Thread: Slotted Rotors
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Old 07-26-2008, 09:07 AM   #8
EchoMirage
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Join Date: Feb 2007
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drilled and slotted are both useless for actual stopping. read up on the stickies on tech. years ago, 10 or more, pads were made differently, and produced gasses when under heave braking. the gas would actually build up between the pad and rotor like a cushion, called outgassing. thats when drilled/slotted rotors worked. now, pads, ALL pads (at least high performance ones) are made completely different. they dont make the same gasses which produce outgassing. now, all holes/slots do is take away from the surface area that you need for maximum braking.

the holes are prone to cracking, unless the holes are actually cast into the rotor, as apposed to just drilled through. the slots take away from surface area, hence reducing the effectiveness of the pads. the most youll see in actual race cars are some very slight, very shallow slots, or a wave pattern around the circumferance of the rotor. this is only to help clean the pad/rotor, or something to that effect.

case in point: when i went to the IROC auction, they had rotors on shelves. the short track rotors, made for constant braking from 100mph down to 40, over and over again, were solid, blank rotors. carbon fiber, yeah, but solid blanks.
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