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stuart(at)harnerfarm.net
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 Posted: Wed Apr 13, 2016 10:56 am Post subject: Kolb-List:Corrosion Prevention/drain holes |
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John,
Interesting about mud daubers. We have them in ND but not too much of a problem. Occasionally find a nest or two in a dark corner of a garage or barn. Maybe because it has been too dry to make mud the last few years. J
Sometimes leaf cutter bees can be a problem but again is fairly rare around here. Mice are much more of a threat to all airplanes (and everything else you value). Once a rabbit ate all the ignition wires and some of the wire harness in various places on a company van, but that is another story…
Drain holes. Usually I would agree that they need to be installed and have followed the plans/FAR’s on other aircraft I have done. However, for my Firefly I chose to leave them off. At least for now. I did put two holes in the lower outside corners of the fuselage bottom fabric. I used the patch and melt method, quick and easy.
In my case the wings and tail surfaces are completely sealed up. The only moisture that can get in would be whatever water vapor could migrate through the fabric and then condense out with temperature changes.
That will change as soon as I cut out the inspection holes for the wings. Some (but not all) inspection covers have small vents cut in them that should be sufficient to take care of natural condensation. But other than when I am flying, Serenity sits in a hangar with the wings and tail folded. Having holes at the trailing edge sure won’t help in that situation.
The good side is that small patches and holes are very easy to install in the future because of the Poly Fiber products.
Did you put drain holes in the tail and control surfaces?
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of John Hauck
Sent: Wednesday, April 13, 2016 12:44 PM
To: kolb-list(at)matronics.com
Subject: RE: Last Flight 2005/Alodine/Corrosion Prevention
Rick G/Kolbers:
Anything on my MKIII that could possible hold water gets a drain hole at its lowest point when in its 3 point stance. I tried drain grommets on previous Kolb models, but they turned out to be a pain in the butt.
Instead of drain grommets I use 50 cent sized patches and a pencil soldering iron. I make a 3/16" drain hole approximately. Works well for me.
One drawback down here in the sunny south is mud daubers. Some of them can get inside the drain holes to build mud nest. I discovered that when I pulled fabric to repair wing and aileron 15 years ago. They are nasty.
I have to constantly keep a look out for their nest in places on my engine.
john h
mkIII
Titus, Alabama
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Wed Apr 13, 2016 12:16 pm Post subject: Kolb-List:Corrosion Prevention/drain holes |
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I put drain holes in everything that could collect water. Each rib bay in wings, ailerons, flaps, horizontal stabilizers, elevators, upper and lower vertical stabilizers, and rudder. In my earlier years of flying cross country I experienced considerable rain in flight and while tied down outside. Down here in the SE the humidity is high and some mornings, like a couple recent ones at Lakeland, the MKIII was drenched with dew, inside and out.
john h
mkIII
Titus, Alabama
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of Stuart Harner
Sent: Wednesday, April 13, 2016 1:54 PM
To: kolb-list(at)matronics.com
Subject: RE: Kolb-List:Corrosion Prevention/drain holes
John,
Interesting about mud daubers. We have them in ND but not too much of a problem. Occasionally find a nest or two in a dark corner of a garage or barn. Maybe because it has been too dry to make mud the last few years. J
Sometimes leaf cutter bees can be a problem but again is fairly rare around here. Mice are much more of a threat to all airplanes (and everything else you value). Once a rabbit ate all the ignition wires and some of the wire harness in various places on a company van, but that is another story…
Drain holes. Usually I would agree that they need to be installed and have followed the plans/FAR’s on other aircraft I have done. However, for my Firefly I chose to leave them off. At least for now. I did put two holes in the lower outside corners of the fuselage bottom fabric. I used the patch and melt method, quick and easy.
In my case the wings and tail surfaces are completely sealed up. The only moisture that can get in would be whatever water vapor could migrate through the fabric and then condense out with temperature changes.
That will change as soon as I cut out the inspection holes for the wings. Some (but not all) inspection covers have small vents cut in them that should be sufficient to take care of natural condensation. But other than when I am flying, Serenity sits in a hangar with the wings and tail folded. Having holes at the trailing edge sure won’t help in that situation.
The good side is that small patches and holes are very easy to install in the future because of the Poly Fiber products.
Did you put drain holes in the tail and control surfaces?
| | - The Matronics Kolb-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Kolb-List |
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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