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Old 01-01-2021, 08:43 AM   #1
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1969 31' Sovereign
Bernalillo , New Mexico
Join Date: Aug 2020
Posts: 3
1969 Sovereign Black/Grey Tank

Hello,
We are restoring a 31’ 1969 Sovereign with hopes of increasing the size of the black tank and also adding a grey tank, since the 69 doesn’t have grey tank.
Do you know any tanks that would fit ideal to keep modifications minimal?

Thanks
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Old 01-01-2021, 09:59 AM   #2
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1966 22' Safari
1955 22' Flying Cloud
Fredericksburg , Texas
Join Date: May 2015
Posts: 1,763
Matt, Vintage Trailer Supply does sell a tank that is 50 x 21 x 4. That’s what we used. If your crossmember spacing will accommodate the dimensions, you could add metal straps underneath to hold them. Your belly pan will protect it from road rash. There are several tank companies out there. There’s always the option of custom built. Good luck
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Old 01-01-2021, 10:40 AM   #3
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1969 31' Sovereign
Bernalillo , New Mexico
Join Date: Aug 2020
Posts: 3
Awesome,

Thank you for the info Bubba. I will take a look and see what I can find. Much appreciated.
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Old 01-01-2021, 11:18 AM   #4
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1976 Argosy 24
1961 28' Ambassador
1968 26' Overlander
Lakewood , Colorado
Join Date: Jun 2014
Posts: 73
Hey Matt, sounds like a fun project you've got going... VTS is a good source, I've bought a few tanks from them but never a black tank, bonus is that shipping from them is very reasonable. Having done a similar project more than once, I usually get my measurements and then shop e-bay. I've bought the same basic tank 3 times from the same outfit, I think madison wholesale. No frame mods but the drain hangs below the frame, I'm all right with that. I think the tanks are about 35 gal. At drain outlet 7" tall. Just did a '68 Overlander which I think is very similar to yours. I did not re-use the black tank but I thought the size and basic setup was quite good, you'll have to work pretty hard to make a much larger capacity set-up. What I almost always do is eliminate the black tank (we use a porta-potti) and put as large of a gray tank as we can get in that spot. On the '69 there should be the dropped rear frame section, I put it up in there with the drain through the lower part of the frame, that far back I don't think any real frame strength is lost. Drain valve just oust the frame rail and only below the frame maybe an inch right at the drain. Here's a pic of the tank, I'll try to find one of the install.
Many other considerations went into these decisions...
Good luck, Mark D
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Old 01-01-2021, 01:20 PM   #5
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1976 Argosy 24
1961 28' Ambassador
1968 26' Overlander
Lakewood , Colorado
Join Date: Jun 2014
Posts: 73
OK, got called away, hopefully some pics... tank on ground, then, tank outlet (no valve yet, back by bumper....
Mark D
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Old 01-01-2021, 11:35 PM   #6
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1969 31' Sovereign
Bernalillo , New Mexico
Join Date: Aug 2020
Posts: 3
Thank you so much for the info. I really appreciate it
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