From: TheWireGuy@aol.com
Message-ID: <4a8dcef4.251bd88a@aol.com>
Date: Thu, 23 Sep 1999 15:24:58 EDT
Subject: Re: Erring OAT's;  aileron trim tabs
To: lancair.list@olsusa.com
Mime-Version: 1.0

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In a message dated 9/23/99 9:39:13 AM Central Daylight Time, 
CIC@centurytel.net writes:

<< The probe is presently mounted so
 it sticks downward near the top of the nose gear fairing, more or less at
 bottom center of the lower cowl assembly.  Looks like it's right in the air
 stream.  This is the second location I've tried; the first was just inside
 the air intake -- same results.  I've double-checked the plug, but can't see
 any problem.   Perhaps heat is being conducted from inside the engine >>

Sounds plausible, I've always put them under the wing, outboard of the 
prop-wash and out of the sun. Another cause of errors is the use of a 
non-standard splice or connector in the thermocouple wire that the system is 
not calibrated for. The connection could act as a second thermocouple, in 
series with the temp probe, and could affect the reading. I would suspect 
that your location is the culprit however.
Jim McMillan
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LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html