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#21
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brake pads
Lanny Chambers > wrote:
>In article >, > "Mal Osborne" > wrote: > >> Unless your brake pads have been granted some sort of exemption from the >> laws of physics, this can not be true. Brakes dissipate kinetic energy, as >> heat. This is dependant on mass & speed. A given stopping scenario has to >> generate the same amount of heat, regardles of brake material. > >But he said he changed the pads so he could brake more aggressively. So >it's not "a given stopping scenario," but one that generates more heat >than before. Right. But I think Mal was referring to the statement "they [the EBC pads} generate more heat." That seems not likely; it is the change in usage that generates the heat. I would think they would surely generate *about* the same amount of heat under equal usage whatever material is used. There could be differences due to various reasons, however, so if there is a *significant* cause of difference, let's have it. >The OEM pads are fine for most street driving, but on the track they >require management to prevent fade from overheating. Heat-resistant pads >permit heavier use of the brakes over a longer period of time--it's not >a matter of not generating more heat, but of tolerating it without fade. Leon -- Leon van Dommelen Bozo, the White 96 Sebring Miata .) http://www.dommelen.net/miata EXIT THE INTERSTATES (Jamie Jensen) |
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#22
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brake pads
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#23
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brake pads
nobody > wrote in
: > P.S. do cross drilled rotors do anything besides > make a miata look more like a porshe? The theory is that drilled rotors will "clean" the brake pads, removing sand, grit, small stones, etc. and prevent the rotors from becoming scored by grit. It works very successfully on motorcycles. |
#24
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brake pads
In article >,
nobody > wrote: > stock is ok but if I do the work I like to > go beter For the street, Mazda OEM pads are the best compromise of longevity, noise, fade, dust, and rotor wear. >P.S. do cross drilled rotors do anythind besids make > amiata look more like a porsha Nope. Plus, cheap ones are prone to cracking. Even Porsche only uses them because they look cool. Same for slotted rotors. If you want to improve your brakes, flushing the entire system at least once a year is worth doing. So is regular maintenance of the slider pins. -- Lanny Chambers '94C, St. Louis http://www.hummingbirds.net/alignment.html |
#25
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brake pads
On Fri, 03 Feb 2006 14:31:25 -0700, XS11E >
wrote: >nobody > wrote in : > >> P.S. do cross drilled rotors do anything besides >> make a miata look more like a porshe? > >The theory is that drilled rotors will "clean" the brake pads, removing >sand, grit, small stones, etc. and prevent the rotors from becoming >scored by grit. > >It works very successfully on motorcycles. The real non-cosmetic reason for drilled discs on motorcycles is to prevent "wet fade", where the pucks hydroplane on the wet disc until they finally scrape off the water and begin to grab. This does not take very long, but you have no idea how long a couple of seconds can feel until you grab a handful of front brake and *nothing* happens. Some models of Miatas with certain wheels are supposed to have this problem. I have never experienced it with my '99 with stock 15 inch wheels. |
#26
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brake pads
to correct someones thoughts on "in theory"
A miata does not need drilled or slotted rotors, but the holes are for cooling, and the slots will actually shave off brake pad material so that the pads never get a glazed surface. Very heavy, and/or very fast sports cars will benefit from them, and slotted rotors really are designed for use with certain pad materials. "Natman" > wrote in message ... > On Fri, 03 Feb 2006 14:31:25 -0700, XS11E > > wrote: > >>nobody > wrote in m: >> >>> P.S. do cross drilled rotors do anything besides >>> make a miata look more like a porshe? >> >>The theory is that drilled rotors will "clean" the brake pads, removing >>sand, grit, small stones, etc. and prevent the rotors from becoming >>scored by grit. >> >>It works very successfully on motorcycles. > > The real non-cosmetic reason for drilled discs on motorcycles is to > prevent "wet fade", where the pucks hydroplane on the wet disc until > they finally scrape off the water and begin to grab. This does not > take very long, but you have no idea how long a couple of seconds can > feel until you grab a handful of front brake and *nothing* happens. > > Some models of Miatas with certain wheels are supposed to have this > problem. I have never experienced it with my '99 with stock 15 inch > wheels. |
#27
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brake pads
"Kevin Anderson" > wrote in
: > to correct someones thoughts on "in theory" No correction needed, the reason I gave was the correct one. Cross drilled rotors contribute less to cooling than to preventing scoring from grit caught in the pads. The difference on motorcycles is very apparent. |
#28
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brake pads
XS11E > wrote:
>"Kevin Anderson" > wrote in : > >> to correct someones thoughts on "in theory" > >No correction needed, the reason I gave was the correct one. Cross >drilled rotors contribute less to cooling than to preventing scoring >from grit caught in the pads. The difference on motorcycles is very >apparent. I do not seem to have any authoritative stuff on rotors myself, but it might be interesting to see what Tirerack says. Like Lanny says, OEM replacement slotted and drilled rotors seem to be mostly for appearance: "While grooved, drilled and slotted rotors offer an enhanced appearance and add some resistance to the boundary layer of gasses that can build up between the pad and rotor, ..." http://www.tirerack.com/brakes/tech/...currentpage=86 Which does not mean that I do not take your word for it that they can be effective in scraping off dirt and water. Other interesting links: http://www.clubcobra.com/showthread.php?t=48099&page=2 http://www.baer.com/Support/FAQ.aspx#1 http://www.wilwood.com/Centers/Infor..._answer/07.asp just to correct someone's thoughts that drilling is done for cooling. Leon -- Leon van Dommelen Bozo, the White 96 Sebring Miata .) http://www.dommelen.net/miata EXIT THE INTERSTATES (Jamie Jensen) |
#29
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brake pads
99-00 with 15" wheels. Has to do with pad pressure on rotors with brakes not
engaged. Evidently, a tolerance buildup can cause the problem. Might also be due to combinational things, like sticky caliper rods and rotor surface smoothness. I had the problem with stock pads. A pad replacment with non stock pads made the problem go away. Finally, the shields were replaced with the "improved" version, and I went back to stock pads. The nonstock Hawk pads wore rapidly, and made a mess of the front wheels every few days. The Hawk pads did seem to have slightly less fade than stock, although the brake pedal force needed was slightly higher hot or cold.. > Some models of Miatas with certain wheels are supposed to have this > problem. I have never experienced it with my '99 with stock 15 inch > wheels "Kevin Anderson" > wrote in message ... > to correct someones thoughts on "in theory" |
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