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Old 04-17-2007, 08:21 PM   #29
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filiform corrosion

It is an unfortunate consequence of having this type of coated aluminum. See my post on my experience with filiform corrosion on my 2001 Bambi, along with technical research on the process and a remedy I use to halt the corrosion path:
http://www.airforums.com/forums/f381...on-23287.html?

I've applied the ACF-50 Corrosion Block product for several years now and can tell you that it works to halt the progress. I've photographically inventoried every visible rivet on the outside of my Bambi to track corrosion progress, and have had minimal growth on existing, treated tracks, but I apply ACS-50 every six months. And I live right near the ocean. I've also applied ACF-50 on every rivet. I cannot say it prevents filiform corrosion, but I have only seen a few spots that have developed since I started.

2air is right, sacrificial anodes will not work to prevent such corrosion. Read about how filifrom corrosion progresses and you will understand why.
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Old 04-17-2007, 08:33 PM   #30
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Thanks for the suggestions and reading 2air. I ordered Boeshield.

Mswartz, I have a few cans of ACF-50 and your report sounds promising. Are you treating areas not affected by corrosion as preventive measure? Such as rivet lines?
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Old 04-17-2007, 08:35 PM   #31
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tpi,
Sorry, I was editing my post while you sent yours. I have applied ACF-50 when dry and when I'd expect some time to penetrate crevices in the sun.
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Old 04-17-2007, 08:53 PM   #32
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Yep..we got it

Although I wish I didn't have it, it seems to be a problem with more than just a few of us. My tailights were replaced within the first six months and my grab handle next to the entry door is past saving. I also have numerous incursions of the same malady along the beltlines as well as the window trim.
As for my wheels, I wondered what that stuff was after looking close during a wash job.

My unit just had its first birthday. Add my name to the list. I will certainly try to get this solved or at least noted on my sixth warranty excursion to the dealer/service center. I love our Airstream, but I am not impressed with the quality control from the factory.

John
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Old 04-17-2007, 08:56 PM   #33
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hi marshall

the link to the paper you supplied is no longer valid...

did you copy the paper?

also with usage of acs 50...

have you noticed any sealant decay?

thanks.

i always feel itchy,

after viewing your photos...

cheers
2air'
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Old 04-17-2007, 09:03 PM   #34
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Corrosion

Just a thought....
You see this kind of corrosion in boats. They do use an anode metal but sometimes even that does not seem to prevent it.....in those cases it often is strongly believed to be an improperly grounded electrical system....and that is most often caused by persons adding things to the electrical system....such as radios....that are not grounded properly. It can get so bad that alert bullitins have been issued alerting swimmer that they could be electrocuted by swimming close to an improperly grounded boat.
Just a thought.
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Old 04-17-2007, 09:06 PM   #35
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2air:

The Journal of Corrosion Science and Engineering paper is on the site:

JCSE Volume 2 Paper 36

I've also saved this as a .pdf so if you cannot access it let me know and I'll send it to you.

The purpose of the research article was to discuss research findings on the progress of filiform corrosion on coated aluminum panels, comparing corrosion progress between humid and immersed conditions. One conclusion was that the filiform corrosion was enhanced by humid conditions, but did not significantly progress if the sample was completely immersed.

for tn2: Note that if the sample (ie, the trailer skin) is not immersed with the proposed anode in the fluid, then an anode cannot do any good.

re: sealant degradation; so far I've not noticed any softening or degradation of the sealant on my Bambi from use of ACF-50, going on several years now.

Thanks for the note on the link.
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Old 04-17-2007, 09:11 PM   #36
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John (Timemachine) how close to the ocean is your trailer stored? Even though I'm in OC I'm at about 1200 ft. and the climate is more like Hemet than HB.
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Old 04-17-2007, 10:04 PM   #37
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I have a question... does anyone have a trailer that is 2-6 years old that does NOT have filiform corrosion of the skin itself? See my photo below for a filiform skin corrosion example...[/quote]

