Knowledge

Wheelbase

Source 📝

1718: 140: 1708: 148: 43: 1120:
For example, a deck with a long wheelbase, say 22 inches (55.9 cm), will respond slowly to turns, which is often desirable in high speeds. A deck with a short wheelbase, say 14 inches (35.6 cm), will respond quickly to turns, which is often desirable when skating backyard pools or other terrains requiring quick or intense turns.
1119:
A common misconception is that the choice of wheelbase is influenced by the height of the skateboarder. However, the length of the deck would then be a better candidate, because the wheelbase affects characteristics useful in different speeds or terrains regardless of the height of the skateboarder.
1167:
The wheelbase also affects the load the vehicle poses to the track, track infrastructure and bridges. All other conditions being equal, a shorter wheelbase vehicle represents a more concentrated load to the track than a longer wheelbase vehicle. As railway lines are designed to take a predetermined
1115:
In skateboarding the word 'wheelbase' is used for the distance between the two inner pairs of mounting holes on the deck. This is different from the distance between the rotational centers of the two wheel pairs. A reason for this alternative use is that decks are sold with prefabricated holes, but
173:
is the horizontal distance between the centers of the front and rear wheels. For road vehicles with more than two axles (e.g. some trucks), the wheelbase is the distance between the steering (front) axle and the centerpoint of the driving axle group. In the case of a tri-axle truck, the wheelbase
994:
or even "spin out" if there is too much force on the front tires and not enough on the rear tires. Also, when turning there is lateral torque placed upon the tires which imparts a turning force that depends upon the length of the tire distances from the CM. Thus, in a car with a short wheelbase
567:. So, for example, when a truck is loaded, its center of gravity shifts rearward and the force on the rear tires increases. The vehicle will then ride lower. The amount the vehicle sinks will depend on counter acting forces, like the size of the tires, tire pressure, and the 974:
is the acceleration (or deceleration if the value is negative). So, as is common experience, when the vehicle accelerates, the rear usually sinks and the front rises depending on the suspension. Likewise, when braking the front noses down and the rear rises.
1168:
maximum load per unit of length (tonnes per meter, or pounds per foot), the rail vehicles' wheelbase is designed according to their intended gross weight. The higher the gross weight, the longer the wheelbase must be.
990:) from them. This is why it is crucial, when towing a single-axle caravan, to distribute the caravan's weight so that down-thrust on the tow-hook is about 100 pounds force (400 N). Likewise, a car may 751: 666: 1160:
The wheelbase affects the rail vehicle's capability to negotiate curves. Short-wheelbased vehicles can negotiate sharper curves. On some larger wheelbase locomotives, inner wheels may lack
308: 252: 952: 862: 835: 808: 781: 497: 470: 443: 412: 365: 338: 978:
Because of the effect the wheelbase has on the weight distribution of the vehicle, wheelbase dimensions are crucial to the balance and steering. For example, a
972: 922: 902: 882: 561: 537: 517: 385: 1116:
usually without trucks and wheels. It is therefore easier to use the prefabricated holes for measuring and describing this characteristic of the deck.
1018:
are offered with long-wheelbase variants to increase the spaciousness and therefore the luxury of the vehicle. This practice can often be found on
1139:
are mounted inside the vehicle frame (mostly in steam locomotives), the wheelbase is the distance between the front-most and rear-most wheelsets.
1321: 1437: 583:
respectively. The equation relating the wheelbase, height above the ground of the CM, and the force on each pair of tires becomes:
126: 1128:
In rail vehicles, the wheelbase follows a similar concept. However, since the wheels may be of different sizes (for example, on a
1447: 674: 589: 1747: 1183: 1084: 1078: 151: 1394: 1132:), the measurement is taken between the points where the wheels contact the rail, and not between the centers of the wheels. 64: 1472: 999:
on the rear tire which means greater acceleration and less time for the driver to adjust and prevent a spin out or worse.
