Mailing List flyrotary@lancaironline.net Message #1667
From: Ken Welter <rotary.coot@verizon.net>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: coolant / thermostat
Date: Mon, 19 May 2003 19:36:47 -0400
To: <flyrotary>
 Here is a photo of a modified thermostat that I have used when flying in hot weather.
 I used this in the early days of flying but after getting the cooling system working good I don't use it any more but carry it with me when I know I will be in 100 plus weather.
 It only made about a 10 degree drop in temp and the thing I didn't like about it was when descending in cooler weather the temp would drop off the scale.
 A thought is to install a bypass valve to open up the cooling wide open when needed and it would also serve as a backup incase the thermostat would fail.
 Also I also drill a weeper hole like Tommy James mentioned however I only drill a 1/8 inch, I found it helps keep air pockets out and I like keeping a wee bit of water flowing to help keep the radiator from freezing when descending in cold weather.

 Ken Welter
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