"Sid Knox" wrote:
At this point, I think a test by temporarily fastening some scoops to
the tops of the existing NACA ducts (as Corky posted above) is
relatively easy to do and may disclose a lot.

Be certain that the temporary scoops are well attached. Losing a scoop in
flight is almost certain to cause it to pass through the prop disc, turning
an interesting experiment into a way-too-exciting flight.

Russell Kent