251:
348:
408:
474:
313:
385:
36:
133:
220:
290:
515:
300:
There were initially few electric locomotives with this wheel arrangement, as they are usually lighter than diesel-electrics of similar power and so could manage a similar axle loading with a simpler Bo-Bo arrangement. Some of the few early examples were the French
542:. They were derived from the earlier English Electric 1Co-Co1 bogie design, but to provide increased flexibility for the long wheelbase bogie they used a four-wheeled bogie with more side play, rather than a pony truck.
250:
420:
The 1Co-Co1 wheel arrangement is an alternative to the Co-Co arrangement which has been used where it was desired to reduce axle load. Each 'Co' bogie has an additional non-powered axle in an integral
488:, like Co+Co, is an articulated variant where the drawbar forces are taken between the bogies rather than through the frame. These were used in South Africa, for lighter loadings on the lightly laid
323:
As high-speed electric locomotives in the 1980s began to achieve powers in the 6,000 hp range, new Co-Co designs appeared, as more axles were needed to distribute this high power. The
825:
425:
176:
830:
732:
145:
137:
698:
673:
581:
1223:
240:
339:
arrangement. This provides the same number of axles for traction, although with shorter bogie wheelbases and so gives a smoother ride.
119:
53:
1173:
1128:
1013:
874:
725:
100:
644:
632:
613:
597:
72:
57:
272:. There was a two-speed mechanical transmission with drive shafts to the bogies and the axles on each bogie were linked by
894:
539:
864:
360:
In C-C (Commonwealth) or C′C′ (UIC) arrangements, the axles of each bogie are coupled together. This may be for either a
395:
Co+Co is the code for a similar wheel arrangement but with an articulated connection between the bogies. The buffer and
269:
79:
1218:
361:
1213:
718:
86:
46:
1118:
948:
265:
259:
529:
440:
244:
399:
forces are taken between the bogies rather than through the frame. These were mostly popular in South Africa.
68:
1024:
988:
929:
424:
to spread the load. As the pony truck is articulated within the bogie, the arrangement is (1′Co)(Co1′) in
388:
204:
1103:
1003:
924:
889:
854:
820:
456:
452:
448:
444:
436:
411:
351:
324:
316:
306:
262:
188:
1192:
1088:
899:
665:
660:
Clough, David N. (2005). "Pre-Nationalisation
Prototypes: Southern Railway prototypes Nos 10201–3".
347:
1152:
919:
879:
525:
518:
164:
473:
432:
1078:
869:
802:
332:
302:
605:
958:
812:
694:
669:
640:
609:
577:
407:
396:
160:
156:
144:
93:
1068:
914:
859:
750:
391:
of 1947, showing the Co+Co arrangement of the bogies with the drawgear below the body frame
1162:
1063:
528:
were built in the mid-1950s by
English Electric in Britain, as the first diesels for the
373:
1157:
1147:
1108:
1048:
1043:
1008:
904:
884:
835:
503:
478:
328:
293:
172:
376:
with a single traction motor. These are used for both electrics and diesel-electrics.
1207:
1137:
1083:
1058:
1053:
978:
953:
1098:
983:
963:
312:
273:
502:. A number of Japanese electrics from the 1930s, also on Cape gauge, such as the
1113:
1093:
1073:
993:
767:
431:
This rare arrangement was used primarily in
Britain with the development of the
384:
369:
365:
35:
207:. They are also popular because the greater number of axles results in a lower
132:
1033:
998:
968:
909:
845:
777:
755:
741:
498:
421:
232:
1182:
792:
787:
772:
759:
208:
219:
485:
468:
1187:
782:
336:
1142:
1038:
414:
236:
200:
289:
797:
17:
710:
327:
was a predominantly freight locomotive of this arrangement for the
239:
layout with six axles to reduce axle load. After WWII, the
British
973:
939:
551:
514:
513:
472:
406:
383:
346:
311:
288:
249:
228:
218:
168:
143:
131:
714:
29:
231:
arrangement. As they grew in power and weight, from 1937 the
439:' first three prototype mainline diesel-electric designs,
227:
The first mainline diesel-electric locomotives were of
602:
The
British Internal Combustion Locomotive, 1894–1940
443:, and then on production vehicles in British Rail's
1171:
1127:
1022:
938:
844:
811:
749:
60:. Unsourced material may be challenged and removed.
