984:, coal supplies were limited by a series of strikes. To safeguard operations, UP converted the 800s to burn oil, and fitted a 6,000-US-gallon (23,000 L; 5,000 imp gal) tank 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 said, "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."
40:
1187:
1267:
964:
1036:
1109:
971:
Dubbed FEF-2, the second batch of 15 was delivered in 1939. Their improvements included larger cylinders, better tractive effort, smoke deflectors on the sides of the smokebox, and driving wheels that were three inches wider in diameter. The biggest change was the replacement of the 12-wheeled tender
954:
to the leading coupled wheels eased the negotiation of curves. UP resisted most of the complicated accessories on many other locomotives, resulting in an elegant, uncluttered appearance. Despite frequently running faster than 100 mph (161 km/h), the forces and stresses on the coupling and
795:
that were the mainstay of 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 as the train was waiting for rescue, a telegram was sent to
992:
Four FEF series locomotives survive. No. 814 (FEF-1) and No. 833 (FEF-2) are on static display. No. 844 (FEF-3) has remained operational and is used in excursion service. No. 838 (FEF-3) is used solely as a source of spare parts for No. 844.
800:
in
Schenectady seeking something better. The result was the FEF series, a superb class of locomotives that could run at 100 mph and produce between 4,000 and 5,000 drawbar horsepower. They would run about 14,000 miles a month.
972:
with a 14-wheeled "pedestal" or "centipede" tender. FEF-2, UP 833 has been tied to claims to have hit the classes' max speed of 120 mph; but was not officially recorded due to the speed violating Union
Pacific's corporate rules.
724:
The final steam locomotives built for the Union
Pacific, the FEFs represented the apex of dual-service steam locomotive development in the United States, as funds and research were thereafter concentrated into the development of
2452:
139:
2485:
1461:
757:, until diesel-electric locomotives took over passenger service. Many FEF series locomotives were reassigned to freight service during the last years of their careers.
2626:
2621:
1131:
1289:
1209:
2616:
2447:
721:
until 1959. Like other Union
Pacific steam classes, the acronym comes from the first letter of the spelling of its wheel arrangement: Four Eight Four.
1058:
955:
connecting rods were kept within acceptable limits. There were many reports of the class reaching the design limit of 110 mph (177 km/h).
2478:
1626:
1578:
1503:
1546:
1527:
2471:
1372:
1555:
39:
2578:
2566:
2554:
1959:
753:
726:
1446:
943:
797:
714:
384:
77:
2606:
1969:
1120:
2611:
1619:
1047:
980:
Except for the use of some substitute materials, the final batch of 10 were nearly identical to the FEF-2. After
947:
1952:
1347:
2499:
2348:
2280:
2151:
2040:
1395:
See
Edmonson, Harold A. and Goodheart, David. "Union Pacific's 8444," at 1 (1989, Goodheart Publications).
1278:
1198:
946:
in 1937. As a whole, they followed the simplest possible arrangement of two outside cylinders, as had the
773:
718:
572:
2463:
2442:
2428:
1352:
951:
747:
479:
469:
1604:
1421:
2338:
2331:
2326:
2319:
2314:
2309:
2288:
1612:
1171:
1051:
1186:
741:
1266:
2528:
2423:
2352:
2284:
2053:
2044:
1754:
579:
538:
2546:
2515:
2418:
2405:
2155:
1974:
1593:
1574:
1542:
1523:
1282:
1260:
1249:
1202:
924:
769:
761:
680:
656:
44:
1487:
2507:
2048:
1332:
780:
710:
2413:
1507:
1500:
963:
928:
809:
The FEF series consisted of three classes of steam locomotives: FEF-1, FEF-2, and FEF-3.
