Mike Wills wrote:

Ken,

  I wanted to keep everything under the cowl so yes, the radiator will be
located under the engine. Due to the motor mount configuration, the
confines of the narrow RV4 cowl, and the fit of the various systems I wasnt
able to use as large a radiator as I would have liked. The core is 14" X
20" X 2". In hindsight I could have made some changes to the motor mount
design that may have allowed a little more core area, but not much. Another
thing that creates a space problem is my desire to eliminate the cowl
cheeks and go with a cowl design similar to Everett Hatch's RV4.

  While not the large, thin low drag design recommended by others on the
list, it should be sufficient to do the cooling job for my anticipated 160
- 180 HP. An RV6 or an RV8 would be a much easier fit.

I think it is thin enough Mike. Are you taking air in at the bottom?
What does your duct look like in side view? Where does the air exit? 

Send us some pictures if you don't mind.
If they are too big to publish I can crop them a bit.

 Paul Lamar

  I could go on and on. If you want anything specific, or want me to sent
you some pictures contact me off list at:

willsm@spawar.navy.mil

Mike Wills

 
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