1752: 107: 1742: 1547: 79: 1384: 1031: 60: 1757: 1683: 1572: 1512: 1477: 1213: 86: 1462: 1314: 260: 204: 1432: 1404: 53: 93: 1422: 1412: 1023: 31: 75: 1517: 1452: 572: 1542: 1522: 1307: 1233: 1193: 1136: 1707: 1688: 1593: 1198: 1066: 1046:
was given a long-wheelbase version of the Rover 75 for official use. and even some SUVs like the
1003: 174:
would be the distance between the steering axle and a point midway between the two rear axles.
1482: 1369: 1351: 1250: 1096: 1035: 1557: 1364: 1129: 995:("SWB"), the short lever arm from the CM to the rear wheel will result in a greater lateral 927: 564: 840: 813: 786: 759: 475: 448: 421: 390: 343: 316: 1577: 1507: 1277: 194:
of the forces acting on a vehicle is zero. Therefore, the wheelbase is related to the
1678: 1492: 1487: 1378: 1374: 1027: 957: 907: 887: 867: 546: 522: 502: 415: 370: 100: 1736: 1721: 1660: 1645: 1625: 1552: 1389: 1359: 1051: 1019: 1630: 1567: 1537: 1532: 1246: 1062: 576: 139: 190:
equals the distance between its front and rear wheels. At equilibrium, the total
1711: 1635: 1608: 1603: 1467: 1457: 1417: 568: 42: 986:
due to the lack of the load (force) on the front tires and therefore the grip (
1693: 1655: 1497: 1330: 1208: 1178: 1092: 1043: 983: 979: 147: 1650: 1640: 1562: 1527: 1150:
the distance between the pivot points of the front-most and rear-most bogie;
1047: 991: 1153:
the distance between the front-most and rear-most wheelsets of the vehicle;
1156:
the distance between the front-most and rear-most wheelsets of each bogie.
1442: 1058: 1039: 987: 17: 1104: 1100: 1088: 1015: 187: 166: 159: 1613: 1427: 1203: 1161: 1042:
came with 'limousine' versions. Prime Minister of the United Kingdom
191: 1598: 1502: 1188: 1143: 996: 195: 1620: 580: 540: 1303: 1341: 36: 1299: 579:
or decelerating, extra torque is placed on the rear or front
445:
is the distance from the center of mass to the front wheels (
746:{\displaystyle F_{r}={d_{f} \over L}mg+{h_{cm} \over L}ma} 661:{\displaystyle F_{f}={d_{r} \over L}mg-{h_{cm} \over L}ma} 143:
Wheelbase (measured between rotational centers of wheels)
27:
Distance between the centers of the front and rear wheels
1002:
Wheelbases provide the basis for one of the most common
924:
is the acceleration of gravity (approx. 9.8 m/s),
1146:, three wheelbase measurements can be distinguished: 982:
with a much greater weight load on the rear tends to
960: 930: 910: 890: 870: 843: 816: 789: 762: 677: 592: 549: 525: 505: 478: 451: 424: 393: 373: 346: 319: 263: 207: 1671: 1586: 1403: 1350: 67:. Unsourced material may be challenged and removed. 