258:The first C-C design recorded was a narrow-gauge
576:. Melbourne University Publishing. p. 212.
627:
625:
726:
8:
296:3,355 hp heavy-freight electric loco of 1933
247:with some of the first Co-Co arrangements.
733:
719:
711:
691:British Rail Standard Diesels of the 1960s
637:Sulzer Diesel Locomotives of British Rail
120:Learn how and when to remove this message
203:work as the extra wheels give them good
171:with all axles powered, with a separate
564:
689:Clough, David N. (2009). "Class 40".
7:
268:-engined locomotive of 1903 for the
58:adding citations to reliable sources
639:. David & Charles. p. 30.
574:The Railways of Victoria 1854–2004
25:
179:(Europe) for this arrangement is
554:, which has two uncoupled bogies
140:Co-Co diesel-electric locomotive
34:
1014:Schwartzkopff-Eckhardt II bogie
364:transmission with a mechanical
45:needs additional citations for
693:. Ian Allan. pp. 94–100.
1:
506:also used this arrangement.
270:Chattenden and Upnor Railway
27:Locomotive wheel arrangement
1224:Commonwealth classification
254:The 1903 Hornsby locomotive
1240:
466:
372:to each axle. Otherwise a
352:British Railways class 52
199:Co-Cos are most suited to
949:AAR type A switcher truck
331:, although the passenger
245:two prototype locomotives
175:per axle. The equivalent
531:3 ft 6 in
490:3 ft 6 in
447:and "Peaks" (BR classes
148:Co-Co wheel arrangement
989:Krauss-Helmholtz bogie
521:
482:
417:
392:
389:South African class 3E
357:
320:
297:
255:
224:
149:
141:
1004:Radial steering truck
821:AAR wheel arrangement
517:
476:
467:Further information:
412:British Rail Class 40
410:
387:
350:
317:British Rail Class 89
315:
292:
253:
222:
167:with two six-wheeled
147:
138:New Zealand DFT class
135:
831:Swiss classification
635:(1978). "Class 44".
572:Lee, Robert (2007).
540:New Zealand railways
307:British Railways EM2
285:Electric locomotives
165:electric locomotives
54:improve this article
606:David & Charles
526:New Zealand D class
519:New Zealand D class
319:25 kV electric
1079:Klien-Lindner axle
826:UIC classification
803:Dual Control Stand
522:
483:
418:
393:
358:
333:Eurotunnel Class 9
321:
298:
256:
225:
177:UIC classification
150:
142:
69:"Co-Co locomotive"
1219:Co+Co locomotives
1214:Co-Co locomotives
1201:
1200:
1104:Road–rail vehicle
1089:Luttermöller axle
959:Articulated bogie
813:Wheel arrangement
700:978-0-7110-3373-3
675:978-0-7110-3067-1
583:978-0-522-85134-2
437:Southern Railways
368:to the bogie and
223:LMS 10000 of 1947
191:(North America).
