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Sealing the fuselage bottom from exhaust fumes and CO.

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Ernie L.

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Anna, Tx
I’m curious what y’all do to overcome this issue.
Most all fabric covered airplanes, especially open cockpit types, seem to suffer with engine exhaust being sucked up into that nice, big, low pressure area inside the fuselage, and I really want to avoid that if possible.
The Starduster’s hinged and
Internally sprung main gear seems like it’d be a prime candidate for this kind of thing happening, so how do y’all stop this?
I once saw a Kitplanes article about an SA-300 that used “gear doors”
Attached to the gear legs so they can move with the gear, and the opening between the doors and the fuselage sealed with flexible rubber accordion type seals.
Of course, then we have the crankcase vent breather to deal with as well as other open areas on the fuselage.
What say you?
I’m at the point where ai need to start planning for this, as soon as my wings get finished.
Thanks!
Ernie
 

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