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Old 07-20-2006, 09:46 PM
melissa melissa is offline
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Default Whats the differnace between Cross Drilled, sloted and "atom" pattern Rotors?

Whats the differnace between Cross Drilled, sloted and "atom" pattern Rotors?


Ok.. noobie question....

but whats the differnce. I've had stock Brembo, the "atom" patterns and right now i have Drilled and sloted rotors on my golf.... They all feel the same to me. I get the cooling down part of the drilled.. but other than that, what the differnce?
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Old 07-20-2006, 09:53 PM
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For what I know....All of those types of "cuts" promote cooling of the brake rotor..."slotted" as it is often called is the way to go for a track/Auto x application, where as "drilled" will still help dissipate heat, but are mainly for show, but are NOT recomended for racing....yes I know the C6 and AMG Benz' have these rotors, again, all for show....the holes drilled into the rotor weaken the rotor.........
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Old 07-20-2006, 09:58 PM
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Quote:
Originally Posted by melissa
Whats the differnace between Cross Drilled, sloted and "atom" pattern Rotors?


Ok.. noobie question....

but whats the differnce. I've had stock Brembo, the "atom" patterns and right now i have Drilled and sloted rotors on my golf.... They all feel the same to me. I get the cooling down part of the drilled.. but other than that, what the differnce?
Cross-drilled is primarily for show, and isn't even generally used on race cars anymore. The primary purpose for this was supposed to be for improved cooling and reduced weight, but its cooling properties are disputed, since airflow through a ventilated, directional-vaned rotor may be disturbed by the addition of drill holes. Weight reduction is extremely minor, so it doesn't warrant the risk of the rotor cracking around the drill holes, as is the case when driving the car to the limit at a track day or downhill canyon run.

Slotting on the surface of the rotor is much more of a performance-enhancing option. Braking slows the car by turning motion into heat, by squeezing the brake rotors between a pair of friction-producing pads. This produces hot gasses that can theoretically form a layer between the brake pad and rotor that prevents them from making as much contact, resulting in lengthened braking distances. Slotting the surfaces of the rotors gives the gasses channels through which they can escape, allowing the brake pad to retain maximum contact with the brake rotor. The downfall of slotting is that, along with gasses, a slight layer of glazing and brake pad material is sheared off of the pad with every passing slot, so some drivers report slightly reduced pad life.

Atom-pattern slotting is really just for show, since regular slanted slots produce the same effect as an atom pattern.
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Old 07-20-2006, 10:16 PM
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Slotted for my Mini once the free service runs out.
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Old 07-20-2006, 10:22 PM
Slow Paul Slow Paul is offline
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Yeah, I got cross drilled cuz they were at a unbeatable price....hey, they look good....right???......Gonna go with Power Slots next though.......
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Old 07-20-2006, 10:22 PM
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Quote:
Originally Posted by Bruiser
Yeah, I got cross drilled cuz they were at a unbeatable price....hey, they look good....right???......Gonna go with Power Slots next though.......
All good, just don't take 'em to a track day unless you plan on replacing them there!
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Old 07-20-2006, 10:41 PM
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Quote:
Originally Posted by iDiaz
All good, just don't take 'em to a track day unless you plan on replacing them there!
The power slots????? really....... what would be a good performance rotor then????
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Old 07-20-2006, 10:41 PM
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Nono, I meant your existing cross-drilled rotors. Powerslots are teh goods!
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Old 07-20-2006, 10:42 PM
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OHHHHHH ok!!!!!!!:woot2: Gotcha!!!!
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Old 11-17-2006, 01:48 PM
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what about the slotted holes?

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