Because you may find that the air pressure behind the D panel is higher than the
cockpit and so you will simple see air coming from the rear to the cockpit
unless
you have some arrangement in the tail to lower the air pressure in that
area.
In my aircraft that is what happens, Trigear XS.
Alan
Sent from my iPad
> On 31 Aug 2023, at 16:59, danbish99 <bdanbish@gmail.com> wrote:
>
>
> Newbie question here - why would there be a need for the tubing from the D
> panel
back to the port near the rudder? Seems you'd just install an adjustable vent
or two below the D panel and an exit one near the rudder. The air is going
to get to that exit with or without the tubing. Then test different adjustments
in the vents until you get a setting that best matches your most used altitude.
Wrong?
>
> Dan
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> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=511386#511386
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