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Old 05-21-2018, 07:42 PM   #1
2 Rivet Member
1968 28' Ambassador
Southwest Ranches , Florida
Join Date: Nov 2015
Posts: 44
Keep gray tanks from sliding side-to-side


I'm following the plans of some others on the forum and mounting my gray tanks with steel "straps" like the photo below.

The only thing that's coming to mind is how do I keep the tanks from sliding side-to-side, like between the main frame rails?

Any help would be much appreciated.

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Old 05-21-2018, 07:47 PM   #2
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2002 30' Classic S/O
Fleming Island , Florida
Join Date: Nov 2013
Posts: 4,279
Mine had styrofoam stuffed between them and the frame rails. I dropped the pan and pieces of styrofoam fell down all around. I have put the pieces back up and wedged them in tight.

“You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO WBCCI 1322
2002 Classic 30 Slideout -S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
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Old 05-21-2018, 10:42 PM   #3
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1958 26' Overlander
Battle Ground , Washington
Join Date: Jun 2013
Posts: 736
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Tank spacer

If your dealing with small gaps, under 3/4", on some or all sides you might want to take a look at this. It a closed cell medium density foam with an adhesive back. It does not compress easily, but does have some give. I used it for some of my tanks that were close to the frame rails. You could also use it above the tanks to take up any slack.
Harold & Rebecca

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Old 05-21-2018, 10:46 PM   #4
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1974 27' Overlander
Baltimore , Maryland
Join Date: Mar 2016
Posts: 1,039
I shot a bunch of canned foam in the voids around the tanks to prevent shifting. Tite foam from Home Depot is a nice dense product for that.
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Old 05-22-2018, 01:26 PM   #5
3 Rivet Member
1959 24' Tradewind
Twin Falls , Idaho
Join Date: Jul 2015
Posts: 186
I used some expanded foam packing (not styrofoam). I got it from our IT dept, it's what HP uses to ship their computers. I thought I had pictures of it, but I think my better half has them. I'll post it up later today. Your layout looks just about like mine. I used Roxul and 1" foam board and Reflectix stapled to the floor. Here's a picture of my layout minus the packing on the side of the tanks

Anyway, it's pretty dense and it fits perfect in the channel of the frame.
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