06-25-2012, 08:22 AM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
The aluminum hat section is a significant weight saving over a conventional rotor. Also if you machine your own hats it opens up a lot of possibilities for different offsets.
Also a lot of 2 piece rotors are also set up as floating. The rotor can move side to side a little independently of the hub. This means you don't feel so much brake shudder through the pedal as the rotors warp under extreme conditions. Its usually a race track only thing since the floating mounts are another wear point you really don't need on a road car plus they can be noisy.
Cheers
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Mike Murphy
Melbourne Australia
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