765:
684:
520:
238:
1407:
Union
Pacific: The Reconfiguration: America's Greatest Railroad from 1969 to the Present
17:
1635:
735:
126:
2600:
1329:
777:
388:
180:
2141:
2136:
2131:
2126:
2121:
2114:
2109:
2104:
2099:
2094:
2089:
2084:
2077:
2072:
2067:
2062:
981:
1124:
149:
776:'s oldest serving locomotives and the only steam locomotive never retired by a
2495:
497:
1305:
1291:
1225:
1211:
1147:
1133:
1074:
1060:
2302:
2297:
2270:
199:
1709:
1998:
791:
In the late 1930s, rising trainloads started to exceed the limits of the
730:
312:
1035:
2534:
2263:
2258:
2253:
2248:
2243:
2238:
2233:
2226:
2221:
2216:
2211:
2206:
2201:
2196:
2191:
2186:
2179:
2174:
2169:
2164:
2030:
2025:
2020:
2015:
2010:
2003:
1993:
1988:
1983:
1947:
1597:
2583:
2571:
2559:
2390:
2361:
1942:
1937:
1932:
1925:
1920:
1915:
1910:
1905:
1900:
1895:
1838:
1806:
1786:
1744:
1739:
1724:
1719:
1684:
1669:
48:
2521:
2395:
2383:
2378:
2373:
2366:
1888:
1883:
1878:
1873:
1868:
1863:
1858:
1853:
1848:
1843:
1833:
1828:
1821:
1816:
1811:
1801:
1796:
1791:
1781:
1776:
1771:
1764:
1759:
1749:
1734:
1729:
1714:
1704:
1696:
1689:
1679:
1674:
1664:
1659:
1654:
1649:
1108:
962:
792:
729:
locomotives. Designed to burn coal, they were converted to run on
706:
702:
331:
6,000 US gal (22,712.5 litres; 4,996.0 imperial gallons)
131:
339:
20,000 US gal (76,000 L; 17,000 imp gal)
733:
in 1946. They pulled a variety of passenger trains, such as the
487:
24.5 in × 32 in (622 mm × 813 mm),
307:
2467:
1608:
967:
FEF-2 #825 in a 1943 Union
Pacific World War II publicity photo
1571:
Building Union
Pacific 844: The Birth of the FEF-3 Steam Class
942:
The first 20 locomotives, numbered 800–819, were delivered by
492:
25 in × 32 in (635 mm × 813 mm)
1447:"Union Pacific 4-8-4 "Northern" Locomotives in the USA"
1373:"Union Pacific 4-8-4 "Northern" Locomotives in the USA"
764:, which remains in operational condition and runs in
1636:
Steam locomotive wheel arrangements (Whyte notation)
2545:
2506:
2404:
2347:
2279:
2150:
2039:
1968:
1642:
663:
638:
630:
609:
588:
578:
568:
563:
537:
519:
514:
496:
478:
468:
460:
444:
435:
427:
419:
411:
403:
395:
379:
359:
351:
343:
335:
319:
303:
282:
261:
236:
211:
198:
179:
148:
137:
124:
115:
110:
92:
84:
73:
65:
60:
32:
931:since 1960; renumbered to 8444 from 1962 to 1989.
1539:The Illustrated Dictionary of Trains of the World
1409:. New York: Oxford University Press. p. 163.
717:(ALCO) between 1937 and 1944 and operated by the
760:Four FEF series locomotives survive, including
1556:Union Pacific Northerns at steamlocomotive.com
950:locomotives 108 years earlier. Fitting ALCO's
2479:
1620:
1518:Hollingsworth, Brian; Arthur F. Cook (1996).
1328:The only steam locomotive never retired by a
687:, No. 838 in storage as source of spare parts
8:
27:Three classes of American 4-8-4 locomotives
2486:
2472:
2464:
1627:
1613:
1605:
560:
511:
107:
57:
1488:"UP 1915 Steam Locomotive Roster, Part 4"
1170:Originally on display at Pioneer Park in
1592:(1st ed.). Kratville Publications.
995:
811:
1364:
2627:Railway locomotives introduced in 1937
2622:Steam locomotives of the United States
29:
659:and 838 preserved, remainder scrapped
650:No. 833 preserved, remainder scrapped
645:No. 814 preserved, remainder scrapped
7:
1573:(1st ed.). South Platte Press.
923:Converted to oil fuel in 1945–1946.
897:Converted to oil fuel in 1945–1946.
871:Converted to oil fuel in 1945–1946.
431:4,224 sq ft (392.4 m)
423:1,578 sq ft (146.6 m)
415:2,204 sq ft (204.8 m)
373: in (2189.2 mm) diameter
207:98 ft 5 in (30.00 m)
2617:Union Pacific Railroad locomotives
464:1,400 sq ft (130 m)
25:
634:1958-1959 (but 844 never retired)
407:442 sq ft (41.1 m)
1541:. London: Salamander Books Ltd.
1265:
1185:
1107:
1034:
528:63,611 lbf (283.0 kN),
375:100 in (2,540 mm) (OD)
355:100 sq ft (9.3 m)
38:
1462:"Union Pacific Locomotive #833"
1420:Union Pacific Railroad (2012).
533:63,800 lbf (283.8 kN)
294:894,960 lb (405.9 tonnes),
289:830,150 lb (376.5 tonnes),
273:478,640 lb (217.1 tonnes),
268:465,000 lb (210.9 tonnes),
252:265,520 lb (120.4 tonnes),
247:270,000 lb (122.5 tonnes),
47:running through Painted Rocks,
1588:Kratville, William W. (1967).
