Hi Marv and other rotorheads :-)
Just received the fibreglass louvers from Lancair. They are a nice piece of
work which should work very well. Anybody else considering additional exit
opening area, I recommend them as a good find.
I just waxed them up and tomorrow I'll make a mould off of it (sshhh, don't
tell Lancair) as I'd like to make a spare one to experiment making a sliding
damper on the inside, very similar to the ones found on the air inlet vents
on the hood of my snowmobile. These are typically kept closed when riding in
fine, dry, powder snow, then opened for riding in heavier, wet snow. But I
can envision the same idea on the these louvers, operated as cowl flaps. But
just in case I'd rather make a copy to try it on.
Thanks for the good tip.
S. Todd Bartrim
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

   "Whatever you vividly imagine, Ardently desire, Sincerely believe in,
Enthusiastically act upon, Must inevitably come to pass".