Dennis, do you care to try your experiment again with a few

modifications? The blower effect should be independent of the prop blast

and air filter. On test (B), fit some sort of cone to the intake to

eliminate the sharp edge. I think that would compare equitably to a test

with the blower at the end of a SCAT tube.

 

What do you think, Al?

 

What you’d like for an intake where previously stationary air is being sucked in is at least a ½” radius of 90 degrees or more forming the ‘edge’ of the opening.  Beyond that I’m losing interest in this whole ideaJ.

 

Al