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2-6-6-6

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One H-8, the 1642, suffered a crown sheet failure and subsequent boiler explosion at Hinton, West Virginia, in June 1953. The force of the explosion rocketed the boiler off the running gear towards the rear, killing all three crew. While these locomotives had two sources of water for the boiler, a
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hot pump and one injector, it is not known whether any were defective at the time of dispatch. According to the family of the locomotive's engineer, Wilbur H. Anderson, of Hinton, previous crews had complained of a faulty water level gauge. Anderson's widow, Georgia Anderson, was given $ 10,000 in
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driven steam locomotives might soon be replaced by diesel power, Lima and C&O set out to build the ultimate in high power steam locomotives and they succeeded. No diesel engine ever surpassed the output of these giants, which were among the heaviest steam locomotives ever constructed. The
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indicating momentary readings of 7,498 hp (5.6 MW) with readings between 6,700 to 6,900 hp (5.0 to 5.1 MW) at about 45 mph (72 km/h). The state of calibration of the dynamometer car is not known. The calculated starting tractive effort was only 110,200 lbf
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recalculated the weight, and discovered that the H-8s weighed 771,300 pounds, which was thousands of pounds heavier than Lima first claimed. The train crews that worked with the H-8s, who were getting paid based on the locomotive's weight on the
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three-axle trailing truck supporting the firebox was unusual, carrying over 190,000 lbs, allowing the huge firebox needed for the high power. As it turned out, steam locomotives continued in service for almost another 20 years.
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in 1945. (The locomotives were Series AG on the Virginian. This was an abbreviation for "Articulated, Series G", not, as is sometimes thought, for "Allegheny".) All were built by the
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Multiple unit operation in the diesel era removed the need to pack the highest horsepower in a single unit. The H-8's 80,000+ pound axle load demanded heavy rail and track structure.
310:. On November 4, 1985, it was partially damaged by a flood, which washed away the ground under it and nearly turned the locomotive over. In 1987, parent company 1350: 1345: 366: 475:. Vol. LXVII #3. Railway Equipment and Publication Company, reprinted by National Model Railroad Association. June 1996 . 524: 288:, where it has been on display indoors since. 1604 was initially sent to C&O's scrap lines behind their diesel shops at 221: 497: 416: 480: 455: 293: 79:
in indicated horsepower), and one of the heaviest at 386 tons for the locomotive itself plus 215 tons for the loaded
