Reply-To: <jimsol@thenuthouse.com>
From: "jimsol" <jimsol@thenuthouse.com>
To: <lancair.list@olsusa.com>
Subject: Re: Engine cooling
Date: Tue, 20 Oct 1998 19:55:03 -0400
Mime-Version: 1.0

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First..I'd like to thank all those who responded to my oil cooling
problems.
However, I failed to mention that I was NOT in the
building/testing/redesigning
phase of my plane.  I have 80 hours on it, and up till approx. 10 hours
ago, 
everything worked fine. I attributed my heat problem to an ungodly Florida
summer,
and thought some additional cooling techniques would surely help. However,
after further investigation and observation, I find my temperatures getting
worse.
After flushing the oil cooler and lines, checking the calibration of the
oil temperature
gauge and probe, and testing the vernatherm, along with other opinions, the
finger
seems to be pointed towards an internal engine problem e.g. cylinder wall
degradation
causing blow-by. However, this is unproven as yet.

Two things I'd like to mention...the idea of a louver vent in the lower
cowling, to aid in
the scavenging of air is something I'll probably employ in the future.

Secondly, there were several opinions concerning the positioning of my oil
cooler
NACA scoop on the top of my cowling.  I tufted my cowling around the scoop,
and went
for a flight.  The yarn adhered to the cowling surface,  AND the two pieces
on either side
of the scoop actually pointed IN towards the sccop.  The benefit of the
scoop on
the top of the cowling is that there is only 1 90 degree turn down to the
cooler. (Every time you
'turn' air, it loses some of it's efficiency).  It worked fine.  Believe
me.

Jim Solensky