Site News - 1/26 Vintage Saab Club of North America Magazine Feature
Date: Fri, 08 Dec 2006 17:24:53 +0000
From: Eeyore <rabbitsfriendsandrelationsnospamail.com>
Subject: Re: Terrible Screaming Noise


Elder wrote: > rabbitsfriendsandrelationsnospamail.com says... > >Elder wrote: > >> rabbitsfriendsandrelationsnospamail.com says... > >> >Greg Farris wrote: > >> >> rabbitsfriendsandrelationsnospamail.com says... > >> >> > > >> >> >Rubber *expands* when it's cold > >> >> > >> >> Ooops! > >> > > >> >It's the only substance that does AFAIK. > >> > > >> >Odd one that. > >> > > >> No it isn't > >> Because no it doesn't. > > > >Do you deny it shrinks when hot too ? > > > >Graham > > > > > Yes. It might shrivel, but not necessarily shrink. Try playing a hair dryer on a rubber band. I didn't mean shrivel btw - I meant to shrink reversibly. > Can you say that for all rubber? Not sure if it's only natural rubber or whatever. Synthetics may be different. It's something to do with molecule alignment AIUI. > Because tyres expand when hot, not shrink. Do they definitely ? Maybe vulcanising affects it ? Also what percentage is natural rubber these days btw ? The steel cords will certainly expand and I'll bet the steel will 'win' over the rubber so that might be the reason. Graham

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