Thread Tools Search this Thread Display Modes
Old 08-22-2003, 03:45 AM   #1
2 Rivet Member
Join Date: Jun 2003
Posts: 76
Images: 4
Smile What size aluminum for under belly?

I have seen a few sizes in the threads and was wondering what was on the original? Is it .040 or smaller?

Also, I went to to try to get an idea of the cost for this. When I look at .040 it looks as though there are different types of aluminum for the exact same size. Example: ALCLAD 2024-0 ALCLAD $11.80 running foot or 5052 H32 @ $8.80 per running foot. Does anyone know the difference?

I read last night that some installed the under belly in sections, making it easier to "get the fit". I think that is what I am going to do, and use aluminum screws with sealant.

Got my custom black water tank from all-rite yesterday and what a nice job they did! Today, I am off to the sheet metal shop with what's left of my black water tank tray to get a new one made.

Sure wish it would cool off! These Texas summers make it a real challange to get anything done!

Thanks everyone for your comments and help!


Bryanhu is offline   Reply With Quote
Old 08-22-2003, 06:14 AM   #2
Rivet Master
LOST , Hawaii
Join Date: Jun 2002
Posts: 2,193
This gives a quick description of common grades of aluminum. Alclad is for surface appearance, I would save my money underneath. I don't know what AS originally used, but wouldn't use anything heavier than .030 myself, it is a non structural cover. I have been getting 4x8 sheets of .040 for $50, check around locally because shipping can be a killer on large items.

I would also do some experimenting with aluminum screws before i settled on them. They break easily especially when going into steel. There is still going to be corrosion between the screw and the cover and steel. I have used a lot of stainless tek screws. They are one operation instead of two and the stainless should last pretty well.


74Argosy24MH is offline   Reply With Quote
Old 08-22-2003, 06:21 AM   #3
Rivet Master
59toaster's Avatar
1959 22' Caravanner
Atlanta , Georgia
Join Date: Feb 2003
Posts: 2,197
Images: 22
Tried to find a post that was from Phil&Sue I want to say. He put a mic on the belly pan and I want to say to was 032. I think the post may have been lost when the forums crashed a few months back.

You have me curious as well on the grades. I hope we can get a good answer on that.

As for doing the belly in sections. That is exacly how I plan to do it. The perimiter edge is riveted with the sides so my plan is to install the edge like factory up to the frame rails. Then do a front a rear center plates.

Here is where the problem will be.

There is not fastening points in the center. Factory the pan is pretty well just held on by the permiter fastenters. You could drill holes into the the bottom of the frame rail but my fear is that will help promote rust in the frame rails. I plan to weld a tab about every 4-6 and use that as a mounting point. Use the thin aluminum from frame to belt line and use a cheaper grade of 040 for the center where it's not visible and have it over lap the thinner perimiter peices.

Now the belly pan on mine is all flapt peices. The newer units and possibly your the corners were stamped for the shape. You may need to retain those sections from the original pan because you are not going to be able to duplicat the pressing unless you have full blown metal shop at your disposal with a english wheel or power hammer.
1959 22' Caravanner
1988 R20 454 Suburban.
Atlanta, GA
59toaster is offline   Reply With Quote
Old 08-22-2003, 07:13 AM   #4
2 Rivet Member
Join Date: Jan 2003
Posts: 88
Images: 6
I thinkitmay be .025 based on this thread

amfab is offline   Reply With Quote
Old 08-22-2003, 07:19 AM   #5
2 Rivet Member
Join Date: Jun 2003
Posts: 76
Images: 4
Man, fast! Thanks again, everyone, for the feedback to help make this easier for me.

Bryanhu is offline   Reply With Quote
Old 08-22-2003, 09:01 AM   #6
Join Date: Feb 2003
Posts: 112
I'm pretty sure-

That .032 is all they used. Its $28 a 4X8 sheet here in Miami.

Pop rivet that thing on- I've only done repairs- never a replacement, but have had luck with the long pops.

It was 123F in Blythe Cal., last week- does that help with the heat problem? I was working on a trailer out there in the middle of the desert...
trailertrash is offline   Reply With Quote
Old 08-22-2003, 06:10 PM   #7
2 Rivet Member
Join Date: Jun 2003
Posts: 76
Images: 4
OK - 123 degrees! No more complaints!


Bryanhu is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Interior Aluminum Replacement swebster Upholstery, Blinds, Walls & Interior Finishes 40 05-16-2017 04:58 AM
where belly meets floor meets shell JrnymnJay Repairing/Replacing Floor &/or Frame 6 01-09-2006 12:05 PM
belly pan removal skip Belly Pans & Banana Wraps 6 08-17-2003 06:58 AM
believer in aluminum tanks! JohnGalt48 On The Road... 7 08-15-2002 05:49 PM
Question re how to cut aluminum sheeting and get a clean edge... williamhenshall Ribs, Skins & Rivets 7 06-12-2002 05:58 PM

Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:45 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.