Next I want to make a round hole at the cowl near the

 > fan hub, that is shown in the second photo drawn in.
 > I am going flying in the morning and taking pressure
 > measurements with an airspeed indicator before I change
 > anything, so I have before and after data.
 >
 > --
 > Perry Mick
 > Duckt N7XR
 > http://www.ductedfan.com

Also, if you smear lines of dirty oil on the cowling, you may be surprised at
the direction the air flow is going, this has been a useful diagnostic on
some planes at our local airport.

Bill Schertz
KIS Cruiser #4045

 
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