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<< Lancair Builders' Mail List >>
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Some builders experience engine heat problems on climb out, but have
normal
temp at cruise, which is logical. If the cooling air intake or exit
(most
probable) is too small it must be enlarged to provide adequate cooling
at climb, which creates unnecessary drag at cruise so cowl flaps are
indicated, but the LC20s don't lend themselves to easy cowl flap
installation.
I'm wondering if anyone has attempted to design/install a variable
(cockpit or temperature controlled) air inlet to the cowling ?? I have
the 235 sized openings and am considering such a device since most find
they are too large in cruise. My thoughts are to use a butterfly type
valve controlled by VW temperture actuators. At OSH I've seen a variable
opening on Russian built airplanes which is like an iris on a camera. This is in front of a radial engine and thus the round design. Like Bill
noted the LC20 design make a cowl flap difficult to install... I invite
your thoughts. Earl
LML homepage: http://www.olsusa.com/Users/Mkaye/maillist.html
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