Mailing List lml@lancaironline.net Message #3182
From: Ken Harwood <kenharw@swbell.net>
Subject: RE: Tom Giddings on Air Conditioning
Date: Wed, 18 Aug 1999 07:51:00 -0500
To: Lancair List <lancair.list@olsusa.com>
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Yes, Tom.  There is salvation!  I installed A/C in my 360 this spring
and it works G-R-E-A-T.  Of course, one has to give up something in
order to do a cool 240 mph.  In my case it was my header tank.   Not a
biggie since my fuel system was designed to feed from EITHER the
header tank or the main tanks by way of a selector valve ( I never
liked having to pump all the fuel through the header tank because in
case of total electrical failure all useable fuel now becomes what was
left in the header tank).  So now I have only 42 gallons of useable
fuel.  On some trips I might have to make an extra enroute stop, but
who cares.  It will be a nice cool descent, landing and taxi.   And as
soon as the engine restarts for taxi out I have cool air again.  I
leave it on all the time the engine is running in the summer.

The header tank is the only really good place to put the evaporator
coils and fan, as they should be located in front of the pilot and
pas.  Air likes to go from front to rear on ANY airplane, so you want
the cool air starting out in front of you.  I mounted the condenser
coil behind the pax seat.  It is fed with a NACA scoop on the belly of
the plane.  Exhaust air is via a reverse scoop.  This arrangement is
very efficient with very little drag on the airplane.  In fact, it was
hard to notice any difference in cruise speed on my airplane,  maybe
two or three mph.

I would be glad to talk to you about the installation, Tom.  I live in
San Antonio, TX.
I think we have met before.

Ken Harwood,  N15KH


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