[Roadsters] Brake question

[Stan Chernoff]

The roadster calipers are designed to slightly retract the 
pads.  That is what the pin in the center of the piston does.  There 
is a clutchlike mechanism inside each piston.

Stan
=======

At 12:14 PM 5/20/2013, Jerry Krakauer wrote:
>Actually, while I don't have a lot of knowledge of newer floating calipers,
>on older designed fixed calipers the pads are always lightly rubbing on the
>rotors, they do not retract. This wiping action is one of the reasons for
>improved wet braking compared to drums. Identifying the cause of squeal is
>one of those things that can drive you nuts. It may be caused by sympathetic
>vibrations between the pad material and rotors. If that's the case you may
>want to try anti-squeal compound on the backs of the pads. Or, you may want
>to try an aggressive bed in procedure. On and off chirping can also indicate
>disc run-out (many call it warping these days) Use a dial indicator to see
>if the rotors are true. If not, they can be cut if still within tolerance.
>
>Also, these Dunlop calipers have no guide pins, Pins are used on floating
>calipers, and yes the pads are the same as the series 1 XKE.
>
>Jerry Krakauer
>SRL311 00099