 2020 due to its poor mechanical condition 2 and subsequently donated to the Railroading Heritage of Midwest America where it is now undergoing a second restoration 3 4 5 The second example Union Pacific 3977 is on static display in Cody Park North Platte Nebraska Though originally intended for freight service many units could be found leading passenger consists as well Railroads that used the Challenger type locomotive include 4 6 6 4 construction roster Railroad quantity Class Road numbers Builder Build year NotesClinchfield Railroad 12 new 6 secondhand E 1 650 657 ALCO 1942 1943 Scrapped between 1953 and 1958E 2 660 663 ALCO 1947 Scrapped between 1955 and 1959E 3 670 675 ALCO 1943 Ex D amp RGW acquired 1947 Scrapped 1959Delaware and Hudson Railway 40 J 1500 1539 ALCO 1940 1946 Scrapped between 1951 and 1959Denver and Rio Grande Western Railroad 21 L 105 3700 3709 Baldwin 1938 Scrapped between 1952 and 1958L 105 3710 3714 Baldwin 1942 Scrapped between 1954 and 1956L 97 3800 3805 ALCO 1943 To Clinchfield Railroad in 1947 Scrapped 1959Great Northern Railway 2 secondhand Z 6 4000 4001 ALCO 1937 Ex SP amp S 903 904 sold back to SP amp S March 1950 and July 1946 respectively Scrapped between 1953 and 1957Northern Pacific Railway 47 Z 6 5100 5120 ALCO 1936 1937 Scrapped between 1950 and 1953Z 7 5121 5126 ALCO 1941 Scrapped between 1951 and 1954Z 8 5130 5149 ALCO 1943 1944 Scrapped between 1952 and 1957Spokane Portland and Seattle Railway 8 Z 6 900 905 ALCO 1937 Identical to NP Z 6 class 903 904 sold to GN January 1940 purchased back March 1950 and July 1946 respectivelyZ 8 910 911 ALCO 1944 Identical to NP Z 8 classUnion Pacific Railroad 105 CSA 1 3900 3914 ALCO 1936 To UP 3800 3814 Scrapped between 1957 and 1958CSA 2 3915 3939 ALCO 1937 To UP 3815 3839 Scrapped 19584664 3 3950 3969 ALCO 1942 Scrapped between 1958 and 19594664 4 3975 3999 ALCO 1943 No 3977 and 3985 are preserved 4664 5 3930 3949 ALCO 1944 Scrapped between 1957 and 1959Western Maryland Railway 12 M 2 1201 1212 Baldwin 1940 1941 These and the 15 units for the D amp RGW were the only ones of this type made by Baldwin Scrapped 1958Western Pacific Railroad 7 M 100 401 407 ALCO 1938 Scrapped between 1953 and 1959References Edit Union Pacific 4 6 6 4 Challenger Locomotives in the USA www steamlocomotive com Retrieved 2019 05 08 Keefe Kevin The Challenger at high tide Classic Trains Work begins on Union Pacific Challenger No 3985 Trains Retrieved 2023 01 07 Railroading Heritage of Midwest America official website Railroading Heritage of Midwest America Archived from the original on April 28 2022 Retrieved June 12 2022 Glischinski Steve April 28 2022 Railroading Heritage of Midwest America Union Pacific agree to donation of Challenger other locomotives cars Trains Kalmbach Media Archived from the original on April 28 2022 Retrieved June 12 2022 External links EditThe Challenger Type Locomotive The Union Pacific Challenger Roster Web Site of ToyTrains1 4 6 6 4 Challenger Steam Locomotives This steam locomotive related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 4 6 6 4 amp oldid 1139011070, wikipedia, wiki, book, books, library,
