[TR] Fan Hookup

[wbeech]

David,
You are correct in your assumptions.  The temp does rise just after you shut
the engine off as there is no longer the needed circulation to cool the
fluif.  By this same reasoning, the electric fan will continue to run until
the temp is reduced to the pre-determined level.  

Many times in the summer I have walked through a parking lot and heard fans
running on smaller cars (new ones) that have just been parked and the
electric fan is still cooling.

Bill B
'58 TR-3A TS/30766 L
"I love it, she hates it... the car, of course!"
 

-----Original Message-----
From: triumphs-bounces+wbeech=flash.net at autox.team.net
[mailto:triumphs-bounces+wbeech=flash.net at autox.team.net] On Behalf Of
DLylis at aol.com
Sent: Sunday, November 11, 2007 6:06 PM
To: david.brister at wanadoo.fr; triumphs at autox.team.net
Subject: Re: [TR] Fan Hookup

I have owned many cars over the years in which the cooling fan continued to
run after the key was shut off.  Now, someone who knows a lot more  about
thermodynamics (?) may be able to tell me if this is correct or  not. If my
3A is running (when it was running, anyway) and the temp  was in the normal
range, when I shut off the car the temp would rise before it  would fall.  I
assumed this was because the coolant stopped circulating and  carrying heat
away from the block, and I think that is correct.  That would  seem to me to
be a reason for the electric fan to continue to run after the  motor is shut
off even though it is only cooling the fluid left in the radiator,  and any
circulation 
that is created by the temperature gradient.   Obviously the water pump is
not 
running.   
Someone who paid attention in class can jump in here.
David  Lylis
69 TR6 CC26160L
60 TR3A TS74461LO



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