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occom
Joined: 26 Aug 2006 Posts: 404
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Posted: Mon Sep 03, 2007 10:50 am Post subject: Wing tank problem. NOT achohol related. |
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# 1492 was equipped with 13 gal wing tanks and one of them has split a seam while being removed. Right at the point where the cut off rib attached the top and bottom can be separated a little. I discovered it while leak testing before gluing them back into the wings. While I can for a thin blade into the 1" split it is far to small to force Hysol or any other thick adhesive in there. I am contemplating repair options and would like to hear what has succeeded or failed for others.
Dave Goddard- Mod IV 1050/582
do not archive
[quote][b]
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Guy Buchanan
Joined: 16 Jul 2006 Posts: 1204 Location: Ramona, CA
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Posted: Mon Sep 03, 2007 7:37 pm Post subject: Wing tank problem. NOT achohol related. |
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At 11:50 AM 9/3/2007, you wrote:
Quote: | I am contemplating repair options and would like to hear what has succeeded or failed for others. |
Two possibilities:
1. I checked briefly and found cyanoacrylate is compatible with gasoline. I would therefore get some thin cyano and copiously wick it into the crack while pumping the crack with the blade. Then clamp and let cure 24 hours. Then leak test. If you still get leaks pull a very slight vacuum on the tank and let thin cyano wick into the area until the leak stops. (This cure works for many types of leaks, including pinholes.)
2. Thin epoxy with 3% laquer thinner and try to get it to flow into the crack as above. Once clamped and cured then pull a slight vacuum and top off with thin cyano. See http://www.seqair.com/skunkworks/Glues/WestSystem/Thinning/Thinning.html for information on thinning epoxy.
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar. [quote][b]
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_________________ Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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john(at)leptron.com Guest
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Posted: Mon Sep 03, 2007 8:46 pm Post subject: Wing tank problem. NOT achohol related. |
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Guy,
I have not had pin leaks, but I can say that JB weld is the best thing to use on this type of repair. This is what we use on our uav’s and they fly over people day and night.
John Oakley
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Guy Buchanan
Sent: Monday, September 03, 2007 9:30 PM
To: kitfox-list(at)matronics.com
Subject: Re: Wing tank problem. NOT achohol related.
At 11:50 AM 9/3/2007, you wrote:
I am contemplating repair options and would like to hear what has succeeded or failed for others.
Two possibilities:
1. I checked briefly and found cyanoacrylate is compatible with gasoline. I would therefore get some thin cyano and copiously wick it into the crack while pumping the crack with the blade. Then clamp and let cure 24 hours. Then leak test. If you still get leaks pull a very slight vacuum on the tank and let thin cyano wick into the area until the leak stops. (This cure works for many types of leaks, including pinholes.)
2. Thin epoxy with 3% laquer thinner and try to get it to flow into the crack as above. Once clamped and cured then pull a slight vacuum and top off with thin cyano. See http://www.seqair.com/skunkworks/Glues/WestSystem/Thinning/Thinning.html for information on thinning epoxy.
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar. Quote: | http://www.matronics.com/Navigator?Kitfox-List | 01234
[quote][b]
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