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While delivering the first group of locomotives in 1941, Lima miscalculated and misrepresented the H-8s' weight.
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to be displayed as the centerpiece of the then Mount Clare Junction shopping center which was adjacent to the
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The Goldem Age of steam: Trains Unlimited - When Giants Roamed: favorite fragments (original sound)
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There are only two surviving Allegheny locomotives. Upon retirement in 1956, 1601 was donated to
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C&O 1601 "Allegheny Class", on display at The Henry Ford Museum in Dearborn, Michigan
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https://web.archive.org/web/20080127121645/http://www.steamlocomotive.com/allegheny/
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Although it was apparent to many knowledgeable people in the railroad industry that
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The locomotive was built to power coal trains on the 0.57% eastward climb from
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at the time, started seeing this misrepresentation as an attack on their
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beginning in 1941, where it was used to haul loaded coal trains over the
532: 245: 1200: 1195: 1168: 896: 607: 367:"Chesapeake & Ohio 2-6-6-6 "Allegheny" Locomotives in the USA" 1161: 1156: 1151: 1146: 1141: 1136: 1131: 1124: 1119: 1114: 1109: 1099: 1094: 1089: 1084: 1077: 1072: 1067: 1062: 928: 923: 918: 913: 908: 901: 891: 886: 881: 845: 249: 465: 151: 1288: 1259: 840: 835: 830: 823: 818: 813: 808: 803: 798: 793: 736: 704: 684: 642: 637: 622: 617: 582: 567: 59:. The name comes from the locomotive's first service with the 1293: 1281: 1276: 1271: 1264: 786: 781: 776: 771: 766: 761: 756: 751: 746: 741: 731: 726: 719: 714: 709: 699: 694: 689: 679: 674: 669: 662: 657: 647: 632: 627: 612: 602: 594: 587: 577: 572: 562: 557: 552: 547: 51:
Only two classes of the 2-6-6-6 type were built. One was the
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Two classes of 2-6-6-6 locomotives were built: the sixty
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ever built, at 7,500 hp (which was exceeded by only the
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Steam locomotive wheel arrangements (Whyte notation)
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C&O 1604, B&O Railroad Museum, Baltimore, MD
1363: 67:. The other was the "Blue Ridge" class for the 518: 197:. C&O-1601's power output is 7,500 hp. 525: 511: 165:Allegheny - Most Powerful Steam Locomotive 448:Guide to North American Steam Locomotives 252:Lima for over 3 million dollars in 1944. 95:(also known as German classification and 271: 18: 16:Articulated locomotive wheel arrangement 314:did a cosmetic overhaul on it at their 1364: 212:, reports tests of the C&O with a 506: 445: 86:Other equivalent classifications are: 222:White Sulphur Springs, West Virginia 134:for simple articulated locomotives. 