cooling systems

W.D. McKinney dee at
Wed Nov 5 23:28:43 UTC 2003

On Wed, 2003-11-05 at 13:31, Joe Abley wrote:
> On 5 Nov 2003, at 15:42, Eric Kuhnke wrote:
> > For those who have never visited Fairbanks, there is a phenomena 
> > observed at -15C and lower known as "square tire". The rubber in tires 
> > of parked vehicles will become stiff and freeze into position, making 
> > the vehicle impossible to move without destroying the tires.
> The coldest recorded temperature in North America was -63C in Snag, 
> Yukon on 3 February 1947. On the same day, in Tanacross, Alaska, -59.4C 
> was recorded.

Of course there have been times that my wife has dropped the temperature
below -63C with one of her looks :-(


> -15C is a normal daytime winter temperature in Southwestern Ontario; a 
> very cold day might approach -30C. There are a fabulous number of 
> places in Canada where the temperature remains below -15C for weeks and 
> months at a time. I haven't been here (in Southwestern Ontario) that 
> long, but I think if there was some danger that tyres would rip off my 
> wheels when I drove off in the morning, someone would have tried to 
> sell me something by now.
> It is hard to believe that tyres used in Alaska would cease to be 
> useful at only -15C. That's not even cold, really. Shirt and sandals 
> weather.
> Joe

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