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Old 09-02-2004, 11:02 PM   #1
1 Rivet Short
krowsea's Avatar
Join Date: Aug 2004
Posts: 84
Inner space......

.....the aluminum frontier.

As I work my way through my '75 Sovereign, I've noticed that quite a bit of the factory hardware and such are screwed to the inner walls. Having perused the outer skin of my A/S many times, and noticing it doesn't look like a porcupine with a wealth of sheet metal screws sticking out of it, I'm going to make a giant leap of faith and assume there is some type of space between the inner and outer walls.

Does anyone know how thick that inner space is, and is it insulated perchance? I may need to replace a few items, or remount and replace a few screws in the near future. I'm pretty sure if I use a 3/4" X 12" lag bolt, it'll probably protrude through the outer skin. How much fudge factor 'do' I have though concerning the thickness of the space and the length of the screws? Is there any interior way to tell if there is a brace behind the walls, or if I use the original holes, should I feel fairly safe?

I'm not planning on doing any major changes, just repair. On the other hand, a 31' Sovereign with a 6' crystal chandelier, 5 or 6 velvet paintings from Mexico screwed to the walls (including the dogs playing cards, that's a given) on top of astro turf wallpaper would be pretty tasteful if done right, don't you think?


Sarchasm (n): The gulf between the author of sarcastic wit and the person who doesn't get it.

1975 31' Sovereign
2004 Dodge Ram 2500 'Laramie', HEMI
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Old 09-02-2004, 11:49 PM   #2
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2012 23' Flying Cloud
West Linn , Oregon
Join Date: Apr 2004
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Well, if you look at the window and door openings you can get a pretty good idea - about 1 1/2 to 2" max. Yes, it is all insulated with fiberglass (the pink stuff).

2012 Flying Cloud 23-D
1971 Safari 23 (sold)
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Old 09-03-2004, 07:41 AM   #3
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1978 28' Argosy 28
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One way to find the ribs is to look for the inner rivet lines. Unless it is a lap seam, the rivets are into ribs. Stay under an inch on the screw lengths.
Brett G
WBCCI #5501 AIR # 49
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato

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