This is the way I would do it. Louvers in the cowl of course.
Not shown yet. Make a good air racer.
--
Paul Lamar ...No rotor no motor.

Hi Paul,
have to confess I love your drawings.

How would you integrate a air scoop in a configuration like this?
As I remember the tubes have to have 20 inches for 7500 RPM.
Could one swing the tubes backwards instead of upside to get the needed
length?

Kind regards
Thomas

I was think a ramp slot just above the spinner.
Something like this.


--
Paul Lamar ...No rotor no motor.

-
Paul, I like the cowl shown on the RV-4 at the bottom of Powersport's web
site. Do you know about this airplane? How the cooling and induction is
set up? I understand they use an oil/water heat exchanger. Is that
effective or efficient?
Matt Olson

I have no idea. I think the airplane was destroyed in
non rotary involved crash.

Oil water heat exchangers are not effective or recommended
for aircraft use. Read http://www.rotaryeng.net/how-to-cool12.html


"A fundamental factor in the process of heat transfer is the difference
in the temperature of the two mediums. The rate of heat transfer in any
heat exchanger is proportional to this temperature difference. In an
OIL TO WATER heat exchanger this difference could be as little as 10
degrees Fahrenheit. Water 220 oil 230 degrees F. In an OIL TO AIR heat
exchanger this difference is usually about 100 degrees F or more.
An OIL TO WATER heat exchanger adds to the water cooling problem
and reduces the margins of safety between normal operation and
unstable operation. (Bulk coolant boiling)."

Paul Lamar ...No rotor no motor.

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