urq@audifans.com

[Todd Phenneger]

I'm not following why you feel thats not logical.  In ANY multi
piston arrangement you always want the smaller piston in front
and the larger in back.  IF you do not you will have uneven pad
wear across the length of the pad.  You need the extra force at
the rear of the bad as the front of the pad has a natural
tendency to BITE into the rotor and wear faster.  By increasing
the force on the rear of the bad this evens the wear on that
pad.
  A simplistic example is the old brakes on Pedal Power bikes.
I you look at them they almost always wear much faster at the
leadign edge because of the tendency for the front to BITE into
the surface.
  Additionally, you may notice that some pads have a bevel at
the front of them to reduce this tendency a little.  Some do
not.
  Does that answer your question or not?
l8r
  Todd

--- Tony Lum <tlum at flash.net> wrote:
> Hi guys,
>
> The G60 brake caliper has a larger and a smaller piston.  The
> smaller
> piston is on the leading edge of the rotor with the larger
> piston trailing
> on the front mounted T44s.  The caliper is rear mounted on the
> CQs yet the
> smaller piston is still on the leading edge.  Can someone
> explain the logic
> behind that?
>
> TIA,
>
>
>
>
> -Tony
>
> '80 5KS
> 83 urquattro #DA900302
> '85 4kq
> '87 5kcstq
> '87.5 coupe GT
>
>


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