1306:41.129703000°N 104.813658000°W
1226:41.129703000°N 104.813658000°W
299:907,890 lb (411.8 tonnes)
278:486,340 lb (220.6 tonnes)
257:270,300 lb (122.6 tonnes)
1:
1537:Hollingsworth, Brian (2000).
326:50,000 lb (22.7 tonnes),
1311:41.129703000; -104.813658000
1231:41.129703000; -104.813658000
908:American Locomotive Company
882:American Locomotive Company
856:American Locomotive Company
813:Table of orders and numbers
715:American Locomotive Company
189:77 in (1,956 mm),
78:American Locomotive Company
2643:
1506:September 6, 2011, at the
1248:Source of spare parts for
1121:Utah State Railroad Museum
997:Surviving FEF locomotives
922:
901:
896:
875:
870:
849:
428: • Total surface
194:80 in (2,032 mm)
2437:
1501:UP historical locomotives
1048:RailsWest Railroad Museum
1022:
1019:
1016:
1013:
1010:
1007:
1004:
1001:
559:
510:
461: • Heating area
106:
56:
37:
1558:maintained by Wes Barris
1522:. Salamander Books Ltd.
1520:The Great Book of Trains
1468:. Weber State University
1348:Union Pacific Challenger
699:Union Pacific FEF series
33:Union Pacific FEF series
18:Union Pacific FEF Series
2349:Articulated locomotives
2339:2-4-4-2+2-8-8-2+2-4-4-2
2281:Articulated locomotives
2152:Articulated locomotives
2041:Articulated locomotives
1422:"Living Legend No. 844"
1377:www.steamlocomotive.com
584:FEF-1, FEF-2, and FEF-3
352: • Grate area
232: in (34.81 m)
2441:Other notation forms:
1569:Bush, John E. (2013).
1279:Union Pacific Railroad
1199:Union Pacific Railroad
1148:41.22083°N 111.97972°W
968:
952:lateral motion devices
719:Union Pacific Railroad
573:Union Pacific Railroad
2315:0-6-2+2-4-2-4-2+2-6-0
1405:Klein, Maury (2011).
1353:Union Pacific Big Boy
1075:41.24778°N 95.85278°W
966:
51:on September 15, 2009
1460:Witten, Lee (2014).
1172:Salt Lake City, Utah
1153:41.22083; -111.97972
1052:Council Bluffs, Iowa
404: • Firebox
2494:Historic/preserved
1643:Single engine types
1301: /
1221: /
1143: /
1080:41.24778; -95.85278
1070: /
998:
814:
742:Los Angeles Limited
515:Performance figures
2547:Diesel locomotives
2406:Geared locomotives
2332:2-10-10-10-10-10-2
996:
988:Surviving examples
969:
812:
675:No. 833 on display
670:No. 814 on display
420: • Flues
412: • Tubes
216:Loco & tender:
205:Loco & tender:
2607:4-8-4 locomotives
2594:
2593:
2587:
2575:
2563:
2538:
2525:
2508:Steam locomotives
2461:
2460:
1580:978-0-942035-98-8
1466:digital.weber.edu
1339:
1338:
1283:Cheyenne, Wyoming
1203:Cheyenne, Wyoming
935:
934:
929:excursion service
766:excursion service
711:steam locomotives
695:
694:
691:
690:
685:excursion service
555:
554:
506:
505:
445: • Type
315:from 1946 onwards
310:from 1937 to 1946
102:
101:
45:Union Pacific 844
16:(Redirected from
2634:
2612:ALCO locomotives
2581:
2569:
2557:
2532:
2519:
2518:"Living Legend"
2488:
2481:
2474:
2465:
1629:
1622:
1615:
1606:
1601:
1584:
1552:
1533:
1510:
1498:
1492:
1491:
1484:
1478:
1477:
1475:
1473:
1457:
1451:
1450:
1443:
1437:
1436:
1434:
1432:
1417:
1411:
1410:
1402:
1396:
1393:
1387:
1386:
1384:
1383:
1369:
1333:Class I railroad
1325:
1324:
1322:
1321:
1320:
1318:
1313:
1312:
1307:
1302:
1299:
1298:
1297:
1296:104°48′49.1688″W
