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Old 08-23-2012, 02:34 PM   #15
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What the ???

I was just browsing around in the exterior repair section of the forums, and found a pdf document that purported to be the history of aluminum at Airstream, and it indicated that my '73 likely has skins made of 6061 T6 (contrary to the rumors I had heard regarding 70's era trailers still using 2024 T3 Alclad). Anyone with a calibrated eyeball able to confirm?
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Old 08-23-2012, 03:12 PM   #16
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Quote:
Originally Posted by Belegedhel View Post
I was just browsing around in the exterior repair section of the forums, and found a pdf document that purported to be the history of aluminum at Airstream, and it indicated that my '73 likely has skins made of 6061 T6 (contrary to the rumors I had heard regarding 70's era trailers still using 2024 T3 Alclad). Anyone with a calibrated eyeball able to confirm?

I had been wondering if this type of question could be objectively answered by Airstream Corporation. I had a question about my 1976 and the first person I talked to, after the pickup, answered my question. I was pretty impressed.
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Old 08-23-2012, 04:59 PM   #17
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My 71 GT straight panels were 2024-T3 and I believe the compound curve panels are 6061-T6. I could be wrong on the 6061 but I know for sure that the compound panels are not 2024-T3
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Old 08-24-2012, 08:37 AM   #18
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What do the panels have marked on them?
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Old 08-25-2012, 02:25 PM   #19
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No markings anywhere.
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Old 08-28-2012, 03:21 PM   #20
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Well, I took Splitrock's advice and called the mothership and left them a voice mail regarding my skin conundrum. Got a call back a few hours later, and was told that starting in 1972, the skin material changed to the 6061 T6, .032" thickness all around. This is for the flat and formed sections as well. So there you go. I suppose that My only dilemma now is that my flat sections have the milled appearance, and it doesn't seem that you can buy milled 6061 sheet.
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Old 08-28-2012, 04:42 PM   #21
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Just an add-in from my project 1973 to y'all - I'm doing a partial back-sheet replacement (with the extra two rows of rivets) but now have found most of the multilayer panel-to-rib rivets have either sheared or are 75% cut through from the panels working a scissor action on them, from time, heating and cooling cycles, vibration, accident(s)?, tail-dragging, etc. etc..

Even though they are sheared in the center layers they have not moved much, the factory vulkem holds the back flange on and the rivet shaft is still expanded and offset enough at the second of third layer the exterior dome looks tight.

So l be replacing most/all of them with the hardened flavor of 5/32" bucked rivets. If any of you are working there you might look if your shell has a similar situation working... I'll be adding a note to the "Hey y'all, watch this..." refurb thread and hope for better insight on proper repairs there...
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