157:wheel arrangement
130:
129:
122:
104:
16:(Redirected from
1231:
974:Cleminson system
735:
728:
721:
712:
705:
704:
686:
680:
679:
657:
651:
650:
629:
620:
619:
594:
588:
587:
569:
537:
532:
501:
495:
491:
362:diesel-hydraulic
305:of 1949 and the
125:
118:
114:
111:
105:
103:
62:
38:
30:
21:
1239:
1238:
1234:
1233:
1232:
1230:
1229:
1228:
1204:
1203:
1202:
1197:
1167:
1123:
1064:Equalising beam
1018:
934:
840:
807:
754:
745:
739:
709:
708:
701:
688:
687:
683:
676:
662:Diesel Pioneers
659:
658:
654:
647:
631:
630:
623:
616:
596:
595:
591:
584:
571:
570:
566:
561:
548:
535:
530:
512:
497:
493:
489:
471:
465:
405:
382:
374:monomotor bogie
345:
287:
282:
217:
197:
126:
115:
109:
106:
63:
61:
51:
39:
28:
23:
22:
15:
12:
11:
5:
1237:
1235:
1227:
1226:
1221:
1216:
1206:
1205:
1199:
1198:
1196:
1195:
1190:
1185:
1179:
1177:
1174:exhaust system
1169:
1168:
1166:
1165:
1160:
1155:
1150:
1145:
1140:
1134:
1132:
1129:Exhaust system
1125:
1124:
1122:
1121:
1116:
1111:
1109:Trailing wheel
1106:
1101:
1096:
1091:
1086:
1081:
1076:
1071:
1066:
1061:
1056:
1051:
1049:Carrying wheel
1046:
1044:Beugniot lever
1041:
1036:
1030:
1028:
1020:
1019:
1017:
1016:
1011:
1009:Scheffel bogie
1006:
1001:
996:
991:
986:
981:
976:
971:
966:
961:
956:
951:
945:
943:
936:
935:
933:
932:
927:
922:
917:
912:
907:
902:
897:
892:
887:
882:
877:
872:
867:
862:
857:
851:
849:
842:
841:
839:
838:
836:Whyte notation
833:
828:
823:
817:
815:
809:
808:
806:
805:
800:
795:
790:
785:
780:
775:
770:
764:
762:
747:
746:
740:
738:
737:
730:
723:
715:
707:
706:
699:
681:
674:
668:. p. 11.
652:
645:
621:
614:
608:. p. 19.
589:
582:
563:
562:
560:
557:
556:
555:
547:
544:
511:
508:
464:
461:
404:
401:
381:
378:
344:
341:
335:instead use a
329:Channel Tunnel
294:DRG E 93 class
286:
283:
281:
278:
266:Hornsby-Akroyd
263:opposed-piston
216:
213:
211:to the track.
196:
193:
173:traction motor
128:
127:
42:
40:
33:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
1236:
1225:
1222:
1220:
1217:
1215:
1212:
1211:
1209:
1194:
1191:
1189:
1186:
1184:
1181:
1180:
1178:
1175:
1170:
1164:
1161:
1159:
1156:
1154:
1151:
1149:
1146:
1144:
1141:
1139:
1136:
1135:
1133:
1130:
1126:
1120:
1117:
1115:
1112:
1110:
1107:
1105:
1102:
1100:
1097:
1095:
1092:
1090:
1087:
1085:
1084:Leading wheel
1082:
1080:
1077:
1075:
1072:
1070:
1069:Gölsdorf axle
1067:
1065:
1062:
1060:
1059:Driving wheel
1057:
1055:
1054:Coupled wheel
1052:
1050:
1047:
1045:
1042:
1040:
1037:
1035:
1032:
1031:
1029:
1026:
1021:
1015:
1012:
1010:
1007:
1005:
1002:
1000:
997:
995:
992:
990:
987:
985:
982:
980:
979:Grovers bogie
977:
975:
972:
970:
967:
965:
962:
960:
957:
955:
954:Arnoux system
952:
950:
947:
946:
944:
941:
937:
931:
928:
926:
923:
921:
918:
916:
913:
911:
908:
906:
903:
901:
898:
896:
893:
891:
888:
886:
883:
881:
878:
876:
873:
871:
868:
866:
865:Bagnall–Price
863:
861:
858:
856:
853:
852:
850:
847:
843:
837:
834:
832:
829:
827:
824:
822:
819:
818:
816:
814:
810:
804:
801:
799:
796:
794:
791:
789:
786:
784:
781:
779:
776:
774:
771:
769:
766:
765:
763:
761:
757:
752:
748:
