Here are a few photos of the air scoop, which is still in progress. The
 side shot shows the exhaust outlet and the inner part of the scoop.
 There are some aluminum panel pieces which complete the outter part of
 the scoop, they are not installed in this photo.

 There is a shot or two from the rear showing the outlet of the heat
 exchangers. On the left is the oil cooler, and the griffin radiator is
 on the right. I intend to put a large cowl flap there, hinged at the
 bottom and operated with a linear actuator.

 Looking at the interior of the scoop from the front, you can see that I
 have to do some streamlining to smooth the flow inside the scoop. I
 don't think that will be too problematic.

 Brian Trubee

 I would forget the cowl flap. It could easily hurt rather
 than help. Fly it with out it for now.

 When you have the scoop off please take a few more picture
 from a 3/4 view. I cannot see that much straight on.

 I suspect you will need a boundary layer bleed like a P-51
 but maybe not. Build yourself a water manometer and check
 the pressure above the rad when you are running it up
 on the ground with the tail anchored.

 Paul Lamar

It does have a boundry layer bleed. It might be hard to see, but the top
edge of the inlet is about 1 1/2 inches below the fuselage bottom, with
a splitter just behind the front edge to move the air to the sides. I
thought I sent a side view- here it is again.  The scoop is not
finished, there are three pieces, one on each side and the bottom of the
scoop. I have fabricated them but just need to fasten them all together
and also make a vertical support which will tie the top and bottom of
the scoop together so that air pressure does not deform it and try to
make it "round". I was lucky to crawl under a P-51 that was parked on
the ramp last month and saw that they had incorporated the same feature-
a support that ties the top and bottom of the scoop together. It's just
a small strip of sheet metal that runs top to bottom parallel to the air
flowing into the scoop.

Brian Trubee

OK I see it now. Is that a wide oval intake scoop or round?

Paul Lamar