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Dave
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 Posted: Sun Aug 05, 2001 2:39 pm Post subject: |
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I have added slotted rotors to my car and I am happy with them. But I was thinking When rotors get stotted they lose some surface area so wouldnt it make your braking Worse???? 
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MAS
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| Posted: Mon Aug 06, 2001 4:18 am Post subject: |
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I think the main reason for his is to provide extra cooling under repeated hard braking conditions, as in racing. I should think that there would be some penalty involved too, like a reduced brake surface area. I should guess that this would be a trade off. But most discs I've seen like this are usually pretty large anyway.
-MAS |
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numbers
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| Posted: Sat Aug 18, 2001 7:51 am Post subject: |
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The main reason for slotting the roters is for gas disapation, not cooling. As your pads heat up during braking, they give off gas just like wood in a campfire. This gas tends to build up between the rotor and the pad, reducing friction. Think of it as your brake pads hydroplaning. The slots in the rotor act as a path for the gas to excape, just as the grooves of a tire channel the water out to the side.
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924RACR
Joined: 29 Jul 2001
Posts: 8804
Location: Royal Oak, MI, USA
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| Posted: Tue Aug 21, 2001 5:03 am Post subject: |
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Yeah, but they have an adverse effect in durability of the brakes; they act a little like cheese graters to increase pad wear rate. At least they won't make the rotors crack like cross-drilled!
I don't have anything fancier than stock rotors on my racecar, not legal to use cross-drilled or slotted rotors.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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