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Old 05-07-2012, 10:21 AM   #1
New Member
Lynnfield , Massachusetts
Join Date: May 2012
Posts: 2
Looking for advice on repair/replace Blackwater tank for '67 Caravel

I'm looking for a new tank or advice on how to repair mine. I think my tank is made of polyurethane and is red. I would like to know if anyone knows how to repair these or where to buy a new one. I have some cracking around the dump valve. This is my first airstream, so any help would be greatly appreciated. TIA.
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Old 05-08-2012, 07:28 PM   #2
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1959 26' Overlander
Western , Massachusetts
Join Date: Sep 2005
Posts: 1,468
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Welcome to the forum.

I'd offer two suggestions. First -- if your tank is like my '65 Caravel was, plan on dumping it.

I made one out of fiberglass, documented here. It's certainly more work than a new one, but the cost isn't bad. Consider the wood as sacrificial and think of the several layers of fiberglass as the tank.

Another option is to draw up your tank from the old one and order a new one like Tim Shepard did in his blog on the VAP. See his blog post here.

You do know about the VAP, don't you?

Good luck with her.

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Old 05-08-2012, 07:59 PM   #3
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1971 25' Tradewind
1993 34' Excella
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Estancia , New Mexico
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Polyurethane or polyethylene? You can weld polyethylene.
Sail on silver girl. Sail on by. Your time has come to shine.
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Old 05-08-2012, 09:27 PM   #4
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1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
Join Date: Jul 2005
Posts: 2,944
Tank material

The usual material for the tanks is polyethylene and is very weldable. Some people have also used a special epoxy.
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