743:
736:
731:
729:
724:
722:
717:
716:
713:
702:
696:
692:
685:
682:
677:
671:
667:
663:
656:
653:
648:
642:
638:
634:
628:
626:
622:
617:
611:
607:
603:
599:
593:
590:
585:
579:
575:
568:
565:
558:
553:
550:
549:
545:
543:
541:
536:1,067 mm
533:
527:
520:
516:
509:
507:
505:
500:
494:1,067 mm
487:
480:
475:
470:
462:
460:
458:
454:
450:
446:
442:
438:
434:
429:
427:
423:
416:
413:
409:
402:
400:
398:
390:
386:
379:
377:
375:
371:
367:
363:
356:
355:
349:
342:
340:
338:
334:
330:
326:
318:
314:
310:
308:
304:
295:
291:
284:
279:
277:
275:
274:coupling rods
271:
267:
264:
261:
252:
248:
246:
242:
238:
234:
230:
221:
214:
212:
210:
206:
202:
194:
192:
190:
186:
182:
178:
174:
170:
166:
162:
158:
154:
146:
139:
134:
124:
121:
113:
110:February 2018
102:
99:
95:
92:
88:
85:
81:
78:
74:
71: –
70:
66:
65:Find sources:
59:
55:
49:
48:
43:This article
41:
37:
32:
31:
19:
1099:Railway tire
1025:running gear
984:Jacobs bogie
964:Bissel truck
753:positioning
690:
684:
661:
655:
636:
601:
592:
573:
567:
523:
484:
433:Bollen bogie
430:
426:UIC notation
419:
394:
370:final drives
359:
353:
322:
299:
257:
226:
198:
184:
180:
152:
151:
116:
107:
97:
90:
83:
76:
64:
52:Please help
47:verification
44:
1114:Train wheel
1094:Radial axle
1074:Journal box
994:Mason Bogie
930:Walschaerts
768:Cab forward
633:Webb, Brian
598:Webb, Brian
441:10201–10203
366:drive shaft
325:BR class 92
233:EMD E-units
1208:Categories
1034:Adams axle
999:Pony truck
969:Blomberg B
925:Stephenson
910:Kuhn slide
846:Valve gear
778:Steeplecab
756:Short hood
742:Locomotive
646:0715375148
615:0715361155
559:References
499:Cape gauge
422:pony truck
80:newspapers
1183:Blastpipe
900:Hackworth
793:Cowl unit
788:Hood unit
773:Sharknose
760:Long hood
666:Ian Allan
477:Japanese
435:; on the
309:of 1953.
209:axle load
1188:Smokebox
1176:elements
1153:Lemaître
1119:Wheelset
1027:elements
920:Southern
880:Caprotti
783:Cab unit
600:(1973).
546:See also
445:Class 40
337:Bo-Bo-Bo
280:Variants
243:ordered
235:used an
205:traction
1193:Chimney
1172:Common
1163:Lemprex
1143:Kylchap
1039:Axlebox
895:Gresley
875:Bulleid
870:Baguley
510:2Co-Co2
486:1Co+Co1
481:in 1938
469:1Co+Co1
463:1Co+Co1
415:1Co-Co1
403:1Co-Co1
397:drawbar
354:Western
303:CC 7100
260:Hornsby
237:A1A-A1A
215:History
201:freight
155:is the
94:scholar
1158:Lempor
1148:Kylpor
1023:Other
798:Boxcab
744:design
697:
672:
643:
612:
580:
455:, and
181:Co′Co′
169:bogies
161:diesel
96:
89:
82:
75:
67:
1138:Giesl
1131:types
942:types
940:Bogie
915:Lentz
890:Gooch
860:Baker
855:Allan
848:types
552:Co-Bo
380:Co+Co
229:Bo-Bo
183:, or
153:Co-Co
101:JSTOR
87:books
18:Co+Co
695:ISBN
670:ISBN
641:ISBN
610:ISBN
578:ISBN
524:The
504:EF10
479:EF10
187:for
163:and
159:for
73:news
905:Joy
885:Gab
751:Cab
459:).
343:C-C
241:LMS
195:Use
189:AAR
185:C-C
56:by
1210::
758:/
664:.
624:^
604:.
538:)
496:)
457:46
453:45
451:,
449:44
428:.
276:.
136:A
734:e
727:t
720:v
703:.
678:.
649:.
618:.
586:.
534:(
492:(
123:)
117:(
112:)
108:(
98:·
91:·
84:·
77:·
50:.
20:)
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