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An H-drive drivetrain is a system used for heavy off-road vehicles with 6×6 or 8×8 drive to supply power to each wheel station. H-drives do not use axles but rather individual wheel stations, usually carried on a punt chassis. A single differential splits the drive into separate left and right drive shafts, which each run fore and aft inside the bottom corners of the chassis. At each wheel station a bevel box drives the half shaft out to the wheel. == Advantages == * Each wheel station has independent suspension. * Greater ground clearance than conventional axles, as there is no central housing for the differential and final drive. * Lower unsprung weight as only the halfshafts are carried, not the centre differential of an axle. * Only one differential is required – however this also requires that final drive to transmit all of the vehicle's torque. * Losing traction with one wheel still retains traction for the other wheels on that side: in effect a longitudinal diff lock is permanently engaged. This does have the downside of driveline windup though. H-drive is not commonly used for 4 wheel vehicles, as it is relatively complicated for small vehicles. It has been used most widely for military 6×6 chassis in the West. Vehicles of the Warsaw Pact, such as the Tatra 813 and MAZ-535 series, were instead based on narrow backbone chassis with a central propeller shaft. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「H-drive」の詳細全文を読む スポンサード リンク
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