1294:
1269:
1245:
1244:
1242:
1241:
1240:
1238:
1233:
1232:
1227:
1222:
1219:
1218:
1217:
1216:104°48′49.1688″W
1214:
1189:
1167:
1166:
1164:
1163:
1162:
1160:
1155:
1154:
1149:
1144:
1141:
1140:
1139:
1136:
1111:
1094:
1093:
1091:
1090:
1089:
1087:
1082:
1081:
1076:
1071:
1068:
1067:
1066:
1063:
1038:
999:
815:
781:Class I railroad
736:Overland Limited
561:
512:
396:Heating surface:
372:
371:
367:
241:
231:
230:
226:
223:
174:
170:
168:
167:
163:
160:
108:
95:
58:
42:
30:
21:
2642:
2641:
2637:
2636:
2635:
2633:
2632:
2631:
2597:
2596:
2595:
2590:
2541:
2502:
2492:
2462:
2457:
2433:
2400:
2351:
2343:
2320:2-6-6-2+2-6-6-2
2283:
2275:
2154:
2146:
2051:
2043:
2035:
1973:
1964:
1638:
1633:
1587:
1581:
1568:
1565:
1563:Further reading
1549:
1536:
1530:
1517:
1514:
1513:
1508:Wayback Machine
1499:
1495:
1486:
1485:
1481:
1471:
1469:
1459:
1458:
1454:
1445:
1444:
1440:
1430:
1428:
1419:
1418:
1414:
1404:
1403:
1399:
1394:
1390:
1381:
1379:
1371:
1370:
1366:
1361:
1344:
1316:
1314:
1310:
1308:
1304:
1303:
1300:
1295:
1292:
1290:
1288:
1287:
1236:
1234:
1230:
1228:
1224:
1223:
1220:
1215:
1212:
1210:
1208:
1207:
1158:
1156:
1152:
1150:
1146:
1145:
1142:
1137:
1134:
1132:
1130:
1129:
1085:
1083:
1079:
1077:
1073:
1072:
1069:
1064:
1061:
1059:
1057:
1056:
1041:September 1937
990:
978:
961:
940:
807:
789:
727:diesel-electric
701:consists of 45
683:operational in
676:
671:
651:
646:
622:
617:
601:
596:
547:
529:
521:Tractive effort
488:
452:
437:
380:Boiler pressure
374:
369:
365:
364:
327:
311:
295:
290:
274:
269:
253:
248:
239:Adhesive weight
237:
228:
224:
221:
219:
190:
172:
165:
161:
158:
156:
155:4 ft
154:
117:
93:
61:Type and origin
52:
28:
23:
22:
15:
12:
11:
5:
2640:
2638:
2630:
2629:
2624:
2619:
2614:
2609:
2599:
2598:
2592:
2591:
2589:
2588:
2576:
2564:
2551:
2549:
2543:
2542:
2540:
2539:
2526:
2512:
2510:
2504:
2503:
2493:
2491:
2490:
2483:
2476:
2468:
2459:
2458:
2456:
2455:
2450:
2445:
2438:
2435:
2434:
2432:
2431:
2426:
2421:
2416:
2410:
2408:
2402:
2401:
2399:
2398:
2393:
2387:
2386:
2381:
2376:
2370:
2369:
2364:
2358:
2356:
2345:
2344:
2342:
2341:
2335:
2334:
2329:
2323:
2322:
2317:
2312:
2306:
2305:
2300:
2294:
2292:
2277:
2276:
2274:
2273:
2267:
2266:
2261:
2256:
2251:
2246:
2241:
2236:
2230:
2229:
2224:
2219:
2214:
2209:
2204:
2199:
2194:
2189:
2183:
2182:
2177:
2172:
2167:
2161:
2159:
2148:
2147:
2145:
2144:
2139:
2134:
2129:
2124:
2118:
2117:
2112:
2107:
2102:
2097:
2092:
2087:
2081:
2080:
2075:
2070:
2065:
2059:
2057:
2037:
2036:
2034:
2033:
2028:
2023:
2018:
2013:
2007:
2006:
2001:
1996:
1991:
1986:
1980:
1978:
1966:
1965:
1963:
1962:
1956:
1955:
1950:
1945:
1940:
1935:
1929:
1928:
1923:
1918:
1913:
1908:
1903:
1898:
1892:
1891:
1886:
1881:
1876:
1871:
1866:
1861:
1856:
1851:
1846:
1841:
1836:
1831:
1825:
1824:
1819:
1814:
1809:
1804:
1799:
1794:
1789:
1784:
1779:
1774:
1768:
1767:
1762:
1757:
1752:
1747:
1742:
1737:
1732:
1727:
1722:
1717:
1712:
1707:
1701:
1700:
1693:
1692:
1687:
1682:
1677:
1672:
1667:
1662:
1657:
1652:
1646:
1644:
1640:
1639:
1634:
1632:
1631:
1624:
1617:
1609:
1603:
1602:
1590:The Mighty 800
1585:
1579:
1564:
1561:
1560:
1559:
