[s-cars] G60 Confusion !! (small typo correction)

[Theodore Chen]

--- QSHIPQ at aol.com wrote:
> It "could" result in more front brake bias, it could result in more braking
> front AND rear without a change in bias at all, it really depends on 3 or 4
> channel abs urS, and other factors (wheel/tire, spring rates, modified cog,
> etc...).  I'm not at all convinced that G60's have a rotor problem at all.
> IN fact, I put a set of "baby black" fixed caliper Brembos on a 5ktq with
> stock rotors, and the braking was phenomenal, and rotor wear reduced to
> less than Big Reds with colemans (btdt) on the same car.

that's interesting.  somebody else put G60 calipers on A8 rotors and
loved the change.  wasn't that graydon?

my point here was that the larger rotors used in the brake upgrade mean
greater braking torque, because the caliper acts at a greater distance
from the center of the rotor.  increasing the rotor diameter by itself
(and moving the caliper radially outwards by a corresponding amount) will
produce more brake torque for a given line pressure.

> I put less credit in pads, and massive (if not all the) credit to the fixed
> caliper Teddy.  IME/O, the G60's biggest problem is caliper stiffness,
> specifically the carrier stiffness, and related, the crap carrier pins.

i have no doubt that the brembos are a substantial improvement over the
G60s.  but the effect of going from an 11" rotor to a 12" or 13" rotor
is huge.  on my mustang, i've gone from 12" to 13" rotors with everything
else staying exactly the same (same caliper, same hub, same rotor thickness,
etc.).  modulation becomes easier, for example.

> I smile when I read all the system xx's...   Hey knock yourself out.  My
> claim is only that a fixed caliper is 90% of the benefit, 6/8/10 pistons?

don't look at me.  i think the humongous calipers are overkill for a
street car, perhaps not so much for track use.  the dinky little brembo
4-pot calipers used on the vipers work pretty well even on the track.

-teddy


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