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Old 08-17-2020, 09:56 AM   #1
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1977 31' Sovereign
Ottawa , ON
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fixing others mistakes? - shell and side wraps

Hey all,

First post here - I'm embarking on a restoration of a 1977 Sovereign that someone else had started and gave up on. Looking it over I can see that they put the skin back on hastily and it doesn't fit well (bubbles in one corner) and is a bit crooked (how??). They also didn't put on the side wrap first, which I think is something that makes sense so that water run off doesn't run into the side wrap.

The existing side wraps that they took off are fairly corroded but I can use them as a template at least. My plan is to make new side wraps, disconnect the shell and adjust it, then put the side wraps under the shell. I'm planning on leaving the belly pan off for now in case I need to get to something under the trailer - or if I want to run wiring under the floor. I figure I can fit it up under the side wrap later.

I've seen some pictures of other restos though where it looks like the side wrap is on the outside of the shell. Why would that be?

Also, I've seen some mention of trempro and wondering how and where that should be used when putting the shell back together?

This is my first airstream reno and not having taken it apart leaves me at a bit of a disadvantage as I don't know how it went to begin with!!
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Old 09-01-2020, 02:06 PM   #2
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Aluminium size

I am curious, what size aluminium do you use for the side wraps?
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Old 09-01-2020, 03:14 PM   #3
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Welcome to the Forums, and the fun of not only restoring a trailer, but also untangling someone else's aborted project!

So, (surprisingly) the way the factory built your trailer, the shell is landed on the subfloor/frame, and the wraps are attached outside of the skin (so that, yes, water is virtually funneled into the bellypan). I assume the reason the wraps don't come up under the exterior skin is because it is more work.

There are Forums members who have gone to great pains to try to seal this junction with Vulkem, and others who have actually rebuilt with the wraps under the exterior skins. I suppose it is another of those questions of what is "best," and what is "good enough." That is up to you to decide on your trailer. It is easy for these projects to take years and years if you always look for the best solution.

Trempro (also known as "Vulkem") can be put anywhere you want to seal a crack (ie., rivets, panel joints, overlaps, any perforation of the shell, like vents or lights, etc.).

good luck!
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Old 09-02-2020, 08:59 AM   #4
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1977 31' Sovereign
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Thanks for that info. I think I'll probably put them underneath anyway since that just makes more sense to me.
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Old 09-02-2020, 09:00 AM   #5
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1977 31' Sovereign
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Quote:
Originally Posted by dwayne.anius View Post
I am curious, what size aluminium do you use for the side wraps?
I'm still figuring that out. My manual says 3004 .024 but I can't find that aluminum anywhere. I have another thread open asking what is the current equivalent of that, as I assume 3004 isn't made anymore?
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Old 09-02-2020, 09:27 AM   #6
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Quote:
Originally Posted by t1v0 View Post
I'm still figuring that out. My manual says 3004 .024 but I can't find that aluminum anywhere. I have another thread open asking what is the current equivalent of that, as I assume 3004 isn't made anymore?
The .040" works very well for the wraps anything thicker may be harder to bend. And yes the wrap overlay is stupid, but your shell may not fit the u-channel if you reverse it now. If its sealed under the guardrail and then sealed on top of the guard rail with Tempro 635, it will be fine.
This is who supplies Airstream:

https://www.aircraftspruce.com/catal...eet_2024t3.php
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Old 09-02-2020, 10:14 AM   #7
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Airparts, Inc. in Kansas City carries the types of aluminum sheets you're looking for.

https://www.airpartsinc.com/77_AIRST..._Camper_RV.htm

Hopefully you can find a source closer to home.
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