I have my new rad test box half built.
This time I am using the actual rad I will be using
in the airplane. It is sideways with a simple wedge shaped
duct. I will test it with and without three venetian blind type 
cowl flaps.  I moved it up further from the roof of the van to be
sure I had clean horizontal air. 

The opening is 5 inches high by 24 inches wide or 33% of the rad area.

My rad is a stock Howe Racing $200 all aluminum. 27 1/2 inches wide
over all. 24 inch wide core. 14 3/4  inches fore and aft core.
The core is 2.25 inches thick. 

Paul Lamar
 
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