XPost: comp.mobile.android, misc.phone.mobile.iphone   
   From: xenolith@optusnet.com.au   
      
   On 16/5/2022 7:46 am, Andy Burnelli wrote:   
   > Andy Burnelli wrote:   
   >   
   >> If Amuzi is correct that warp (aka "thermal distortion") happens at a   
   >> lower   
   >> temperature than a thousand degrees for ten hours, then I'm all ears.   
   >>   
   >> Give me a fact, and I'll read it.   
   >> Does anyone have any reliable cites that back up their belief system?   
   >   
   > I realized belatedly that I didn't point out that the temperature it takes   
   > to "soften" rotors only has to be "locally" applied for what Amuzi is   
   > hypothesizing to occur, to occur.   
   >   
   > So, for example, you can perhaps get to the 2300 degrees it takes to begin   
   > softening rotors locally, but bear in mind rotors are _designed_ to cool   
   > off, so it's not going to be easily done, if it's even possible to be done.   
   >   
   > I get it that almost everyone trusts their intuition more than they will   
   > ever trust in facts, where I repeat I know Quantum Mechanics, where   
   > _nothing_ is intuitive. Trust me on that.   
      
   When people say *trust me*, it is far wiser to do the opposite.   
   >   
   > We humans own the intuition of monkeys.   
      
   You might, I don't. One of the things I do is *test* any *theory* I come   
   up with. Is the rotor warped? Intuition might tell you, my measurements   
   tell me what the reality is *on the ground*. I spent decades teaching   
   apprentices to *test* any diagnosis theories (or intuition) they come up   
   with. Never assume, just measure.   
      
   > That serves us well sometimes - but it serves us poorly most of the time.   
   >   
   > The reason it serves us poorly is that, sure, it "sounds good" that rotors   
   > would warp, especially when most of the time replacing or machining the   
   > rotors "solves" the warp, so, to most morons, it's intuitive it warped.   
      
   But to us *mechanics* who actually *measure the warp*, it is no longer   
   *intuitive*, it's *proven fact*. Facts are good.   
   >   
   > But the facts remain that you need an astoundingly huge temperature,   
   > whether applied locally or not, to force a rotor to deform like that.   
      
   Rotors never heat *uniformly*. In fact, it is the outer periphery that   
   will heat the most and it is the outer periphery that will begin to   
   deform first.   
   >   
   > The brake system can't handle that temperature.   
   >   
   > There are a few reasons for that, one of which is it never happens, but the   
   > more important reason is that the system is _designed_ to cool itself off.   
      
   Well done, and the cooling is *never even*.   
   >   
   > What I'm fighting here is the fact I'm not used to dealing with the hoi   
   > polloi who believe in a 20 second YouTube video of basically nothing,   
   > without even _reading_ the dozen or so reliable reference links I cited.   
      
   I don't consider myself to be a member of the hoi polloi and, in direct   
   contrast, I have seen and measured many such warped rotors as depicted   
   in the video. And, as in the video, I have *machined* countless rotors   
   *with warp* and measured, seen, heard and *felt* the same effects as   
   shown in that video and so many others.   
   >   
   > I'm not saying Amuzi is wrong, by the way - since his premise is valid that   
   > locally, the deformation temperature point might be reached in a typical   
   > braking system under duress...   
   > But what we need now is _science_ backing up his supposition.   
   > If you post it, I'll read it.   
   >   
   > More to the point, as with Vic Smith's reference, if I read it, I'll at   
   > least grasp what it says (using basic adult cognitive skills God gave me).   
      
   You screwed yourself on that last sentence.   
      
   --   
   Xeno   
      
      
   Nothing astonishes Noddy so much as common sense and plain dealing.   
          (with apologies to Ralph Waldo Emerson)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)