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Re: I'm going to disagree (with the myth part) Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 13 Jan 2005 12:57:33
In Reply to: Re: I'm going to disagree (with the myth part), TML   [Profile/Gallery]
, Thu, 13 Jan 2005 11:57:57
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I didn't examine the rotors with a microscope, but I saw no evidence of pad material bonded to the steel surface.
Does steel warp easily? You bet. Here's some other fun bits to back up that rotors do indeed warp-
The thinner the rotor, the more easily they warp. The thinner the rotor, the hotter they will get, in terms of not having the thermal mass to throw off heat. Now, one could assume that a hot rotor would be more likely to 'burn on' pad material. However, as I have never seen this pad material on the rotor during visual inspection, the bonded pad material would have to melt on and be the exact same color and texture as the steel rotor. Highly unlikely.
For the first few years of Sable / Taurus production, the rotors would warp. I know, because I was the unfortunate owner of one (my only domestic car). Every six months the rotors would warp; I'd get one turn out of them, and then they'd warp again. At that point they were to thin to turn, and I'd put in new. About three years into this, mysteriously, the rotors didn't warp. I was using the same brand of brake pad. Now, they could have fixed the design flaw that caused the rotors to warp, or they changed the brake pad desin to one that wouldn't bond. This was 1990. If bonding was a problem, I figure this miraculous descovery would be on all pads by now, 15 years later.
Yes, rotors warp. You can measure the runout with a gauge - I've done it. It doesn't take a lot; a few ten thousanths is all it takes to give some pretty major pedal pulsations. And brake rotors get hot - very hot.
I daresay that a website and a logo does not make a theory a reality.
posted by 192.249....
, Wed, 12 Jan 2005 14:42:39, Thu, 13 Jan 2005 07:00:50, Thu, 13 Jan 2005 09:13:07, Thu, 13 Jan 2005 11:57:57, Thu, 13 Jan 2005 12:57:33 <-- Viewing This Message
, Wed, 12 Jan 2005 19:56:16
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