home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   rec.autos.tech      Technical aspects of automobiles, et. al      117,728 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 116,823 of 117,728   
   Alan to Andy Burnelli   
   Re: Empiricism trumps Arlen's idiocy (wa   
   15 May 22 14:45:06   
   
   XPost: comp.mobile.android, misc.phone.mobile.iphone   
   From: nuh-uh@nope.com   
      
   On 2022-05-15 2:36 p.m., Andy Burnelli wrote:   
   > AMuzi wrote:   
   >   
   >> Differential thermal expansion does not require entering the plastic   
   >> zone for the entire piece.   
   >   
   > Finally someone on this newsgroup is using their brain.   
   >   
   > It's disconcerting that most people completely ignored the dozen references   
   > I provided and that they provided, in turn, a 20-second youtube from a kid   
   > in NJ which shows absolutely nothing whatsoever - and yet they think it   
   > does.   
   >   
   > They may as well claim the earth is flat in a 20 second video from a kid in   
   > NJ who _proves_ it beyond any doubt in their (strange) low-IQ brains.   
   >   
   > Anyway, Amuzi brings up an _excellent_ point that you don't likely need the   
   > 2300 degrees it takes to _begin_ melting a typical cast iron rotor.   
   >   
   > But bear in mind even the best brake fluid boils off at well under one   
   > quarter of that temperate, and that the rubber in the braking system would   
   > be marshmallows anywhere near the "zone of thermal expansion" Amuzi alludes   
   > to, and we have what appears to be a situation which requires more data.   
   >   
   > At what temperature does a rotor 'soften' is key here, I think, isn't it?   
   > Isn't that what Amuzi is alluding to?   
   >   
   > Certainly if you leave the rotors on a steel rack at a thousand degrees for   
   > ten hours (which we learned in the paper Vic Smith referenced), they will   
   > "increase" their "distortion"; so I _believe_ what Amuzi is alluding to.   
   >   
   > However, nobody here is going to claim that their rotors spent ten hours at   
   > a thousand degrees and _then_ they declared that they warped, right?   
   >   
   > The brake system components (piston gaskets, fluid lines, fluid, etc.)   
   > would be marshmallows at even the "low" temperature of a thousand degrees.   
   >   
   > In summary, I get it that people _believe_ their rotors warped, and yet,   
   > I've _never_ seen anyone who said that who actually _measured_ it, and,   
   > worse, I found a dozen experts who claim it's impossible given the   
   > temperature required is greater than the brake system can handle.   
   >   
   > 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?   
      
   How about videos of warped rotors?   
      
   Will those do?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca