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Todd TCE
CEG'er

Reged: 03/19/02
Posts: 337
Re: Sorry to ask- Brembo slotted rotors new
#507517 (Re: Rara) 01/21/04 03:48 AM

Ok, so.....

http://www.reddotracing.co.uk

Scroll down now......you know if 1 is good, then 2 is always better.

--------------------
Less Bling, more Zing
Todd/TCE
www.tceperformanceproducts.com

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Andy W.Moderator
b0x @dm1n

Reged: 07/19/00
Posts: 4397
Loc: Columbia, MD
Re: Sorry to ask- Brembo slotted rotors new
#509677 (Re: Todd TCE) 01/23/04 01:13 PM

Sorry Todd,
But I would not take advise on this subject from a company that uses a x-drilled rotor in their logo.

-Andy

--------------------
Andy W.
The problem with America is stupidity.
I'm not saying there should be a capital punishment
for stupidity, but why don't we just take the safety
labels off of everything and let the problem solve itself?


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RogerB
Hard-core CEG'er

Reged: 10/21/00
Posts: 3867
Loc: Wichita, KS
Re: Sorry to ask- Brembo slotted rotors new
#509843 (Re: Andy W.) 01/23/04 04:58 PM

Well, you know how toilet paper never seems to tear off at the perforation. I guess they applied that theory to their rotors.

--------------------
Function before fashion.
'96 Contour SE

"Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998

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patman
CEG'er

Reged: 04/25/04
Posts: 103
Re: Slotted Rotors - Revisted new
#599727 (Re: fazzman2000) 04/27/04 05:49 AM

There are a lot of misconceptions about slotted and crossdrilled rotors. I have read many of the posts in this forum and feel that I can add some helpful information. I have been in the performance brake and racing industry for a number of years and this is what I have learned from my own experience and the experience of others. Slotted rotors and crossdrilled rotors have absolutely nothing to do with keeping the brakes cooler than stock rotors. The main advantage to using slotted or crossdrilled rotors is that they will allow the brakes to operate properly at a much higher temperature than will stock rotors. When brake pads get hot,(even the newer friction formulations) the resins that bond the friction material together develop rise to the surface of the pad and develop a gas. This gas will actually float the pad away from the rotor. The same theory which makes engine bearings last so long, there is never any metal to metal contact because there is a very thin cushion of oil separating the two parts. Generally if the brakes get hot enough, they will lose their effectiveness and a spongy pedal will usually result. This spongy pedal is caused by one of two things; boiling brake fluid or the fact that you are trying to compress the gas that is floating the pad away from the rotor. What slotting and crossdrilling does is to allow a path for this gas to dissipate, while allowing the pad to maintain a good, solid, contact with the rotor, thus maintaning effective braking. Slotted rotors accomplish this much better in everything except all out race cars because they generally have a much longer life expectancy than crossdrilled rotors. Crossdrilled rotors usually crack because when cast iron parts are drilled, stress risers are developed which generally develop cracks after many consecutive heat cycles which can ultimatly lead to rotor failure. Additionaly, crossdrilling removes significantly more friction surface area from the rotor than slotting does, allowing a lower braking capability over stock or slotted rotors. The only real advantage to crossdrilled rotors is the reduction of unsprung weight that they offer, which makes for a considerable handling advantage in all out race cars. And the cracking isn't an issue, because very few heat cycles are seen before the rotor is replaced. Slotting does everything that crossdrilling does, with the exception of the weight reduction issue. The only difference is that they very seldom crack, they do not eat the pads as fast as crossdrilled rotors, and because they have more friction surface and mass than a comparable crossdrilled rotor, warping and temperature are greatly reduced. I hope this helps anybody who is interested...feel free to email me if any questions come up @ pmccle3928@aol.com

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Andy W.Moderator
b0x @dm1n

Reged: 07/19/00
Posts: 4397
Loc: Columbia, MD
Re: Slotted Rotors - Revisted new
#602081 (Re: patman) 04/29/04 03:01 PM

Pat,
Your talking about extreme race situations. Not situation faced to street car owners or even auto-x car owners. Not to mention the materials used in those brakes are something that will probably never be produced for our cars.

-Andy

--------------------
Andy W.
The problem with America is stupidity.
I'm not saying there should be a capital punishment
for stupidity, but why don't we just take the safety
labels off of everything and let the problem solve itself?


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RaraAdministrator
"Absolut Rara."

Reged: 09/09/00
Posts: 3223
Loc: Westland, MI
Re: Slotted Rotors - Revisted new
#602089 (Re: Andy W.) 04/29/04 03:18 PM

Originally posted by Andy W.:
Pat,
Your talking about extreme race situations. Not situation faced to street car owners or even auto-x car owners. Not to mention the materials used in those brakes are something that will probably never be produced for our cars.

-Andy




No, pat is talking about real old school pad materials that outgas; not a problem with modern pad materials, even on the race track.


--------------------
Balance is the Key.

rarasvt@comcast.net

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NMC
New CEG'er

Reged: 08/22/00
Posts: 42
Loc: Winnipeg MB CANADA
Re: Slotted Rotors - Revisted new
#722585 (Re: Rara) 09/25/04 02:38 AM

I've had Powerslot's on the front (278mm) for over 4 years and 25k miles now. No warping or squealing, but a bit of a groan under hard braking. I put in new stock Ford pads with them and they are about half worn now. I see no problems in using them at all. The right one even survived a seized caliper for a few miles. I have had to clean the grooves every 6 months or so though.

--------------------
96LXV6 heavily un-modded due to family addition.
87Renault GTA convertible, chopped springs, Ford Premium Sound, but otherwise stock.


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Andy W.Moderator
b0x @dm1n

Reged: 07/19/00
Posts: 4397
Loc: Columbia, MD
Re: Slotted Rotors - Revisted new
#724022 (Re: NMC) 09/27/04 02:14 PM

25k Miles over 4 years is not heavy use, but I'm glad you are having success.

-Andy

--------------------
Andy W.
The problem with America is stupidity.
I'm not saying there should be a capital punishment
for stupidity, but why don't we just take the safety
labels off of everything and let the problem solve itself?


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CLASSVT
Hard-core CEG'er

Reged: 05/02/03
Posts: 1421
Loc: Music City
Re: Slotted Rotors - Revisted new
#1224632 (Re: Andy W.) 04/25/06 11:48 PM

I thought I'd add one more tid-bit of info. I've had my Powerslots for almost two years. Not once have they squeaked or squealed. I don't know if that is common with all slotted rotors, but it is nice to say the least.

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99 Black SVT -3L Hybrid w/.5mm overbore, Spec clutch/flywheel, MSDS, BAT intake, K&N open, 17'Konig Tantrums, DMD, Opt. TB & Y, Powerslots, Bassani w/ magnaflow res.
96 SE MTX- "The War Wagon"

"I'm in love with my car..."
-Queen

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