[s-cars] G60 Confusion !! (

[QSHIPQ at aol.com]

In a message dated 10/29/2003 5:40:37 PM Eastern Standard Time, tedebearp at yahoo.com writes:

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

not sure, but I could see it helping.  IMS the A8 is a thicker rotor than the standard G60 which means that the flex of the caliper under load is less, and heat dissipation is better too, all else being equal.

>
> 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 won't jump there with you teddy, not necessarily on a G60 setup.  It *can* produce more brake torque, it can also distort the caliper more (and does).  Fixed caliper arrangements make this argument easier to accept, but hard to go there with the G60.

> 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.

Well, that would be making the argument that a 276 rotor is a *problem* in and of itself.  I don't make that argument.  I make the argument that the main G60's shortcomings are found in the caliper and carrier/pin arrangement (floating).  Once resolved (change to fixed mount), I can start agreement with you on the above statement.

Scott Justusson