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
New Mexico State Road 501 New Mexico State Road 501 New Mexico Route 501 is a very short state highway in New Mexico, United States of America. Its total length is only about . New Mexico Route 501's southwestern terminus is at New Mexico State Road 4 west of Los Alamos. It runs northeast into the town of Los Alamos, where it ends. It passes through the territory of Los Alamos National Laboratory (LANL), which is closed to the public (the public may drive through on Route 501). Guard posts are at either end of the LANL section of the highway, and motorists passing into