>I instaqlled two 2 1/2 x 4" counter balanced
flapper
>valves on the top cowl of my 0-320 that close
between
>800-1000 rpm from plenum pressure. You'll be
surprised
>by the reverse thermal airflow at shut down.
>
>Hurant Karibian

I have been thinking about heat soak for a while. It
is not high priority, just something that has been
on
the back burner.  Your solution seems so much more
eloquent than anything I came up with.  It is simple
and requires no pilot input.  Do you have any
drawings or photos?  What kind of plane is it on?
Can you see the flaps from the cockpit? What happens
to engine cooling if they stick open in flight?
--Sandy

I have a Thorp T18 and can see the flappers very
easily. Since they close so easily I can't see them
sticking open under flying plenum pressure.

Hurant Karibian


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