Paul,
 I measured the firewall dimensions for my Lancair ES today.  It is 46.5"
 across and 31.5 high at the firewall, with a 14* aft tilt.  The 31.5"
 measurement is a verticle measurement, measured straight up from the lower
 lip of the firewall.

 I also cut some D-shaped cardboard templates to see how the new design
 might look.  I took some pictures, but left the camera at the
 airport. Actually, I like it better than the stock cowl inlets.  There's
 room down either side for a 19" x 28" x 2" radiator.  I feel that I could
 modify the existting cowl using foam and glass.

 Mark S.

 Great Mark I'll adjust the cowl 3D's. Jarret has offered to
 machine a 3D foam buck for a new cowl mold. He has a huge NC machine
 he built himself. One of these days he is going to send me pictures.

 Paul Lamar
 --


OK, let me know what he says.  What other dims do you need for the cowl 3D?

Mark

I think I have everything I need right at the moment. As a check
on interference a sketch of the cross section of the cowl right where
the fly wheel would go seems to be the area that causes the most
problems. Mock up the side rad in that area.

Paul Lamar



I was out at the airport again today and measured the upper firewall joggle
(trailing edge of the upper cowl) to the prop flange to be 51".  I'll have
to take measurements at the flywheel next weekend.

I also built a one tube manometer and measured the cowl pressure at cruise
(160TAS).  With the cowl flap closed it registered 5.5", with the cowl flap
open, it was 3.5".  Sounds to me like I could use more exit area.  What do
you think?  BTW, gatorade works great if you don't have any food coloring.
:-)

Mark S.

Good work Mark? What color Gatorade?
More exit area never hurts if you have a cowl flap :)

Paul Lamar