473:Official Railway Equipment Register 13: 14: 1393: 491: 294:Virginia Museum of Transportation 175:H-8 "Allegheny" class locomotives 159: 150: 438: 399:from the original on 2021-12-13 306:where it was displayed next to 267: 167:, 1:54, Wanda Kaluza on YouTube 409: 383: 359: 350: 341: 77:Pennsylvania Railroad class Q2 1: 329: 300: 292:. It was then donated to the 264:compensation by the C&O. 7: 179:Chesapeake and Ohio Railway 61:Chesapeake and Ohio Railway 10: 1398: 137: 1335: 1302: 1245: 1177: 1048: 937: 866: 540: 446:Drury, George H. (1993), 158: 149: 144: 356:Drury (1993) pp. 417–419 334: 208:Gene Huddleston's book, 1247:Articulated locomotives 1237:2-4-4-2+2-8-8-2+2-4-4-2 1179:Articulated locomotives 1050:Articulated locomotives 939:Articulated locomotives 371:www.steamlocomotive.com 347:Drury (1993) pp. 83, 88 324:B&O Railroad Museum 259:steam turbine pump-fed 1339:Other notation forms: 318:before it was sent to 277: 110:Turkish classification 97:Italian classification 37:articulated locomotive 24: 1213:0-6-2+2-4-2-4-2+2-6-0 275: 230:Hinton, West Virginia 187:Lima Locomotive Works 102:French classification 57:Lima Locomotive Works 22: 395:, 25 November 2019, 202:reciprocating piston 118:Swiss classification 1377:Freight locomotives 541:Single engine types 226:Alleghany, Virginia 195:Allegheny Mountains 65:Allegheny Mountains 1304:Geared locomotives 1230:2-10-10-10-10-10-2 286:Dearborn, Michigan 278: 128:UIC classification 89:UIC classification 43:, two sets of six 25: 1359: 1358: 290:Russell, Kentucky 237:Maintenance crews 183:Virginian Railway 171: 170: 73:steam locomotives 69:Virginian Railway 53:"Allegheny" class 1389: 1382:Lima locomotives 527: 520: 513: 504: 503: 486: 468: 432: 431: 429: 428: 419:. Archived from 413: 407: 406: 405: 404: 387: 381: 380: 378: 377: 363: 357: 354: 348: 345: 312:Norfolk Southern 305: 302: 193:trains over the 163: 162: 154: 142: 141: 49:trailing wheels. 1397: 1396: 1392: 1391: 1390: 1388: 1387: 1386: 1362: 1361: 1360: 1355: 1331: 1298: 1249: 1241: 1218:2-6-6-2+2-6-6-2 1181: 1173: 1052: 1044: 949: 941: 933: 871: 862: 536: 531: 494: 489: 483: 471: 458: 441: 436: 435: 426: 424: 415: 414: 410: 402: 400: 389: 388: 384: 375: 373: 365: 364: 360: 355: 351: 346: 342: 337: 332: 303: 270: 214:dynamometer car 160: 145:External videos 140: 116: 108: 100: 87: 55:, built by the 17: 12: 11: 5: 1395: 1385: 1384: 1379: 1374: 1372:Whyte notation 1357: 1356: 1354: 1353: 1348: 1343: 1336: 1333: 1332: 1330: 1329: 1324: 1319: 1314: 1308: 1306: 1300: 1299: 1297: 1296: 1291: 1285: 1284: 1279: 1274: 1268: 1267: 1262: 1256: 1254: 1243: 1242: 1240: 1239: 1233: 1232: 1227: 1221: 1220: 1215: 1210: 1204: 1203: 1198: 1192: 1190: 1175: 1174: 1172: 1171: 1165: 1164: 1159: 1154: 1149: 1144: 1139: 1134: 1128: 1127: 1122: 1117: 1112: 1107: 1102: 1097: 1092: 1087: 1081: 1080: 1075: 1070: 1065: 1059: 1057: 1046: 1045: 1043: 1042: 1037: 1032: 1027: 1022: 1016: 1015: 1010: 1005: 1000: 995: 990: 985: 979: 978: 973: 968: 963: 957: 955: 935: 934: 932: 931: 926: 921: 916: 911: 905: 904: 899: 894: 889: 884: 878: 876: 864: 863: 861: 860: 854: 853: 