Reports from earlier Lancair builders suggested that the panel-mounted air vents provided insufficient air. 

 

Rob,

 

I’ll bet you already know this, but you may want look at the NACA duct detail on the LML Homepage.  I took extra pains to get my edges sharp and entrance curvature correct.   With the canopy closed and sealed on the ground I get a fair volume of air through both vents.  I don’t like the vibration of the canopy cracked open when taxiing.  In flight, it will blow your sunglasses off.

nacaramp.JPG Ben Owen's NACA ducts ramp construction illustration / Pat Weston naca-lip.JPG Ben Owen's NACA ducts inlet lip construction illustration / Pat Weston

 

Steve Colwell  Legacy