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Old 03-29-2020, 12:13 PM   #1
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1990 29' Excella
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Anybody know size of fresh, grey, black tanks..

For a 1990 29 ft Excella?

Im wasting my whole morning trying to find this info.

When I fill the fresh all the way up, and if most of it goes to the gray tank, Iím finding I can fill up the gray to the point where it starts coming up out of the shower drain.

Boondocking with no hookups.
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Old 03-29-2020, 12:23 PM   #2
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Airstream has all this online.

https://www.airstream.com/wp-content...atures-459.pdf

Looks like:
50 Fresh Water
30 Black
35 Grey
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Old 03-29-2020, 01:16 PM   #3
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FYI, you can download a manual for your trailer here>
https://www.airstream.com/wp-content...-manual-76.pdf
That same info is also in the Specification section, "I", in the manual.
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Old 03-29-2020, 02:11 PM   #4
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If you find you're filling the gray but nowhere close on the black (typical with a gravity toilet) you can put a bucket in the shower to catch some of the splash and soapy water off you, and use that for flushing the toilet (when you have water in the bucket.) That both captures some of the water that would've filled your gray tank, and lets you use some graywater for operating the toilet.
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Old 03-29-2020, 02:16 PM   #5
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Quote:
Originally Posted by DKB_SATX View Post
If you find you're filling the gray but nowhere close on the black (typical with a gravity toilet) you can put a bucket in the shower to catch some of the splash and soapy water off you, and use that for flushing the toilet (when you have water in the bucket.) That both captures some of the water that would've filled your gray tank, and lets you use some graywater for operating the toilet.
Good idea, I also heard about using a dish basin in the sink (think liner) while doing dishes and pouring this down the toilet instead of draining to grey tank...
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Old 03-29-2020, 08:53 PM   #6
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1990 29' Excella
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I did download the pdf manual to my phone. Went into section I specs and didn't see the tank info. Of course I am senile, so that could explain it.



The 50/30/35 explains why I can so easily flood my shower.


Thanks for the info!
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Old 03-30-2020, 04:08 PM   #7
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1990 29' Excella
Stone Mountain , Georgia
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Quote:
Originally Posted by groundhogy View Post
For a 1990 29 ft Excella?

Im wasting my whole morning trying to find this info.

When I fill the fresh all the way up, and if most of it goes to the gray tank, Iím finding I can fill up the gray to the point where it starts coming up out of the shower drain.

Boondocking with no hookups.
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As others have suggested, its 50 Fresh, 35 Grey, and 30 Black. We have a 1990 Excella 29' also. Do you have rear twins?

Depending on what kind of situation you are in boondocking, how you manage your water depends on your circumstance. In the 1970s when we boondocked for 30 days at a time in the Wyoming Big Horn mts. we were able to just pull off the dirt Forest Service roads 100 or more feet and set up camp. Waste water? Dig a hole! Black water? Dig a deeper hole! Need fresh water? We had a 40 gallon metal barrel in the back of our pickup and we would go fill it up, close the top and drive carefully 5-10 miles back and siphon it down into our fresh water tanks. Boondocking in a National Park today would be much more circumscribed in what you could do.

Suggestions about catching water in buckets and using it in the toilet really do work. Carrying a pan of dirty kitchen sink water works until you slosh some over on the floor, but maybe you are accident free. But if there is a will, there will be a way. Enjoy your Excella, we love ours.

+dcasr
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Old 03-30-2020, 09:42 PM   #8
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1990 29' Excella
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Hi dcasr,
Yes we do have the two beds in the back.
We are in Quartzsite at the moment. I guess we are waiting here until the environment becomes more hospitable for moving.
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Old 03-30-2020, 10:49 PM   #9
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You could install a compost toilet. Then, even if you plumb the urine into black tank, You will still have more holding capacity than what is in you fresh water tank.
I did just that. Talk about convenience! For extra water hauling I use a bladder on the roof of my truck to faucet fill then gravity drain into the fresh water tank. Camping World has the bladders. I got mine years ago and it still works fine. you just can't take curves very fast. It would cool off.
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