966: 946: 916: 896: 876: 856: 829: 802: 775: 745: 660: 555: 531: 511: 491: 464: 437: 406: 379: 359: 332: 302: 246: 1065:are usually built on shorter wheelbases than the 864:is the distance from the CM to the front wheels, 837:is the distance from the CM to the rear wheels, 198:on each pair of tires by the following formula: 30:For the British TV series of the same name, see 1142:On vehicles where the wheelsets are mounted on 1315: 1095:is so short, relative to the height of their 8: 1322: 1308: 1300: 954:is the height of the CM above the ground, 959: 935: 929: 909: 889: 869: 848: 842: 821: 815: 794: 788: 767: 761: 723: 717: 697: 691: 682: 676: 638: 632: 612: 606: 597: 591: 548: 524: 504: 483: 477: 456: 450: 429: 423: 398: 392: 372: 351: 345: 324: 318: 283: 277: 268: 262: 227: 221: 212: 206: 127:Learn how and when to remove this message 146: 138: 1226: 1061:varieties of some vehicles such as the 303:{\displaystyle F_{r}={d_{f} \over L}mg} 247:{\displaystyle F_{f}={d_{r} \over L}mg} 1258:. Oxford University Press. p. 350 7: 1252:Introduction to Statics and Dynamics 1054:are available with long wheelbases. 65:adding citations to reliable sources 1010:Varying wheelbases within nameplate 1438:Continuously variable transmission 25: 1276:Biggs, Henry (October 27, 2004). 783:is the force on the front tires, 340:is the force on the front tires, 1717: 1716: 1706: 1099:, that they are able to perform 810:is the force on the rear tires, 367:is the force on the rear tires, 41: 1184:Bicycle and motorcycle geometry 1087:on many commercially available 1079:Bicycle and motorcycle geometry 52:needs additional citations for 1: 1473:Automated manual transmission 904:is the mass of the vehicle, 1548:Semi-automatic transmission 1774: 1385:Internal combustion engine 1076: 29: 1702: 1684:Hybrid vehicle drivetrain 1573:Transmission control unit 1513:Limited-slip differential 1478:Electrorheological clutch 1337: 1164:in order to pass curves. 1144:bogies (American: trucks) 418:(CM) to the rear wheels, 414:is the distance from the 1463:Dual-clutch transmission 152:Bike geometry parameters 1433:Constant-velocity joint 1069:they are derived from. 1748:Automotive engineering 1413:Automatic transmission 1135:On vehicles where the 968: 948: 947:{\displaystyle h_{cm}} 918: 898: 878: 858: 831: 804: 777: 747: 662: 557: 533: 513: 493: 466: 439: 408: 381: 361: 334: 304: 248: 165:In both road and rail 162: 144: 1028:ultra-luxury vehicles 1024:Mercedes-Benz S-Class 969: 949: 919: 899: 879: 859: 857:{\displaystyle d_{f}} 832: 830:{\displaystyle d_{r}} 805: 803:{\displaystyle F_{r}} 778: 776:{\displaystyle F_{f}} 748: 663: 558: 534: 514: 494: 492:{\displaystyle d_{r}} 467: 465:{\displaystyle d_{f}} 440: 438:{\displaystyle d_{f}} 409: 407:{\displaystyle d_{r}} 382: 362: 360:{\displaystyle F_{r}} 335: 333:{\displaystyle F_{f}} 305: 249: 150: 142: 32:Wheelbase (TV series) 1518:Locking differential 1453:Direct-shift gearbox 958: 928: 908: 888: 868: 841: 814: 787: 760: 675: 590: 575:. If the vehicle is 547: 543:of the vehicle, and 523: 503: 476: 449: 422: 391: 371: 344: 317: 261: 205: 61:improve this article 1753:Physical quantities 1543:Preselector gearbox 1523:Manual transmission 1194:Overhang (vehicles) 1032:Rolls-Royce Phantom 1743:Vehicle technology 1689:Electric generator 1594:Wheel hub assembly 1234:ISO 8855:2011, 4.2 1199:Static equilibrium 1004:vehicle size