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Mark,
Thinking about building cowl flaps, based on worse
case scenario, into the design of the bottom cowl. My oil cooler and
radiator are going on the bottom, side by side, oil on the cool side of the
engine. The flaps going across the bottom would be there all the time, non
adjustable. No thermostat. I'm also planning on putting a way to
bleed off air from the back of the duct work going to the radiators. It
would be operated by a vernier type of control for those days when it gets too
cool (when the skis are on). Also putting a little bit of lip on the bottom
of the cowl where it meets the firewall to help take some of the heat
from the turbo out. With the Drag Queen being a tail dragger it will also allow
air to get out of the front of the cowl openings when on the ground. It may have
more drag to it then what you may want tho.
If you or Tom end up with a prop that doesn't work
for your fast planes, let me know. Thinking whatever is the lightest and
electric.
Can't wait to hear a 20b running. Taking a real
flight to Tracy's this year?
Barny
MGDQ 20bt
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