1553:
1547:
1534:
1528:
1512:
1511:
1493:
1479:
1452:
1438:
1412:
1397:
1388:
1363:
1362:
1360:
1357:
1356:
1355:
1350:
1343:
1340:
1337:
1336:
1330:North American
1326:
1293:41°7′46.9308″N
1285:
1276:
1273:
1272:December 1944
1270:
1263:
1258:
1254:
1253:
1246:
1213:41°7′46.9308″N
1205:
1196:
1193:
1192:December 1944
1190:
1183:
1180:
1176:
1175:
1168:
1127:
1118:
1115:
1112:
1105:
1102:
1098:
1097:
1095:
1054:
1045:
1042:
1039:
1032:
1029:
1025:
1024:
1021:
1018:
1015:
1014:Serial number
1012:
1009:
1006:
1003:
989:
986:
977:
974:
960:
957:
939:
936:
933:
932:
921:
918:
915:
912:
909:
906:
903:
899:
898:
895:
892:
889:
886:
883:
880:
877:
873:
872:
869:
866:
863:
860:
857:
854:
851:
847:
846:
843:
840:
837:
834:
825:
822:
819:
806:
803:
788:
785:
778:North American
772:is one of the
693:
692:
689:
688:
665:
661:
660:
640:
636:
635:
632:
628:
627:
611:
607:
606:
590:
586:
585:
582:
576:
575:
570:
566:
565:
557:
556:
553:
552:
541:
539:Factor of adh.
535:
534:
523:
517:
516:
508:
507:
504:
503:
500:
494:
493:
482:
476:
475:
472:
466:
465:
462:
458:
457:
446:
442:
441:
438:
433:
432:
429:
425:
424:
421:
417:
416:
413:
409:
408:
405:
401:
400:
397:
393:
392:
381:
377:
376:
361:
357:
356:
353:
349:
348:
345:
341:
340:
337:
333:
332:
321:
317:
316:
313:No. 5 fuel oil
305:
301:
300:
284:
280:
279:
263:
259:
258:
242:
234:
233:
213:
209:
208:
202:
196:
195:
184:
177:
176:
152:
146:
145:
142:
135:
134:
129:
122:
121:
118:
116:Configuration:
113:
112:
111:Specifications
104:
103:
100:
99:
96:
94:Total produced
90:
89:
86:
82:
81:
75:
71:
70:
67:
63:
62:
54:
53:
43:
35:
34:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2639:
2628:
2625:
2623:
2620:
2618:
2615:
2613:
2610:
2608:
2605:
2604:
2602:
2585:
2580:
2577:
2573:
2568:
2565:
2561:
2556:
2553:
2552:
2550:
2548:
2544:
2536:
2530:
2527:
2523:
2517:
2514:
2513:
2511:
2509:
2505:
2501:
2500:Union Pacific
2497:
2489:
2484:
2482:
2477:
2475:
2470:
2469:
2466:
2454:
2451:
2449:
2446:
2444:
2440:
2439:
2436:
2430:
2427:
2425:
2422:
2420:
2417:
2415:
2412:
2411:
2409:
2407:
2403:
2397:
2394:
2392:
2389:
2388:
2385:
2382:
2380:
2377:
2375:
2372:
2371:
2368:
2365:
2363:
2360:
2359:
2357:
2354:
2350:
2346:
2340:
2337:
2336:
2333:
2330:
2328:
2327:2-8-8-8-8-8-2
2325:
2324:
2321:
2318:
2316:
2313:
2311:
2308:
2307:
2304:
2301:
2299:
2296:
2295:
2293:
2290:
2286:
2282:
2278:
2272:
2269:
2268:
2265:
2262:
2260:
2257:
2255:
2252:
2250:
2247:
2245:
2242:
2240:
2237:
2235:
2232:
2231:
2228:
2225:
2223:
2220:
2218:
2215:
2213:
2210:
2208:
2205:
2203:
2200:
2198:
2195:
2193:
2190:
2188:
2185:
2184:
2181:
2178:
2176:
2173:
2171:
2168:
2166:
2163:
2162:
2160:
2157:
2153:
2149:
2143:
2140:
2138:
2135:
2133:
2130:
2128:
2125:
2123:
2120:
2119:
2116:
2113:
2111:
2108:
2106:
2103:
2101:
2098:
2096:
2093:
2091:
2088:
2086:
2083:
2082:
2079:
2076:
2074:
2071:
2069:
2066:
2064:
2061:
2060:
2058:
2055:
2050:
2046:
2042:
2038:
2032:
2029:
2027:
2024:
2022:
2019:
2017:
2014:
2012:
2009:
2008:
2005:
2002:
2000:
1997:
1995:
1992:
1990:
1987:
1985:
1982:
1981:
1979:
1976:
1971:
1970:Divided drive
1967:
1961:
1958:
1957:
1954:
1951:
1949:
1946:
