Thor Forums

[anijet]

Originally Posted by wingnut60

anijet,
What does the term 'swept area' mean in relation to disc brakes? I have heard that used as one of the measurements used to determine brake size/effectiveness?

Swept area is the disc or drum surface area that the linings come in contact with during one full revolution. Remember the disc has two sides and the drum only has one surface. The larger the swept area the better the heat dissipation. A disc of comparative size to a drum doesn't have twice the swept area but it is something like 160% more.