Document 5brKor41dEZ2V64DNyvQRMaV8

its anti-fade characteristics have led:to extensive testing. For example, the Ford Motor Company put inserts of ceramic ngjji at the position o maximum brake wear on their 19 SQ Thunderbird. The concept was abandoned, reportedly due to uneven braking leading to a directional pull when* braking. - Fiberglass - Attempts to use fiberglass instead of asbestos have been attempted since 1918. So far, no design has met the exacting standards required. As with the other materials, the first stop is harsh. Apparently the design is better for disc brakes than drums. A problem is the sensitivity of the brake to moisture. Owens-Corning are undertaking development* research .in this area. They are very guarded with regard to the status of their work, but state that they are actively engaged in developing a product. To date, no vehicles are known to employ fiberglass in their brake. friction product. Sealed Systems Sealed systems have been seriously considered. Normally, cars rely on air cooling and the movement of air round the brake caused by. the motion of the car. However*with high performance cars, more cooling is required. This is achieved in a simple manner by fabricating a superstructure which scoops up air and directs it inside the brake drum. If a filter were added on the exiting side, this would cause a substantial reduction in emissions. A more elaborate design'which has been used is to liquid cool the. brake system. This enables the braking system to be completely sealed and thus no emission are possible. The one problem area with this design is that the oil seals must be extremely reliable* However, with a well designed system problems due to overheating could be largely eliminated. I IT RESEARCH INSTITUTE 72