Disc Brakes Take on the Heavies

Disc brakes for trucks have been the subject of intensive investigation in the United States since their adoption on passenger cars and light trucks in the mid 1960s. Although the basic industry work has covered the full range of medium and heavy hydraulic and air-braked trucks, the first commercial use of heavy-duty calipers will be on the front axles of heavy air-braked trucks where their stability and high torque characteristics are of particular advantage in meeting FMVSS 121, scheduled as of this writing to become effective March 1, 1975.