Depends on your goal. If your goal is to look phat, I'd recommend slotted. A little less common than crossdrilling. If your goal is performance, I'd recommend neither. Slotting and crossdrilling was
Anyone know of a source? It seems that the ones I've checked don't go back past '88 Civics. Should I look for slotted, crossdrilled, or both? And why? Charlie Davis /// unsubscribe/change address req
What's wrong with plain jane, old boring stock, undrilled, unslotted rotors? Really? With flat rotors there's more surface area for the pads to bite on and more material to wick the heat away from th
Author: Andrew Schmiechen <aschmiechen@discovercolor.com>
Date: Fri, 28 Jun 2002 08:39:22 -0500
Don't look for either. Find yourself some Brembo blanks and be done with it. The slots/holes won't do anything for you in autocross and on the track they become weak points for the rotor to crack aro
There is a source out there. I saw it in the latest Sport Compact Car if I'm remembering correctly. I'll check and let you know, but there is definitely a source for them... Mike King 86 Civic SiR SM
Slotted rotors: keeps gas released from rotors/pads under high temperatures from creating a "hydroplaning" effect between said rotors/pads. Drilled: more surface area for heat to dissipate. Will ///
Just for the sake of argument/education: temperatures == So why do so few (if any?) of the major car manufacturers install them then? How many real race venues allow or use them? == Yes but, less mas
Drilled: more surface area for heat to dissipate. Drilled mens less mass in the rotor to absorb heat, thus less braking force. The holes no matter how they're made lead to cracking which shortens se
Slotted is legal in vintage, PCA & SCCA. Don't know about others. At least for 911's the default replacement rotors are slotted. The machine work is very inexpensive for sloting if the shop is alrea
Author: Andrew Schmiechen <aschmiechen@discovercolor.com>
Date: Fri, 28 Jun 2002 11:19:56 -0500
Oh boy, I've had this discussion before... I don't have all the physics details, nor do I care to look them, but here's a brief summary. A rotor has a couple of different jobs to do in the braking pr
How about reduced unsprung, rotating weight? Rotors are a lousy place to have weight, provided you still have enough braking power. If the reduced surface area and heat capacity of drilled/slotted ro
Author: Andrew Schmiechen <aschmiechen@discovercolor.com>
Date: Fri, 28 Jun 2002 11:45:22 -0500
That would be the legitimate reason to use rotors will holes in them. It's the only reason I can think of the Porsche still uses them. However, the holes are most likely cast in the rotor, rather tha
== Agreed, especially on Mod cars where every little extra ounce is detrimental to optimal performance. But how about on production cars/sedans???? Take a look at what a friend of mine made for a CM
<<How about reduced unsprung, rotating weight? Rotors are a lousy place to If lower weight is the goal you'd want smaller diameter rotors. It's the same reason we use tiny clutches and remove weight
You are correct. The "drilled" rotors supplied as OEM on P-cars have the holes cast in them. However, they still suffer from cracking around the holes. Fortunately, the cracks don't really get too b
Author: "Robert D. LaMoreaux" <Rob_LaMoreaux@compuserve.com>
Date: Fri, 28 Jun 2002 16:25:03 -0400
Back in the '60s this was true, but if you check with the premium pad manufacturers they will tell you that the current pads do not off-gas enough to create any need for gas release mechanisms Actua
Okay, I'm convinced, I'll look for other places to spend money... CHD /// unsubscribe/change address requests to majordomo@autox.team.net or try /// http://www.team.net/mailman/listinfo /// Partial a
All I need to know, is that the 3500lb NASCAR cars don't use them at Martinsville, or Sears Point. If solid vaned rotors don't bother them, they certainly won't bother me. Mike /// unsubscribe/change