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
Riverside Drive (Manhattan) the south as "Riverside Boulevard." Starting at 72nd Street, Riverside Drive passes through the Manhattan neighborhoods of the Upper West Side, Morningside Heights, over Manhattanville in West Harlem by way of the Riverside Drive Viaduct and through Washington Heights. Below 72nd Street, Riverside Drive continues as Riverside Boulevard which stretches through Riverside South to 59th Street where it merges into the West Side Highway. Only a few stretches of Riverside Drive were built along an older road; due to the hilly terrain, Riverside Drive crosses a natural cleft in the bedrock at 87th Street on an iron viaduct and passes