848: 843: 838: 833: 827: 826: 821: 816: 811: 806: 801: 796: 790: 789: 784: 779: 774: 769: 764: 759: 754: 749: 744: 739: 734: 729: 723: 722: 717: 712: 707: 702: 697: 692: 687: 682: 677: 672: 666: 665: 660: 655: 650: 645: 640: 635: 630: 625: 620: 615: 610: 605: 599: 598: 591: 590: 585: 580: 575: 570: 565: 560: 555: 550: 544: 542: 538: 537: 530: 529: 522: 515: 507: 501: 500: 493: 492:External links 490: 488: 487: 481: 469: 456: 442: 440: 437: 434: 433: 408: 382: 358: 349: 339: 338: 336: 333: 331: 328: 282:The Henry Ford 269: 266: 242:driving wheels 169: 168: 156: 155: 147: 146: 139: 136: 130:is refined to 45:driving wheels 41:leading wheels 39:type with two 33:Whyte notation 15: 9: 6: 4: 3: 2: 1394: 1383: 1380: 1378: 1375: 1373: 1370: 1369: 1367: 1352: 1349: 1347: 1344: 1342: 1338: 1337: 1334: 1328: 1325: 1323: 1320: 1318: 1315: 1313: 1310: 1309: 1307: 1305: 1301: 1295: 1292: 1290: 1287: 1286: 1283: 1280: 1278: 1275: 1273: 1270: 1269: 1266: 1263: 1261: 1258: 1257: 1255: 1252: 1248: 1244: 1238: 1235: 1234: 1231: 1228: 1226: 1225:2-8-8-8-8-8-2 1223: 1222: 1219: 1216: 1214: 1211: 1209: 1206: 1205: 1202: 1199: 1197: 1194: 1193: 1191: 1188: 1184: 1180: 1176: 1170: 1167: 1166: 1163: 1160: 1158: 1155: 1153: 1150: 1148: 1145: 1143: 1140: 1138: 1135: 1133: 1130: 1129: 1126: 1123: 1121: 1118: 1116: 1113: 1111: 1108: 1106: 1103: 1101: 1098: 1096: 1093: 1091: 1088: 1086: 1083: 1082: 1079: 1076: 1074: 1071: 1069: 1066: 1064: 1061: 1060: 1058: 1055: 1051: 1047: 1041: 1038: 1036: 1033: 1031: 1028: 1026: 1023: 1021: 1018: 1017: 1014: 1011: 1009: 1006: 1004: 1001: 999: 996: 994: 991: 989: 986: 984: 981: 980: 977: 974: 972: 969: 967: 964: 962: 959: 958: 956: 953: 948: 944: 940: 936: 930: 927: 925: 922: 920: 917: 915: 912: 910: 907: 906: 903: 900: 898: 895: 893: 890: 888: 885: 883: 880: 879: 877: 874: 869: 868:Divided drive 865: 859: 856: 855: 852: 849: 847: 844: 842: 839: 837: 834: 832: 829: 828: 825: 822: 820: 817: 815: 812: 810: 807: 805: 802: 800: 797: 795: 792: 791: 788: 785: 783: 780: 778: 775: 773: 770: 768: 765: 763: 760: 758: 755: 753: 750: 748: 745: 743: 740: 738: 735: 733: 730: 728: 725: 724: 721: 718: 716: 713: 711: 708: 706: 703: 701: 698: 696: 693: 691: 688: 686: 683: 681: 678: 676: 673: 671: 668: 667: 664: 661: 659: 656: 654: 651: 649: 646: 644: 641: 639: 636: 634: 631: 629: 626: 624: 621: 619: 616: 614: 611: 609: 606: 604: 601: 600: 596: 593: 592: 589: 586: 584: 581: 579: 576: 574: 571: 569: 566: 564: 561: 559: 556: 554: 551: 549: 546: 545: 543: 539: 535: 528: 523: 521: 516: 514: 509: 508: 505: 499: 496: 495: 484: 482:0-9647050-1-X 478: 474: 470: 467: 463: 459: 457:0-89024-206-2 453: 449: 444: 443: 423:on 2008-01-27 422: 418: 412: 398: 394: 393: 386: 372: 368: 362: 353: 344: 340: 327: 325: 321: 317: 316:Roanoke Shops 313: 309: 299: 295: 291: 287: 283: 274: 265: 262: 256: 253: 251: 247: 243: 238: 233: 231: 227: 223: 218: 215: 211: 210:C&O Power 206: 203: 198: 196: 192: 188: 184: 180: 176: 166: 157: 153: 148: 143: 135: 133: 129: 124: 123: 119: 115: 111: 107: 103: 98: 94: 90: 84: 82: 78: 74: 70: 66: 62: 58: 54: 50: 46: 42: 38: 34: 30: 21: 1104: 875:engine