05-02-2020, 01:37 AM
Hi Tony
The self servo leverage about the pivot is generated largely by the leading edge of the leading shoe and increases as the leading edge is advanced and the angle of thrust changes. So cutting it back reduces the effect. The effect is increased with older high friction linings.
It is not suggested in this case but many materails of the last 50 years intended for assisted brakes are very poor on older cars, including hydraulic.
The self servo leverage about the pivot is generated largely by the leading edge of the leading shoe and increases as the leading edge is advanced and the angle of thrust changes. So cutting it back reduces the effect. The effect is increased with older high friction linings.
It is not suggested in this case but many materails of the last 50 years intended for assisted brakes are very poor on older cars, including hydraulic.