class 964: 944: 914: 894: 884:is the wheelbase, 874: 854: 827: 800: 773: 743: 658: 553: 529: 509: 489: 462: 435: 404: 387:is the wheelbase, 377: 357: 330: 300: 244: 163: 145: 1730: 1729: 1483:Epicyclic gearing 1352:Automotive engine 1282:autoexpress.co.uk 1137:wheelsets (axles) 1036:large family cars 967:{\displaystyle a} 917:{\displaystyle g} 897:{\displaystyle m} 877:{\displaystyle L} 735: 706: 650: 621: 556:{\displaystyle g} 532:{\displaystyle m} 512:{\displaystyle L} 380:{\displaystyle L} 292: 236: 137: 136: 129: 111: 16:(Redirected from 1765: 1758:Vehicle dynamics 1720: 1719: 1710: 1587:Wheels and tires 1558:Torque converter 1324: 1317: 1310: 1301: 1294: 1293: 1291: 1289: 1273: 1267: 1266: 1264: 1263: 1257: 1242: 1236: 1231: 1130:steam locomotive 973: 971: 970: 965: 953: 951: 950: 945: 943: 942: 923: 921: 920: 915: 903: 901: 900: 895: 883: 881: 880: 875: 863: 861: 860: 855: 853: 852: 836: 834: 833: 828: 826: 825: 809: 807: 806: 801: 799: 798: 782: 780: 779: 774: 772: 771: 752: 750: 749: 744: 736: 731: 730: 718: 707: 702: 701: 692: 687: 686: 667: 665: 664: 659: 651: 646: 645: 633: 622: 617: 616: 607: 602: 601: 565:gravity constant 562: 560: 559: 554: 538: 536: 535: 530: 518: 516: 515: 510: 498: 496: 495: 490: 488: 487: 471: 469: 468: 463: 461: 460: 444: 442: 441: 436: 434: 433: 413: 411: 410: 405: 403: 402: 386: 384: 383: 378: 366: 364: 363: 358: 356: 355: 339: 337: 336: 331: 329: 328: 309: 307: 306: 301: 293: 288: 287: 278: 273: 272: 253: 251: 250: 245: 237: 232: 231: 222: 217: 216: 132: 125: 121: 118: 112: 110: 69: 45: 37: 21: 1773: 1772: 1768: 1767: 1766: 1764: 1763: 1762: 1733: 1732: 1731: 1726: 1698: 1667: 1582: 1578:Universal joint 1508:Hotchkiss drive 1399: 1346: 1333: 1328: 1298: 1297: 1287: 1285: 1275: 1274: 1270: 1261: 1259: 1255: 1244: 1243: 1239: 1232: 1228: 1223: 1218: 1174: 1126: 1113: 1097:centers of mass 1081: 1075: 1012: 956: 955: 931: 926: 925: 906: 905: 886: 885: 866: 865: 844: 839: 838: 817: 812: 811: 790: 785: 784: 763: 758: 757: 719: 693: 678: 673: 672: 634: 608: 593: 588: 587: 545: 544: 521: 520: 501: 500: 479: 474: 473: 452: 447: 446: 425: 420: 419: 394: 389: 388: 369: 368: 347: 342: 341: 320: 315: 314: 279: 264: 259: 258: 223: 208: 203: 202: 180: 133: 122: 116: 113: 70: 68: 58: 46: 35: 28: 23: 22: 15: 12: 11: 5: 1771: 1769: 1761: 1760: 1755: 1750: 1745: 1735: 1734: 1728: 1727: 1725: 1724: 1714: 1703: 1700: 1699: 1697: 1696: 1691: 1686: 1681: 1679:Electric motor 1675: 1673: 1669: 1668: 1666: 1665: 1664: 1663: 1658: 1653: 1648: 1643: 1638: 1633: 1628: 1618: 1617: 1616: 1611: 1606: 1596: 1590: 1588: 1584: 1583: 1581: 1580: 1575: 1570: 1565: 1560: 1555: 1550: 1545: 1540: 1535: 1530: 1525: 1520: 1515: 1510: 1505: 1500: 1495: 1493:Friction drive 1490: 1488:Fluid coupling 1485: 1480: 1475: 1470: 1465: 1460: 1455: 1450: 1445: 1440: 1435: 1430: 1425: 1420: 1415: 1409: 1407: 1401: 1400: 1398: 1397: 1392: 1387: 1382: 1379:Plug-in hybrid 1372: 1367: 1362: 1356: 1354: 1348: 1347: 1338: 1335: 1334: 1329: 