Here is a picture of Ted Mayfields Wankel rotary
powered Hyperlite. Since this picture was taken
the prop was spaced out a couple of inches and the
lower pulley hole in the cowl was covered over. The 
intake duct was cleaned up a little in the process
with a little less back pressure in the cowl. 
The scoop is still merely a piece of bent aluminum. 
No radius on the lip. No boundry layer bleed.
Chuck Harberts horzontal rad (one of two in the airplane)
is fed by the same type of simple and crude scoop. 

As you see it in this picture the engine cooled fine.
It cools even better now.

mayfirad.jpg

Paul Lamar
 
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