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Old 06-17-2019, 11:58 AM   #1
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1966 26' Overlander
San Luis Obispo , California
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1966 Black water Tank Capacity

Does anyone know what the capacity is for the original black water tank on a 1966 Overlander? The unit does not have a gray water tank. I believe the tank is the same for 1964 through 1966. Thx!
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Old 06-17-2019, 01:42 PM   #2
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If I recall, my 67 Tradewind has a 16 or 18 gallon black tank(I replaced factory tank with an original type from Inland), I would doubt the 66 would have a larger capacity.
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Old 06-17-2019, 07:27 PM   #3
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1986 34' Limited
1975 27' Overlander
Conifer , Colorado
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Here is a photo of the black tank out of my 66 Trade Wind, one model size shorter than your Overlander. The tank is small, and woefully inadequate for solid waste. It was only about 3" deep. I embarked on a big project to replace it, as well as add the gray water tank, both of 27 gallon capacity.

David
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Old 06-18-2019, 10:14 AM   #4
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1966 26' Overlander
San Luis Obispo , California
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Black Tank

Thank you for your replies and help. I too want to replace the small tank with larger and add a grey water tank. That's another project to do when I "retire". Thx!
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Old 06-18-2019, 06:17 PM   #5
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1986 34' Limited
1975 27' Overlander
Conifer , Colorado
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Here is a photo of the two new tanks I hung under my old Trade Wind. It worked out pretty good. And here is a photo of the new bath I made to accommodate the new tanks. That works good too.

My "retiree" project may give you some ideas when the time comes.

David
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Old 06-18-2019, 06:29 PM   #6
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Maybe use a 5-gallon water container [after verifying its exact holding capacity] and fill your empty black tank? This "full-scale model" method would be accurate, whereas every other concept/theory approach is just an educated guess.



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Old 06-20-2019, 07:44 PM   #7
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1986 34' Limited
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We called them "swags" at work.

Good idea on fill and measure the drain.

David
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