Before revision: On some applications, the drive sprocket and idler wheel carry some of the weight of the vehicle, for the purposes of this description, we will assume the drive sprocket and idler wheel are not weight-bearing units, and the drive sprocket is on the front (see M4 Sherman for an example) .
After revision: On some applications, the drive sprocket and idler wheel carry some of the weight of the vehicle, for the purposes of this description, we will assume the drive sprocket and idler wheel are not weight-bearing units, and the drive sprocket is on the front .