Jerry Hey wrote:

Hi Paul,   I'm looking for expert commentary from the members of this
list about the cooling scheme in the attached drawing.   There is
nothing about it that cannot be changed.  In particular I am
interested in hearing more about cooling drag as related to inlet
size.  Are the suggested  inlets too big or too little?  Do I need a
bell shaped lip on the inlets?  How about the shape of the rad
plenum.  As you can see, I have heeded some of the advice you offered
months ago particularly with the exhaust flaps under the stab, which
I have grown to like.  BTW, the oil cooler will be located in the
engine cowl under the drive.       Jerry

Just a few minor improvements in red Jerry. You might want to go up
to 10 by 4 for the openings. The boundry layer bleed space should
be at least two inches below the fuslage skin. When the flaps are closed
the air will bypass the opening.

Paul Lamar

Charlie and Tupper England wrote:

Why not place the rad perpendicular to the airflow, since
there seems to be room in the tail. Then the air would have
two fewer sharp turns to make.

Charlie England

That will work of course but then you have to make the bell shapped 
diffuser duct. A simple 2D wedge duct as Jerry shows here works pretty good.

Paul Lamar
 
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