Hi Guys,
Regarding ventilation, I installed both the Ultimate Ventilators and a
starboard side NACA vent in the vertical that feeds 3 overhead eyeball vents.
The key to getting the NACA vent to supply enough air to the eyeballs is to
provide a place for the incoming cockpit air to escape. If you don't do
this the cockpit pressurizes and you won't get much airflow. Without a place
for the air to escape, the faster you go the less air comes in. It doesn't
take much to pressurization to override the intake pressure of the NACA
vent.
I installed a plastic vent grille in the bottom center of the baggage bay
"D" access panel. The grille was found here:
_http://www.rockler.com/product.cfm?page=5228_
(http://www.rockler.com/product.cfm?page=5228) and is P/N
32057 shown on this page. It's more or less oval in shape, very
lightweight, and looks nice when installed. At cruise speeds my eyeball vents
provide
at least as much air as you would experience from a typical airliner
eyeball vent. A small piece of zigzag trip tape in front of the NACA vent also
helps considerably to increase the amount of air that enters the NACA vent.
Zigzag is available here: _http://wingsandwheels.com/page29.htm_
(http://wingsandwheels.com/page29.htm)
I installed the Ultimate Ventilators below the instrument panel, about
knee level, on either side using the hole left where my lower half of the
fuselage was mounted in the cradle during construction. These provide a very
nice blast of air, even on the ground, that can be directed somewhat up and
down, depending on how much they are open. No need for trip tape on these,
though. They allow plenty of air in, no zigzag is necessary.
It gets hot and sticky here in SE Tennessee in the summertime and highly
recommend both of these methods to provide creature comfort.
Hope it helps!
Regards,
John Lawton
Whitwell, TN (TN89)
N245E - Flying
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