1944:
1941:
1939:
1936:
1934:
1931:
1930:
1927:
1924:
1922:
1919:
1917:
1914:
1912:
1909:
1907:
1904:
1902:
1899:
1897:
1894:
1893:
1890:
1887:
1885:
1882:
1880:
1877:
1875:
1872:
1870:
1867:
1865:
1862:
1860:
1857:
1855:
1852:
1850:
1847:
1845:
1842:
1840:
1837:
1835:
1832:
1830:
1827:
1826:
1823:
1820:
1818:
1815:
1813:
1810:
1808:
1805:
1803:
1800:
1798:
1795:
1793:
1790:
1788:
1785:
1783:
1780:
1778:
1775:
1773:
1770:
1769:
1766:
1763:
1761:
1758:
1756:
1753:
1751:
1748:
1746:
1743:
1741:
1738:
1736:
1733:
1731:
1728:
1726:
1723:
1721:
1718:
1716:
1713:
1711:
1708:
1706:
1703:
1702:
1698:
1695:
1694:
1691:
1688:
1686:
1683:
1681:
1678:
1676:
1673:
1671:
1668:
1666:
1663:
1661:
1658:
1656:
1653:
1651:
1648:
1647:
1645:
1641:
1637:
1630:
1625:
1623:
1618:
1616:
1611:
1610:
1607:
1599:
1595:
1591:
1586:
1582:
1576:
1572:
1567:
1566:
1562:
1557:
1554:
1550:
1548:1-84065-177-6
1544:
1540:
1535:
1531:
1529:0-517-18462-1
1525:
1521:
1516:
1515:
1509:
1505:
1502:
1497:
1494:
1489:
1483:
1480:
1467:
1463:
1456:
1453:
1448:
1442:
1439:
1427:
1423:
1416:
1413:
1408:
1401:
1398:
1392:
1389:
1378:
1374:
1368:
1365:
1358:
1354:
1351:
1349:
1346:
1345:
1341:
1334:
1331:
1327:
1323:
1286:
1284:
1280:
1277:
1274:
1271:
1268:
1264:
1262:
1259:
1256:
1255:
1251:
1247:
1243:
1206:
1204:
1200:
1197:
1194:
1191:
1188:
1184:
1181:
1178:
1177:
1173:
1169:
1165:
1128:
1126:
1122:
1119:
1116:
1114:October 1939
1113:
1110:
1106:
1103:
1100:
1099:
1096:
1092:
1055:
1053:
1049:
1046:
1043:
1040:
1037:
1033:
1030:
1027:
1026:
1000:
994:
987:
985:
983:
975:
973:
965:
958:
956:
953:
949:
945:
937:
930:
926:
919:
916:
913:
910:
907:
904:
900:
893:
890:
887:
884:
881:
878:
874:
867:
864:
861:
858:
855:
852:
848:
844:
841:
838:
835:
833:
830:
826:
824:Manufacturer
823:
820:
817:
816:
810:
804:
802:
799:
794:
786:
784:
782:
779:
775:
774:Union Pacific
771:
767:
763:
758:
756:
755:
750:
749:
748:Portland Rose
744:
743:
738:
737:
732:
728:
722:
720:
716:
713:built by the
712:
708:
704:
700:
686:
682:
679:
674:
669:
666:
662:
658:
654:
649:
644:
641:
637:
633:
629:
625:
620:
615:
612:
608:
604:
599:
594:
591:
587:
583:
581:
577:
574:
571:
567:
562:
558:
550:
545:
542:
540:
536:
532:
527:
524:
522:
518:
513:
509:
501:
499:
495:
491:
486:
483:
481:
480:Cylinder size
477:
473:
471:
467:
463:
459:
455:
450:
447:
443:
439:
434:
430:
426:
422:
418:
414:
410:
406:
402:
398:
394:
390:
386:
382:
378:
362:
358:
354:
350:
346:
342:
338:
334:
330:
325:
322:
320:Fuel capacity
318:
314:
309:
306:
302:
298:
293:
288:
285:
281:
277:
272:
267:
264:
260:
256:
251:
246:
243:
240:
235:
217:
214:
210:
206:
203:
201:
197:
193:
188:
185:
182:
178:
173:1,435 mm
153:
151:
147:
143:
141:
138: •
136:
133:
130:
128:
125: •
123:
119:
114:
109:
105:
97:
91:
87:
83:
79:
76:
72:
68:
64:
59:
55:
50:
46:
41:
36:
31:
19:
1977:engine types
1589:
1570:
1538:
1519:
1496:
1482:
1470:. Retrieved
1465:
1455:
1441:
1431:February 16,
1429:. Retrieved
1425:
1415:
1406:
1400:
1391:
1380:. Retrieved
1376:
1367:
1020:Coordinates
991:
982:World War II
979:
970:
948:Northumbrian
941:
914:72782-72791
888:69161-69175
862:68808-68827
836:Serial Nos.
