No it isn't Because no it doesn't.
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17 years ago
Terrible Screaming Noise
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17 years ago
Do you deny it shrinks when hot too ?
Graham
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17 years ago
Yes. It might shrivel, but not necessarily shrink. Can you say that for all rubber? Because tyres expand when hot, not shrink.
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17 years ago
Try playing a hair dryer on a rubber band. I didn't mean shrivel btw - I meant to shrink reversibly.
Not sure if it's only natural rubber or whatever. Synthetics may be different. It's something to do with molecule alignment AIUI.
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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17 years ago