REFLECTOR: Engine cooling NACA scoops

[mike.roberts at kennametal.com]

My plane (2003 vintage XLRG w/ IO550) has the NACA scoops on top of 
fuselage and vortex generators just in front of each NACA scoop opening. 
It works extremely well (maybe runs too cool).

I didn't build the plane so I don't have any templates to provide you.

Mike W Roberts
Director of Sales, Americas
Metalworking Solutions & Services Group
Kennametal Inc.
1662 MacMillan Park Drive
Fort Mill, SC 29707
Office 803-578-4590
Cell 843-597-2293
email: mike.roberts at kennametal.com

Imperfect action is better than perfect inaction....DO IT NOW...






Dave Philipsen <velocity at davebiz.com> 
Sent by: reflector-bounces at tvbf.org
07/17/2008 08:14 AM
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REFLECTOR: Engine cooling NACA scoops






I have been struggling with marginal cooling on my STD FG equipped with 
armpit scoops.  The only way I can keep cool enough during cruise is to 
fly above 6000 feet and run LOP.  I have been somewhat successful at 
bringing the temps down by repairing/reworking the baffling and seals as 
well as doing a little rework on the scoops themselves but I'm still not 
happy with it.  I'm seriously thinking about retrofitting it with the 
overhead NACA  vents and downdraft cooling.  My question is:  Does 
anyone have templates that I could borrow/acquire so I don't have to 
guess about the size and positioning?  Also, should I expect to see a 
small improvement in cruise speed with the NACAs after removing the 
armpit scoops?

-- 
Dave Philipsen
Velocity STD-FG
IO-360
N83DP

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