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Bruce's custom covers cowl plugs


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If you're using them contain heat for winter pre-heat needs, the gap behind the spinner to cowl opening is giant.  I've been draping a towel over the cowl and snake one edge between the cowl and spinner, pull it down around the prop shaft to seal this off.  If the plane is left outside these cowl plugs are more for anti-bird and some weather protection, I don't see need for these with hanger kept planes.

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1 minute ago, GrassStripFlyBoy said:

If you're using them contain heat for winter pre-heat needs, the gap behind the spinner to cowl opening is giant.  I've been draping a towel over the cowl and snake one edge between the cowl and spinner, pull it down around the prop shaft to seal this off.  If the plane is left outside these cowl plugs are more for anti-bird and some weather protection, I don't see need for these with hanger kept planes.

They would mostly be used for trips. When the plane is stored outside for a few days. Also. I place rags over my cowl openings. Even in a well sealed hangar down here the mud daubers are sneaky bastards that will build a nest in a day. Anything helps in this case. 

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On 8/3/2020 at 9:24 PM, GrassStripFlyBoy said:

If you're using them contain heat for winter pre-heat needs, the gap behind the spinner to cowl opening is giant.  I've been draping a towel over the cowl and snake one edge between the cowl and spinner, pull it down around the prop shaft to seal this off.  If the plane is left outside these cowl plugs are more for anti-bird and some weather protection, I don't see need for these with hanger kept planes.

I have a cheapo airline blanket I drape over the cowl that covers the NACA inlet and spinner gap, I wrap it around and tuck it in the radiator opening and it covers everything else.  Then my Harbor Freight heat gun goes in the bottom of the cowl via a piece of heat-resistant scat tube.  Works great for pre-heating.

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