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Tim Olson
Joined: 25 Jan 2007
Posts: 2879
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 Posted: Tue Sep 25, 2007 4:28 am Post subject: Fuel Tanks - To Alodine or Not to Alodine - That is the Que |
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If you rinse the alodine well after the surface is prepped, there
shouldn't be any downside. The process is a chemical conversion
of the surface layer for corrosion protection, so its not something
that will wash off in fuel...as long as you clean it off well after
the alodine process. The pro is that it's a good step up in
corrosion protection of the metal. Alodining also is a good
surface prep to INCREASE adhesion of primers and paints, and will
likely make the proseal adhere better too, although the benefit
is minimal there.
Tim Olson - RV-10 N104CD - Flying
do not archive
Patrick Pulis wrote:
| Quote: |
Could anyone please tell me the pro's and con's of alodining fuel tanks
prior to construction?
Is this warranted or a wasted effort that will create problems with
proseal adhesion or the like?
My initial thoughts are to alodine the tanks.
Many thanks in anticipation for your response.
Patrick Pulis
#40299
Adelaide, South Ausralia
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planesmith(at)hotmail.com
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| Posted: Tue Sep 25, 2007 6:30 am Post subject: Fuel Tanks - To Alodine or Not to Alodine - That is the Que |
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Hi Patrick,
Here is a link to a discussion on this topic that happened in January of 2006 http://forums.matronics.com/viewtopic.php?t=876&sid=7b6b14c50442f45e4af12d4bab1c41b9. Most of the conversation was marked "do not archive" so it doesn't show up in the archives.
Enjoy,
Vern Smith (Almost ready to work on cabin top:)
> Subject: Fuel Tanks - To Alodine or Not to Alodine - That is the Question?
| Quote: | Date: Tue, 25 Sep 2007 15:47:12 +0930
From: patrick.pulis(at)seagas.com.au
To: rv10-list(at)matronics.com
--> RV10-List message posted by: "Patrick Pulis" <patrick.pulis(at)seagas.com.au>
Could anyone please tell me the pro's and con's of alodining fuel tanks
prior to construction?
Is this warranted or a wasted effort that will create problems with
proseal adhesion or the like?
My initial thoughts are to alodine the tanks.
Many thanks in anticipation for your response.
Patrick Pulis
#40299
Adelaide, South Ausralia
>
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Can you find the hidden words? Take a break and play Seekadoo! Play now! [quote][b]
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planesmith(at)hotmail.com
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| Posted: Thu Sep 27, 2007 7:19 am Post subject: Fuel Tanks - To Alodine or Not to Alodine - That is the Que |
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Stephen,
I agree with your reasoning about corrosion in the fuel tanks. This is why the inside of my fuel tanks are not alodined. As far as the link in my email to the previous discussion, I firmly believe no decision should be made in a vacuum. That is want is so neat about this group, having access to enough info to make an informed decision.
As far as future fuels I think there will be more problems with the fuel tank sealant than the metal, alodined or not.
And as for age I'm 44 going on 29:)
Vern Smith (#324 just about ready for the cabin top)
do not archive
| Quote: | Date: Wed, 26 Sep 2007 23:26:33 -0400
From: sblankdds(at)gmail.com
To: rv10-list(at)matronics.com
Subject: Re: Fuel Tanks - To Alodine or Not to Alodine - That is the Question?
Vernon,
I see it this way.... fuel is hydrophobic (does not like water), so hard to corrode the metal when it has hydrocarbons next to it most of the time. Also, if the tank is kept mostly full, there is little O2 for oxidation. The risk of any alodine reacting with some future gas product or coming off from a poor metal prep seems to be a greater risk vs any benefit it may provide. My 1952 C-170b has just Alclad aluminum in the tail cone and is still fine after 55 years (based in Florida, 1.5 miles from the ocean). How old are you???? I am 49, and figure on flying 20-30 more years... if lucky. The plane should out last me with no extra metal protection.
--
Stephen G. Blank, DDS # 40499 Building the tail cone finally!!
184 NW Central Park Plaza
Port St. Lucie, FL 34986
772-475-5556 >>> Cell
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Discover the new Windows Vista Learn more! [quote][b]
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