1327: 1326: 1319: 1312: 1304: 1296: 1295: 1284:. Auto Express 1268: 1237: 1225: 1224: 1222: 1219: 1217: 1216: 1211: 1206: 1201: 1196: 1191: 1186: 1181: 1175: 1173: 1170: 1158: 1157: 1154: 1151: 1125: 1122: 1112: 1109: 1077:Main article: 1074: 1071: 1020:full-size cars 1011: 1008: 963: 941: 938: 934: 913: 893: 873: 851: 847: 824: 820: 797: 793: 770: 766: 754: 753: 742: 739: 734: 729: 726: 722: 716: 713: 710: 705: 700: 696: 690: 685: 681: 669: 668: 657: 654: 649: 644: 641: 637: 631: 628: 625: 620: 615: 611: 605: 600: 596: 552: 528: 508: 486: 482: 459: 455: 432: 428: 416:center of mass 401: 397: 376: 354: 350: 327: 323: 311: 310: 299: 296: 291: 286: 282: 276: 271: 267: 255: 254: 243: 240: 235: 230: 226: 220: 215: 211: 179: 176: 135: 134: 49: 47: 40: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1770: 1759: 1756: 1754: 1751: 1749: 1746: 1744: 1741: 1740: 1738: 1723: 1715: 1713: 1709: 1705: 1704: 1701: 1695: 1692: 1690: 1687: 1685: 1682: 1680: 1677: 1676: 1674: 1670: 1662: 1659: 1657: 1654: 1652: 1649: 1647: 1644: 1642: 1639: 1637: 1634: 1632: 1629: 1627: 1624: 1623: 1622: 1619: 1615: 1612: 1610: 1607: 1605: 1602: 1601: 1600: 1597: 1595: 1592: 1591: 1589: 1585: 1579: 1576: 1574: 1571: 1569: 1566: 1564: 1561: 1559: 1556: 1554: 1553:Shift-by-wire 1551: 1549: 1546: 1544: 1541: 1539: 1536: 1534: 1531: 1529: 1526: 1524: 1521: 1519: 1516: 1514: 1511: 1509: 1506: 1504: 1501: 1499: 1496: 1494: 1491: 1489: 1486: 1484: 1481: 1479: 1476: 1474: 1471: 1469: 1466: 1464: 1461: 1459: 1456: 1454: 1451: 1449: 1446: 1444: 1441: 1439: 1436: 1434: 1431: 1429: 1426: 1424: 1421: 1419: 1416: 1414: 1411: 1410: 1408: 1406: 1402: 1396: 1393: 1391: 1390:Petrol engine 1388: 1386: 1383: 1380: 1376: 1373: 1371: 1368: 1366: 1363: 1361: 1360:Diesel engine 1358: 1357: 1355: 1353: 1349: 1345: 1343: 1336: 1332: 1325: 1320: 1318: 1313: 1311: 1306: 1305: 1302: 1283: 1279: 1272: 1269: 1254: 1253: 1248: 1245:Ruina, Andy; 1241: 1238: 1235: 1230: 1227: 1220: 1215: 1212: 1210: 1207: 1205: 1202: 1200: 1197: 1195: 1192: 1190: 1187: 1185: 1182: 1180: 1177: 1176: 1171: 1169: 1165: 1163: 1155: 1152: 1149: 1148: 1147: 1145: 1140: 1138: 1133: 1131: 1123: 1121: 1117: 1110: 1108: 1106: 1102: 1098: 1094: 1090: 1086: 1080: 1072: 1070: 1068: 1064: 1060: 1057:In contrast, 1055: 1053: 1052:Jeep Wrangler 1049: 1045: 1041: 1037: 1033: 1029: 1025: 1021: 1017: 1009: 1007: 1005: 1000: 998: 993: 989: 985: 981: 976: 961: 939: 936: 932: 911: 891: 871: 849: 845: 822: 818: 795: 791: 768: 764: 740: 737: 732: 727: 724: 720: 714: 711: 708: 703: 698: 694: 688: 683: 679: 671: 670: 655: 652: 647: 642: 639: 635: 629: 626: 623: 618: 613: 609: 603: 598: 594: 586: 585: 584: 582: 578: 574: 570: 566: 550: 542: 526: 506: 484: 480: 457: 453: 430: 426: 417: 399: 395: 374: 352: 348: 325: 321: 297: 294: 289: 284: 280: 274: 269: 265: 257: 256: 241: 238: 233: 228: 224: 218: 213: 209: 201: 200: 199: 197: 193: 189: 185: 177: 175: 172: 168: 161: 157: 153: 149: 141: 131: 128: 120: 117:December 2011 109: 106: 102: 