831:
828:
808:
790:
759:
752:
746:
740:
734:
723:
698:
696:
677:
672:
667:
652:
647:
642:
623:
618:
613:
602:
597:
592:
548:
543:
530:
525:
489:
484:
453:
448:
436:Superheater:
328:
323:
296:
291:
286:
283:Total weight
275:
270:
265:
254:
249:
244:
218:114 ft
215:
204:
191:
186:
2496:locomotives
2310:2-8-8-8-8-2
2142:4-8-4+4-8-4
2137:4-8-2+2-8-4
2132:4-8-0+0-8-4
2127:2-8-2+2-8-2
2122:2-8-0+0-8-2
2115:4-6-4+4-6-4
2110:4-6-2+2-6-4
2105:4-6-0+0-6-4
2100:2-6-2+2-6-2
2095:2-6-0+0-6-2
2090:0-6-2+2-6-0
2085:0-6-0+0-6-0
2078:4-4-2+2-4-4
2073:2-4-2+2-4-2
2068:2-4-0+0-4-2
2063:0-4-0+0-4-0
1309: /
1229: /
1151: /
1138:111°58′47″W
1125:Ogden, Utah
1078: /
1011:Date built
839:Year built
664:Disposition
502:Walschaerts
387:(2.07
262:Loco weight
2601:Categories
2531:"Big Boy"
2429:Willamette
2287:and other
1699:(monorail)
1598:B0007EME4Y
1382:2019-06-05
1359:References
1315: (
1235: (
1157: (
1135:41°13′15″N
1084: (
1065:95°51′10″W
1062:41°14′52″N
754:Challenger
498:Valve gear
336:Water cap.
85:Build date
66:Power type
2498:owned by
2303:2-8-8-8-4
2298:2-8-8-8-2
2289:Multiplex
2271:2-10-10-2
1317:FEF-3 838
1237:FEF-3 838
1159:FEF-2 833
1086:FEF-1 814
1017:Location
821:Quantity
639:Preserved
610:Delivered
569:Operators
470:Cylinders
383:300
304:Fuel type
200:Wheelbase
144:2′D2′ h2s
88:1937–1944
1999:2-2-4-0T
1504:Archived
1342:See also
920:835–844
894:820–834
868:800–819
731:fuel oil
707:Northern
600:820–834,
595:800–819,
544:FEF-1/3:
531:FEF-2/3:
490:FEF-2/3:
449:FEF-1/3:
440:
399:
363:86
347:
344:Firebox:
192:FEF-2/3:
169: in
120:
2535:4-8-8-4
2424:Heisler
2384:0-6-4-0
2353:Engerth
2285:Triplex
2264:4-8-8-4
2259:4-8-8-2
2254:2-8-8-4
2249:2-8-8-2
2244:2-8-8-0
2239:0-8-8-0
2234:0-8-6-0
2227:4-6-6-4
2222:4-6-6-2
2217:4-4-6-2
2212:2-6-8-0
2207:2-6-6-6
2202:2-6-6-4
2197:2-6-6-2
2192:2-6-6-0
2187:0-6-6-0
2180:2-4-4-2
2175:2-4-4-0
2170:0-4-4-2
2165:0-4-4-0
2054:Garratt
2045:Fairlie
2031:4-6-4-4
2026:4-4-6-4
2021:6-4-4-6
2016:4-4-4-4
2011:2-4-6-2
2004:4-2-2-0
1994:2-2-2-2
1989:2-2-2-0
1984:0-2-2-0
1710:0-4-0+4
1005:Number
925:No. 844
911:S-1937
885:S-1811
859:S-1769
842:UP No.