Hi, I bought my trailer [actually picked it up Sept. 7th 2004] two and one half years ago. I have had some corrosion on the tail light plastic bezels and a rusty license light cover, but not aluminum problems. I'm probably ten miles from the beach/ocean and my trailer has spent it's entire life parked outside, next to my house, on my driveway. I only do a real wash job just before a trip; So I have hosed it down several times [in cool shaded weather] and only gave it about five real wash jobs. I have never yet waxed my trailer. Also my trailer came with the Classic belt moulding and rubber framed windows, if that could make any difference.
I wrote this because you asked; And maybe something that I did or didn't do made the difference. For now my trailer is fine. [fingers crossed] One last note: I don't leave my trailer plugged in to shore power while in storage [parked] and I use a portable battery charger without disconnecting my batteries about once a month.
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Old 04-17-2007, 10:18 PM   #38
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Unhappy We have it on our 2007

Add us to the list. I sent a detailed photo survey to Airstream a few weeks ago. I heard from them today that Customer Service is reviewing it. I've attached a copy of the email. The photos are small in this copy but not in the email--not sure why.

Randy
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Old 04-17-2007, 11:41 PM   #39
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Quote:
Originally Posted by tpi
John (Timemachine) how close to the ocean is your trailer stored? Even though I'm in OC I'm at about 1200 ft. and the climate is more like Hemet than HB.
We are 300 yards from PCH. It has spent half of its short life on the road or at service centers far more inland, 20 to 80 miles from the coast at a minimum. I would say we have done a fairly good job of washing it on a regular basis with the same specialized mild detergents I use on our black cars. The AS was bought inland and exibited the corrosion even at the original pick up. At the time I thought that the areas I first discovered were just "tape residue" still present after a very poor PDI. I guess I was wrong.

John
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Old 04-17-2007, 11:47 PM   #40
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These issue are a more than just a bit disturbing since We are currently in the middle of dealing for a new AS. I ask both dealers that I am working with for a purchase of an AS 25 FB and both of course said they don't see these kinds of corrisive issues you guys are talking about. However,,,,a third dealer I talked to who is no longer an AS dealer told me one of the reasons they don't sell AS anymore is the quality controll issues you guys are talking about. The only way AS will fix it is to put pressure on them. My puchase has been put on hold. We need to rethink AS as a retirement option. As much as I hate to think about it We are going to start shopping for SOB. It's really got me bummed out since this is all I have been thinking for a number of years. Sorry for the rant and raveing but when you want something special...and you find out its maybe NOT so special...well,,,you know what I mean. Thank you for listening.
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Old 04-18-2007, 12:08 AM   #41
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Don't give up..

Quote:
Originally Posted by DFord79
These issue are a more than just a bit disturbing since We are currently in the middle of dealing for a new AS. I ask both dealers that I am working with for a purchase of an AS 25 FB and both of course said they don't see these kinds of corrisive issues you guys are talking about. However,,,,a third dealer I talked to who is no longer an AS dealer told me one of the reasons they don't sell AS anymore is the quality controll issues you guys are talking about. The only way AS will fix it is to put pressure on them. My puchase has been put on hold. We need to rethink AS as a retirement option. As much as I hate to think about it We are going to start shopping for SOB. It's really got me bummed out since this is all I have been thinking for a number of years. Sorry for the rant and raveing but when you want something special...and you find out its maybe NOT so special...well,,,you know what I mean. Thank you for listening.
Although we have some issues, we would do it again. Don't give up the ship yet. There is nothing on wheels that is without some problem or defect. I still believe that an Airstream is worth the price if you use it. If it just sits and it is used once every couple of months, well, then it is not worth the price, but that is true with anything. In a year we have traveled to 25 states and about 15,000 miles. Oceans, mountains, deserts, lakes, rivers, big cities, little towns, no towns. (and we are not retired) And doing it in an Airstream just feels good. And the people you will meet, especially other Airstreamers, well, I can't say enough about how many wonderful friends we have made. It is not about money and any Airstream is no more perfect than you or I.

Please don't let our drive for perfection ruin your dream, we are addicted to aluminum and that's OK, even with a few irritating defects.

John
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Old 04-18-2007, 01:17 AM   #42
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hi john

what month did your unit travel to the dealer...

just thinking about the first dose of midwest road salt/sand and rocky mnt sand followed by more salt...

the na, mg and ca salts are leave chloride on the skin..

cheers
2air'
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