99: 95: 92: 88: 85: 81: 78: –  77: 73: 72:Find sources: 66: 62: 56: 55: 50:This article 48: 44: 39: 38: 33: 19: 1631:Racing slick 1568:Transfer box 1538:Park-by-wire 1533:Parking pawl 1448:Differential 1423:Direct-drive 1405:Transmission 1395:Steam engine 1340:Part of the 1339: 1286:. Retrieved 1281: 1271: 1260:. Retrieved 1251: 1247:Rudra Pratap 1240: 1229: 1166: 1159: 1141: 1134: 1127: 1118: 1114: 1082: 1063:Honda Accord 1056: 1030:such as the 1013: 1001: 977: 755: 577:accelerating 312: 183: 181: 170: 164: 155: 123: 114: 104: 97: 90: 83: 71: 59:Please help 54:verification 51: 1609:Alloy wheel 1468:Drive wheel 1458:Drive shaft 1418:Chain drive 1209:Wheel gauge 1111:Skateboards 1093:motorcycles 569:spring rate 76:"Wheelbase" 1737:Categories 1694:Alternator 1342:Automobile 1331:Powertrain 1278:"Rover 75" 1262:2007-03-23 1221:References 1179:Axle track 1044:Tony Blair 984:understeer 573:suspension 87:newspapers 1563:Transaxle 1528:Manumatic 1498:Gearshift 1370:Fuel cell 1085:wheelbase 1048:VW Tiguan 1038:like the 1034:and even 1022:like the 1006:systems. 992:oversteer 630:− 184:wheelbase 171:wheelbase 156:wheelbase 18:Axle base 1722:Category 1661:Tubeless 1646:Run-flat 1626:Off-road 1443:Coupling 1365:Electric 1249:(2002). 1214:Wheelset 1172:See also 1105:wheelies 1101:stoppies 1089:bicycles 1040:Rover 75 1016:vehicles 988:friction 178:Vehicles 167:vehicles 1162:flanges 571:of the 563:is the 539:is the 188:vehicle 160:bicycle 101:scholar 1712:Portal 1672:Hybrid 1636:Radial 1614:Hubcap 1428:Clutch 1375:Hybrid 1344:series 1288:May 8, 1204:Weight 1067:sedans 1026:, but 756:where 313:where 192:torque 169:, the 154:: The 103:  96:  89:  82:  74:  1656:Spare 1599:Wheel 1503:Giubo 1256:(PDF) 1189:Force 1073:Bikes 1059:coupé 1014:Some 997:force 196:force 186:of a 158:of a 108:JSTOR 94:books 1651:Snow 1641:Rain 1621:Tire 1290:2017 1124:Rail 1103:and 1091:and 1083:The 1050:and 581:tire 541:mass 182:The 80:news 1604:Rim 980:car 519:), 63:by 1739:: 1280:. 1107:. 499:= 472:+ 1381:) 1377:( 1323:e 1316:t 1309:v 1292:. 1265:. 962:a 940:m 937:c 933:h 912:g 892:m 872:L 850:f 846:d 823:r 819:d 796:r 792:F 769:f 765:F 741:a 738:m 733:L 728:m 725:c 721:h 715:+ 712:g 709:m 704:L 699:f 695:d 689:= 684:r 680:F 656:a 653:m 648:L 643:m 640:c 636:h 627:g 624:m 619:L 614:r 610:d 604:= 599:f 595:F 551:g 527:m 507:L 485:r 481:d 458:f 454:d 431:f 427:d 400:r 396:d 375:L 353:r 349:F 326:f 322:F 298:g 295:m 290:L 285:f 281:d 275:= 270:r 266:F 242:g 239:m 234:L 229:r 225:d 219:= 214:f 210:F 130:) 124:( 119:) 115:( 105:· 98:· 91:· 84:· 57:. 34:. 20:)

Index

Axle base
Wheelbase (TV series)

verification
improve this article
adding citations to reliable sources
"Wheelbase"
news
newspapers
books
scholar
JSTOR
Learn how and when to remove this message


Bike geometry parameters
bicycle
vehicles
vehicle
torque
force
center of mass
mass
gravity constant
spring rate
suspension
accelerating
tire
car
understeer

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.