[coldkilla]

Originally Posted by curt86iroc

FYI, mass does not transfer heat. the surface area of the pad and the material properties are the deciding factors in the heat transfer. that being said, drilled rotors will cool better because they allow forced convection via turbulent air flow to exist between the rotor and the pad. the holes cause the air flow around the rotor to "trip" turbulent. turbulent flow will always transfer more heat than laminar.

wow, where did you go to school? i thought that this was a basic element of brake theory that everyone understood but apparently not. the surface area of the pad has absolutely nothing to do with heat transfer in the manner that you are speaking of. the pad creates heat by rubbing against the rotor, turning friction into heat. the rotor, in turn needs to effectively handle this heat and dissapate it. THE MORE ROTOR THAT YOU HAVE, THE MORE HEAT IT CAN HANDLE BEFORE FAILURE AND IT CAN DISSAPATE THIS HEAT FASTER BECAUSE IT HAS MORE SURFACE AREA. once you start cutting holes and slots in the rotor, you are taking mass away and you now have less rotor. this is not opinion or conjecture, this is fact. someone made the analogy of boiling water. put just a small amount of water in a pot and boil it. now put a lot of water in a pot and boil it. the pot with less water will boil first because there is less water to soak up the heat. the same principal works with rotors, why do you think rotors are so damn heavy? they are made with enough mass to effectively soak up the heat and dissapate it before they become heat soaked and ineffective. as far as real world results, which is better, blah blah blah. i dont care, whatever makes you happy, just dont turn this **** into voodoo as its really quite simple.