An axially, slidable brake disc system employs leaf springs between a hub
of a suspension casting or knuckle to float the brake discs for axial
sliding movement, while holding the discs against wobbling, and employs
brake pads which are biased by springs to float on a stationary bridge so
that the contact between the brake pads and discs is a light random
contact thereby resulting in reduced residual torque drag and disc
thickness variation. The rotating brake discs will shift axially, slightly
from the braking position to the off-brake position with the brake pads
urged by their spring forces to keep their pad faces parallel to and
slightly spaced from adjacent brake disc surfaces to prevent corner
engagement and localized rubbing contact thereby reducing pad wear,
residual drag torque and disc thickness variation. The brake force
applicator may be mounted at a 12:00 position and in an integral bore in
the suspension knuckle to reduce the size, weight, and space envelope of
the braking system. Less braking pressure is needed with two brake discs
and four brake pads and the system will pass the AMS fade test.