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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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 Posted: Tue Mar 16, 2010 5:52 pm Post subject: Rust Dust |
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Got a question for you metallurgically-knowledgeable types out there: on the donor aileron I am using to rebuild the FSII wing, did not like the looks of the metal fittings at either end, so pulled them off, and sure enough they were rusty inside the aluminum aileron tube. Cleaned them off, and they are currently drying under a coat of rustkiller/sealer, but here's the question: as far down as I can see with the flashlight the inside of the aileron tube has a lot of "rust dust" in it, left over from what came out of the inside of the aileron bellcrank at one end, and the counter balance at the other end. I am inclined to just take a hose, swab it out good, rinse it, let it dry and forget it.
But since I have never encountered this before, haven't read of anybody else dealing with it either, (and at my age, any learning opportunity is something good) - so any opinions (good, bad or otherwise) out there of what might be a better idea?
Richard Pike
MKIII N420P (420ldPoops)
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Wed Mar 17, 2010 1:45 am Post subject: Rust Dust |
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Richard, I don't know how reactive iron oxide is with aluminum, but iron by itself, if sealed against the aluminum will cause the aluminum to corrode. How about a bottle brush with a piece of cord attached so it can be drawn through the tube for a little mechanical scrubbing action, too? With a little dish washing soap to help dislodge and float the dust away and the tube should be fine. Call me over cautious, just not late for dinner (rim shot, please). :-}
Rick Girard
On Tue, Mar 16, 2010 at 8:53 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:
[quote]--> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>
Got a question for you metallurgically-knowledgeable types out there: on the donor aileron I am using to rebuild the FSII wing, did not like the looks of the metal fittings at either end, so pulled them off, and sure enough they were rusty inside the aluminum aileron tube. Cleaned them off, and they are currently drying under a coat of rustkiller/sealer, but here's the question: as far down as I can see with the flashlight the inside of the aileron tube has a lot of "rust dust" in it, left over from what came out of the inside of the aileron bellcrank at one end, and the counter balance at the other end. I am inclined to just take a hose, swab it out it out good, rinse it, let it dry and forget it.
But since I have never encountered this before, haven't read of anybody else dealing with it either, (and at my age, any learning opportunity is something good) - so any opinions (good, bad or otherwise) out there of what might be a better idea?
Richard Pike
MKIII N420P (420ldPoops)
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http://forums.matronics.com/viewtopic.php?p=290539#290539
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jbhart(at)onlyinternet.ne
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| Posted: Wed Mar 17, 2010 4:49 am Post subject: Rust Dust |
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Richard,
Dust rust is the most stable form of iron as iron oxide. Since it is
resting against the most stable form of aluminum as aluminum oxide, I would
not worry about it. If there is tons of the stuff, I would try and blow a
string through the tube and tie a round spiral brush on one end and pull it
through and see if I could loosen it up and then blow it out, but otherwise
forget it.
Jack B. Hart FF004
Winchester, IN
At 06:53 PM 3/16/10 -0700, you wrote:
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Got a question
..............
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Wed Mar 17, 2010 5:43 am Post subject: Re: Rust Dust |
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Baby bottle brush, dish soap and a cord. I like it. Off to the Dollar Store for a brush!
Thanks guys.
Richard Pike
MKIII N420P (420ldPoops)
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