Carbon Disc Installation Guide
AP Racing offer the following advice as a guide only for mounting
and installing a Carbon/Carbon Disc.
The preferred mounting method for carbon discs is “ float in the
bell” as this allows for axial and radial float between disc and
bell. Radial float allows differential expansion of disc and bell
thus reducing stresses in the disc.
The idea of axial float is to compensate for a certain amount of
stub axle / upright flex by allowing the disc to take up its
ideal position within the range of float thus avoiding
‘Knockback’ of the caliper pistons. However the float should not
be excessive as disc gyroscopic loads can cause the same effect
that the float is meant to alleviate. The amount of axial float
will depend somewhat on the application. In a ‘perfect’ system
with minimal disc movement relative to the Caliper the amount of
float need only be around 0.45mm nominal float. The drawings
opposite provide information on disc and bell mounting, typical
mounting bell data and an example of disc and caliper ducting.
Disc mounting drawing can be down loaded using the link
below.
Disc Mounting Guide