787:Origins
762:No. 844
681:No. 844
631:Retired
605:835–844
589:Numbers
451:Type A
368:⁄
227:⁄
164:⁄
74:Builder
2419:Climax
2156:Mallet
1975:Duplex
1960:4-14-4
1953:4-12-2
1948:2-12-4
1943:2-12-2
1938:2-12-0
1933:0-12-0
1926:4-10-2
1921:4-10-0
1916:2-10-4
1911:2-10-2
1906:2-10-0
1901:0-10-2
1896:0-10-0
1839:0-8-4T
1807:2-6-6T
1787:0-6-6T
1745:2-4-6T
1740:2-4-4T
1725:0-4-6T
1720:0-4-4T
1685:4-2-4T
1670:2-2-4T
1596:
1577:
1545:
1526:
1472:May 7,
1426:UP.com
1275:72791
1257:FEF-3
1195:72785
1179:FEF-3
1117:69174
1101:FEF-2
1044:68822
1028:FEF-1
1023:Notes
1008:Image
902:FEF-3
876:FEF-2
850:FEF-1
845:Notes
829:Order
818:Class
805:Models
793:4-8-2s
768:. The
678:FEF-3:
673:FEF-2:
668:FEF-1:
653:FEF-3:
648:FEF-2:
643:FEF-1:
624:FEF-3:
619:FEF-2:
614:FEF-1:
603:FEF-3:
598:FEF-2:
593:FEF-1:
564:Career
549:FEF-2:
526:FEF-1:
485:FEF-1:
456:Type E
454:FEF-2:
385:lbf/in
360:Boiler
297:FEF-3:
292:FEF-2:
287:FEF-1:
276:FEF-3:
271:FEF-2:
266:FEF-1:
255:FEF-3:
250:FEF-2:
245:FEF-1:
212:Length
187:FEF-1:
181:Driver
80:(ALCO)
49:Nevada
2522:4-8-4
2448:Swiss
2396:0-8-6
2391:0-8-4
2379:0-6-4
2374:2-6-4
2367:0-4-6
2362:0-4-4
2355:types
2291:types
2158:types
2056:types
2049:Meyer
1889:6-8-6
1884:4-8-6
1879:4-8-4
1874:4-8-2
1869:4-8-0
1864:2-8-6
1859:2-8-4
1854:2-8-2
1849:2-8-0
1844:0-8-6
1834:0-8-2
1829:0-8-0
1822:4-6-4
1817:4-6-2
1812:4-6-0
1802:2-6-4
1797:2-6-2
1792:2-6-0
1782:0-6-4
1777:0-6-2
1772:0-6-0
1765:4-4-6
1760:4-4-4
1755:4-4-2
1750:4-4-0
1735:2-4-2
1730:2-4-0
1715:0-4-2
1705:0-4-0
1697:0-3-0
1690:6-2-0
1680:4-2-2
1675:4-2-0
1665:2-2-2
1660:2-2-0
1655:0-2-4
1650:0-2-2
1002:Type
976:FEF-3
959:FEF-2
938:FEF-1
917:1944
891:1939
865:1937
827:Alco
703:4-8-4
655:Nos.
621:1939,
616:1937,
580:Class
324:Coal:
150:Gauge
132:4-8-4
127:Whyte
69:Steam
2579:963B
2529:4014
2414:Shay
2052:and
1972:and
1594:ASIN
1575:ISBN
1543:ISBN
1524:ISBN
1474:2024
1433:2014
1182:838
1104:833
1031:814
944:ALCO
832:No.
798:ALCO
751:and
697:The
626:1944
551:4.17
546:4.24
329:Oil:
308:Coal
183:dia.
2584:E9B
2572:E9A
2567:951
2560:E9A
2555:949
2516:844
2453:UIC
2443:AAR
1261:844
1250:844
927:in
905:10
879:15
853:20
770:844
657:844
474:Two
389:MPa
140:UIC
2603::
2047:,
1464:.
1424:.
1375:.
1335:.
1281:,
1252:.
1201:,
1174:.
1123:,
1050:,
783:.
745:,
739:,
709:"
370:16
98:45
2586:)
2582:(
2574:)
2570:(
2562:)
2558:(
2537:)
2533:(
2524:)
2520:(
2487:e
2480:t
2473:v
1628:e
1621:t
1614:v
1600:.
1583:.
1551:.
1532:.
1490:.
1476:.
1449:.
1435:.
1385:.
1319:)
1239:)
1161:)
1088:)
705:"
391:)
366:3
229:8
225:5
222:+
220:2
175:)
171:(
166:2
162:1
159:+
157:8
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