types 472: 447: 439:Bibliography 425:. Retrieved 421:the original 411: 401:, retrieved 391: 385: 374:. Retrieved 370: 361: 352: 343: 308:N&W 1218 279: 268:Preservation 257: 254: 234: 219: 209: 207: 199: 172: 131: 125: 121: 113: 105: 92: 85: 28: 26: 1208:2-8-8-8-8-2 1040:4-8-4+4-8-4 1035:4-8-2+2-8-4 1030:4-8-0+0-8-4 1025:2-8-2+2-8-2 1020:2-8-0+0-8-2 1013:4-6-4+4-6-4 1008:4-6-2+2-6-4 1003:4-6-0+0-6-4 998:2-6-2+2-6-2 993:2-6-0+0-6-2 988:0-6-2+2-6-0 983:0-6-0+0-6-0 976:4-4-2+2-4-4 971:2-4-2+2-4-2 966:2-4-0+0-4-2 961:0-4-0+0-4-0 417:"Allegheny" 304: 1969 261:Worthington 1366:Categories 1327:Willamette 1185:and other 597:(monorail) 427:2005-05-11 403:2021-07-09 376:2021-07-09 330:References 284:museum in 246:livelihood 1201:2-8-8-8-4 1196:2-8-8-8-2 1187:Multiplex 1169:2-10-10-2 320:Baltimore 897:2-2-4-0T 466:93041472 397:archived 177:for the 132:(1'C)C3' 47:and six 35:) is an 1322:Heisler 1282:0-6-4-0 1251:Engerth 1183:Triplex 1162:4-8-8-4 1157:4-8-8-2 1152:2-8-8-4 1147:2-8-8-2 1142:2-8-8-0 1137:0-8-8-0 1132:0-8-6-0 1125:4-6-6-4 1120:4-6-6-2 1115:4-4-6-2 1110:2-6-8-0 1105:2-6-6-6 1100:2-6-6-4 1095:2-6-6-2 1090:2-6-6-0 1085:0-6-6-0 1078:2-4-4-2 1073:2-4-4-0 1068:0-4-4-2 1063:0-4-4-0 952:Garratt 943:Fairlie 929:4-6-4-4 924:4-4-6-4 919:6-4-4-6 914:4-4-4-4 909:2-4-6-2 902:4-2-2-0 892:2-2-2-2 887:2-2-2-0 882:0-2-2-0 608:0-4-0+4 298:Roanoke 138:History 122:3/4+3/6 106:130+033 29:2-6-6-6 1317:Climax 1054:Mallet 873:Duplex 858:4-14-4 851:4-12-2 846:2-12-4 841:2-12-2 836:2-12-0 831:0-12-0 824:4-10-2 819:4-10-0 814:2-10-4 809:2-10-2 804:2-10-0 799:0-10-2 794:0-10-0 737:0-8-4T 705:2-6-6T 685:0-6-6T 643:2-4-6T 638:2-4-4T 623:0-4-6T 618:0-4-4T 583:4-2-4T 568:2-2-4T 479:  464:  454:  81:tender 1346:Swiss 1294:0-8-6 1289:0-8-4 1277:0-6-4 1272:2-6-4 1265:0-4-6 1260:0-4-4 1253:types 1189:types 1056:types 954:types 947:Meyer 787:6-8-6 782:4-8-6 777:4-8-4 772:4-8-2 767:4-8-0 762:2-8-6 757:2-8-4 752:2-8-2 747:2-8-0 742:0-8-6 732:0-8-2 727:0-8-0 720:4-6-4 715:4-6-2 710:4-6-0 700:2-6-4 695:2-6-2 690:2-6-0 680:0-6-4 675:0-6-2 670:0-6-0 663:4-4-6 658:4-4-4 653:4-4-2 648:4-4-0 633:2-4-2 628:2-4-0 613:0-4-2 603:0-4-0 595:0-3-0 588:6-2-0 578:4-2-2 573:4-2-0 563:2-2-2 558:2-2-0 553:0-2-4 548:0-2-2 335:Notes 224:, to 114:34+36 1312:Shay 950:and 870:and 477:ISBN 462:LCCN 452:ISBN 250:sued 191:coal 126:The 93:1CC3 31:(in 27:The 1351:UIC 1341:AAR 296:in 1368:: 945:, 460:, 369:. 301:c. 120:: 112:: 104:: 91:: 83:. 526:e 519:t 512:v 485:. 430:. 379:. 99:)

Index


Whyte notation
articulated locomotive
leading wheels
driving wheels
trailing wheels.
"Allegheny" class
Lima Locomotive Works
Chesapeake and Ohio Railway
Allegheny Mountains
Virginian Railway
steam locomotives
Pennsylvania Railroad class Q2
tender
UIC classification
Italian classification
French classification
Turkish classification
Swiss classification
UIC classification

Allegheny - Most Powerful Steam Locomotive
H-8 "Allegheny" class locomotives
Chesapeake and Ohio Railway
Virginian Railway
Lima Locomotive Works
coal
Allegheny Mountains
reciprocating piston
dynamometer car

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