H-drive H-drive 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. H-drive is not commonly used for 4 wheel vehicles, as it is relatively complicated for small vehicles. It has
National Roads and Motorists' Association Roads, and was renamed The Open Road in 1927. The Open Road continues to inform NRMA Members about all things motoring, including car reviews, road rules and the work of NRMA in lobbying governments for a better deal for motorists. It also includes content reflecting NRMA's other services for Members such as Travel, Safer Driving School, special Member deals and roadside service. National Roads and Motorists' Association The National Roads and Motorists' Association (NRMA) is an Australian organisation offering roadside assistance, motoring advice, car servicing, International Driving Permits, travel, and other services in New South Wales and the Australian Capital