[Fot] Spit/GT6 Race Pads

[JS Performance Motoring, LLC]

Glen, great point!

Seems that many race pad manufacturers try to give us the most material for
our money with a big, rectangular friction material puck.  This
definitely works against us with the ancient, two piston calipers we run.
More heat, and more surface speed out towards the edge of the rotor is a
recipe for radial taper.

I've found with enough complaining, I can get them to change the shape of
the pad to a trapezoid, and it really does help as you say.  It doesn't
eliminate taper on my GT6 that's brutal on brakes, but it is a big step in
the right direction.

In lieu of a properly designed friction puck, I sometimes use a big file to
adjust the shape of the friction material to accomplish the same thing.

Running a thick spacer behind the pad as they wear down also helps keep the
pistons true to the bore, and reduces heat transfer to the fluid/seals.


Jason Sukey
JS Performance Motoring, LLC
440.984.7720
jason at jsperformancemotoring.com
https://www.facebook.com/JSPerformanceMotoring/


On Wed, Jul 3, 2024 at 12:14 PM fubog1 via Fot <fot at autox.team.net> wrote:

> Another point to consider re pad selection, & I don't see mentioned, is
> make sure that the pads have the correct taper ie backer flat down, the
> profile of the pad side should taper down towards the center of the
> disc/bottom of the pad to some degree, a trapezoid with the long side up,
> ie not be rectangular shape.
> Reason is that a lot more heat is generated towards the OD of the disc, &
> they'll wear more; having less friction surface towards the bottom of the
> pad w/a taper evens the pad wear, & it won't develop the other form of
> "taper", that usually requires that 1st brake pedal stab as the rectangular
> shaped pads do as they wear.
> This applies to all TRs.
> I've also seen many cases where "interchanges" don't consider the shape of
> the pad, although the pads are dimensionally correct & fit.
>
> Glen Efinger
>
> On Monday, July 1, 2024 at 04:43:42 PM EDT, Mark Fisher via Fot <
> fot at autox.team.net> wrote:
>
>
> Hi All:
>
> What do you racers like for front pads on your Spits and GT6s?
>
> Thanks in advance,
>
> Mark Fisher
>
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