Re: So what is this "hot rotor warp" thing?
On Mon, 11 Aug 2003 10:29:40 GMT, "MasterBlaster" <Nobody's.Home@My.Place>
wrote:
>
>"alan" wrote
>
>> So I've heard of this problem with Hondas where the rotors can sometimes
>> "warp" when hot. I think I have this same problem too. When the rotors
>> are cold, I don't feel any shimmy in the steering wheel, but when I heat
>> them up I can feel it pretty bad. According to an article on stoptech,
>> most rotors don't actually bend, but just develop "sticky" spots. So my
>> guess is that my rotors aren't actually bent, but somehow the sticky
>> spots get stickier when the rotors get warm. Does that sound
>> reasonable? Are OEM brake pads abrasive enough (when cold) to scrub
>> away this sticky spot?
>
>Not "sticky"... more like "softer" or "harder" spots where the metal's grain structure
>is different. After all, most of the cheap rotors are made in the back of a shack in some
>third-world country where they melt down old cars, tin cans, broken AK-47s, or whatever
>they can find. I very much doubt the metal is "pure" anything all the way through, or that
>they properly cool them after casting to minimize distortion.
>
>A few months back, I ordered some rotors. Right out of the box, I found 5 or 6 ventilation
>holes right next to each other were still 1/3 full of casting flash that I couldn't chip out, the
>internal fins were mismatched, like they didn't get the casting molds lined up properly, and
>the vent slots wobbled, though the friction surface was straight (the only machined area).
>
>The second set were the same, except that on both of these rotors, one surface was
>already covered with rust.
>
>We changed brands.... clean, dead-straight, fully-machined, perfectly matched cores.
So - you're not going to tell us what the good "brand" is?
Rgds, George Macdonald
"Just because they're paranoid doesn't mean you're not psychotic" - Who, me??
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