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Old 04-21-2021, 10:47 PM   #1
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1968 26' Overlander
San Francisco , California
Join Date: Jul 2020
Posts: 8
freshwater tank for 1968 Overlander

Hi all,

I just bought a used 30 (maybe 31) gallon freshwater tank from RV Depot over in Yucca Valley CA. Dimensions-wise, it fits, but the inlet on the tank doesn't line up w/ the fresh water fill. Wondering if that's typical? Or can I use flexible hose to "make it work", or should I just get a different tank altogether? FWIW, the old tank came from a Caravelle.

Strangely, the fresh water fill port affixed to the airstream seems unnecessarily close to the flooring. Please see attached pics.
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Old 04-22-2021, 11:37 AM   #2
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1967 26' Overlander
Huntsville , Alabama
Join Date: Dec 2003
Posts: 2,996
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I agree that the fill point is unusually low. The image below is from my '67 Overlander.

Although a flex line could work, I will mention that my tank is usually filled from the city water line. The exception is winterizing & de-winterizing when anti-freeze or bleach water is added. If I was in your situation I would consider adding those two items from the inside.

Of note, the tank needs venting for both filling & emptying - a job usually handled okay by the exterior fill.

Tom
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Old 04-22-2021, 02:02 PM   #3
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1968 20' Globetrotter
ANN ARBOR , THE GREAT LAKES
Join Date: Apr 2011
Posts: 644
Possibly...

One can never speak of airstreams in absolutes, but...


If the salon of your trailer is "Double" it will have a low, flat tank under the front gaucho.

If the salon of your trailer is a "Twin" it will have a tall, narrow tank against the front wall, between the dinette seats.

You have a new "Twin" configured tank, that will not accommodate a "Double" configured salon.

You need the flat tank to solve your problem neatly.

If the third to last digit of your serial number is 5 or greater, your trailer is a "Double", and was designed with a low fill-neck for a flat tank.
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Old 04-22-2021, 04:18 PM   #4
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1968 20' Globetrotter
ANN ARBOR , THE GREAT LAKES
Join Date: Apr 2011
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oops,

So if you look at the archive images,

https://www.airstream.com/wp-content...ations-231.pdf

Turns out that all 1968 Overlanders may have had the low tank, and the tall tank you have is for a 1968 TradeWind "Twin" or Safari "Twin".

A front gaucho won't fit over the tall tank.
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Old 04-23-2021, 10:36 AM   #5
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1968 26' Overlander
2021 20' Caravel
Denver , Colorado
Join Date: Jul 2015
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I bought one years ago for a 1968 Overlander from vintage trailer supply. They had a full selection by year and model. https://vintagetrailersupply.com/int...holding-tanks/
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Old 04-23-2021, 10:37 AM   #6
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1968 26' Overlander
San Francisco , California
Join Date: Jul 2020
Posts: 8
Thanks all! Looks like I have the double. Won't matter to me if a gaucho won't work - all that had been torn out earlier anyway. And I plan on building a custom couch/bed area anyway.

Currently, the tank dimensions are 11"x11"x54", with its inlet opening at 12.5", which is about 5" above the bottom end of the external water inlet port. A flex line would work, but wondering if I should get the right tank for the cleanest solution, like https://vintagetrailersupply.com/53-...8-71-vts-1004/ . This way I won't have to figure out some pressurized way to get municipal water through a serpentine hose.
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Old 04-23-2021, 12:46 PM   #7
NO HUMBLE OPINION
 
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1968 20' Globetrotter
ANN ARBOR , THE GREAT LAKES
Join Date: Apr 2011
Posts: 644
relocate/patch

Aside from aesthetics and originality, no reason not to drill out fill-neck rivets and relocate to suit tall tank. Olympic rivets, and you choose shape of patch.


https://www.airforums.com/forums/f38...hes-68104.html
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Old 04-23-2021, 02:42 PM   #8
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1976 Argosy 24
1961 28' Ambassador
1968 26' Overlander
Lakewood , Colorado
Join Date: Jun 2014
Posts: 115
Faced the same thing when redoing my '68 Overlander, trailer had nothing in front when I got it. I went with the 12x12x54 from VTS and they put fittings where I wanted. I was going for max storage under what is a twin xl pullout to 50x80 bed. 3 giant drawers under bed. I decided to go with fill and vent inlets on top of the tank, others have put them on the side, I liked top for less chance of leaks. Mocked it all up and decided where to put the fill, probably 12" higher. You can see the fill is over the top of the tank so the tank stays centered. With a 6" foam mattress the bed is maybe 1' too high at 21" but I'm 6'. Outlet and drain are SS as low as possible, vent pipes down to drain hose.
Good luck, Mark D
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