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  #1  
Old 06-25-2019, 12:14 AM
donaziza's Avatar
donaziza donaziza is offline
 
Join Date: Jun 2007
Location: Atlanta
Posts: 643
Default Rubber padding that keep birds out of your cowl

Went out to go flying yesterday. Found the left air intake by the cylinder jammed full of leaves, twigs and other junk. Obviously, a bird building a nest. (And it's in a hangar)Where does one find those rubber pad thingies you use to keep the birds out? I checked Aircraft Spruce---no luck.
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  #2  
Old 06-25-2019, 12:41 AM
Jpm757 Jpm757 is offline
 
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Bruce's Custom Covers sells a very nice set of cowl plugs.
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  #3  
Old 06-25-2019, 12:42 AM
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Bill Boyd Bill Boyd is offline
 
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Location: Landing field "12VA"
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One glues a few chunks of sliced pool noodle into a bigger chunk, then carves same to fit cowl inlet as a plug. One can if desired secure a rope between the two plugs with knotted ends.

Alternatively, one can line the inlets with packing tape and fashion plugs from expanding foam with a rope lanyard foamed in place.

I have done both. #2 fits more snugly since it is a custom mold. No pics for now, but probably not necessary.
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  #4  
Old 06-25-2019, 12:44 AM
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pazmanyflyer pazmanyflyer is offline
 
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Location: Litchfield Park, AZ
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Quote:
Originally Posted by donaziza View Post
Went out to go flying yesterday. Found the left air intake by the cylinder jammed full of leaves, twigs and other junk. Obviously, a bird building a nest. (And it's in a hangar)Where does one find those rubber pad thingies you use to keep the birds out? I checked Aircraft Spruce---no luck.
From Vans at https://shop.vansaircraft.com/cgi-bi...uct=cowl_plugs

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  #5  
Old 06-25-2019, 08:52 AM
NLPete NLPete is offline
 
Join Date: Sep 2007
Location: Southeastern, MN
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Default This works

This works for me. I only use it when away from home. You may want to upgrade the factory covering (package it comes in) to an old bread bag or something better if left out for long periods of time. I'm all about fancy!
https://www.fleetfarm.com/detail/det...031?Ntt=sponge
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  #6  
Old 06-25-2019, 01:53 PM
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flyboy1963 flyboy1963 is offline
 
Join Date: Oct 2008
Location: Lake Country, B.C. Canada
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Default for outdoors

I use a couple of the 'fancy' car wash sponges ( $4) with the grippy thing on one side, and the terrycloth on the other side.
bonus, if it's bright green, so you don't miss it on your, ahem, thorough pre-flight! the sun eventually fades the colour, so the frugal of us turn the thing over ....for another year!

bonus#2, you can wash/wax your plane with it!
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  #7  
Old 06-25-2019, 03:40 PM
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Veetail88 Veetail88 is offline
 
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Quote:
Originally Posted by NLPete View Post
This works for me. I only use it when away from home. You may want to upgrade the factory covering (package it comes in) to an old bread bag or something better if left out for long periods of time. I'm all about fancy!
https://www.fleetfarm.com/detail/det...031?Ntt=sponge

I've used these as well, sans the plastic bag. On the down side, they aren't bright colored or have flags that stick up into view from the cockpit or even have a rope between them that would pull them out if you start without removing them. On the UP side, IF you should miss them on pre-flight, they will either blow into the upper cowling area or stay sort of in place. Either way, they're quite porous and will allow enough air flow to not bring you out of the sky. In fact, you might not even notice warmer CHT or oil temps. Or so I've been told........ By a friend......... But it sure wasn't me!
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  #8  
Old 06-28-2019, 11:36 AM
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donaziza donaziza is offline
 
Join Date: Jun 2007
Location: Atlanta
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Default El Cheapo sponges fit perfectly in my cowl intakes, keeps that same pesky bird out

HA! I went to Walmart. Got 2 sponges that are absolutely a perfect fit in my cowl intakes. It's like they were made for an RV 8. $1.99 each. All I have to do now is tie a couple of red "do not fly" streamers to each one, and I'm good to go. I love cheap.

I'd post pictures, but I always have a heck of a time trying to do that.

Last edited by donaziza : 06-28-2019 at 11:39 AM.
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  #9  
Old 06-28-2019, 11:39 AM
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Sam Buchanan Sam Buchanan is offline
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Location: North Alabama
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Quote:
Originally Posted by donaziza View Post
HA! I went to Walmart. Got 2 sponges that are absolutely a perfect fit in my cowl intakes. It's like they were made for an RV 8. $1.99 each. All I have to do now is tie a couple of red "do not fly" streamers to each one, and I'm good to go. I love cheap.
I like having both foam plugs connected to each other with a rope that is draped over the spinner. I suspect starting the engine with the plugs in place would result in them being jerked out by the prop blades.
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  #10  
Old 06-28-2019, 12:40 PM
rv7charlie rv7charlie is online now
 
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After a dirt dobber (hey, it's Mississippi; dauber wasp to you guys north of the Willie Dixon Line) built a giant incubation suite in my -4's carb inlet, I improvised with a chunk of carpet foam and some nylon twine. With a loop tied on the end of the twine and looped onto a prop blade, it's a failsafe for when uh.. IF one forgets to remove it. It does work. I'm told. :-)

The -6 I just bought came with cowl & induction plugs, but no cord connecting them. I just ordered some paracord to connect them, so I'll have the 'auto-remove' feature.

BTW, that dauber nest incident happened inside a closed hangar. I caught another trying to build in the pilot side fresh air inlet of the -6, within days after we purchased it. If you live in the southern USA, be careful.
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