Model T Although it was uncommon, the drive bands could fall out of adjustment, allowing the car to creep, particularly when cold, adding another hazard to attempting to start the car: a person cranking the engine could be forced backward while still holding the crank as the car crept forward, although it was nominally in neutral. As the car utilized a wet clutch , this condition could also occur in cold weather, where the thickened oil prevents the clutch discs from slipping freely. Power reached the differential through a single universal joint attached to a torque tube which drove the rear axle ; some models (typically trucks, but available for cars as well) could be equipped with an optional two-speed Ruckstell rear axle shifted by a floor-mounted lever which provided an underdrive gear for easier hill climbing. All gears were vanadium steel running in an oil bath . There are four main types of band lining material commonly used today: [ 16 ] Cotton - Cotton woven linings were the original type fitted and specified by Ford. Like all band materials, if "abused" they will not last their normal lifespan. The same is true of all other band lining materials, but the others described below are less affected by improper use. Generally, the cotton lining is "kinder" to the drum surface, with damage to the drum caused only by the retaining rivets scoring the drum surface. Although this in itself does not pose a problem, a dragging band resulting from