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07-22-2014, 11:33 AM
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#1
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1 Rivet Member
1983 31' Excella
Quincy
, Florida
Join Date: Jul 2014
Posts: 4
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External freshwater tank...am I nuts?
Hey guys,
I hope this isn't too laughable. We are some newbies brainstorming about systems for our 83 Excella (just frame/floor/shell, everything else will be built form scratch).
We were wondering if it would be possible/viable to keep our freshwater tank externally...for a couple of reasons. One, we plan to live in the trailer full time, and when we're parked, we want to put in a rainwater collection/filtration system. Seems easier with external barrels/tanks. Two, we'd like the option to not have to move our entire trailer in order to fill the freshwater tank, if there wasn't a good water source where we end up staying. We could drive it, fill it cheaply, then come back to the trailer and hook back in. Ideally, we'd also be able to plug into city water when/if available.
Ok, can y'all imagine this working out at all? Any ideas, or big cons? Thanks for humoring me/any input you might have.
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07-22-2014, 12:08 PM
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#2
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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I would not recommend removing the in house FW tank. An Auxiliary tank in the TV to replenish the onboard tank is what I do. I have the Aux tank rigged up with a pump and simply plug it in to the trailer connector on the TV for power to run the pump.
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07-22-2014, 12:51 PM
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#3
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Assuming you don't have a freshwater tank to remove, and are looking to start from scratch, you still need an onboard freshwater tank permanently connected to your demand water pump. Otherwise getting the pump primed and keeping it primed will be a perennial problem.
If your onboard supply isn't adequately large, you can refill the onboard tank from blue Jerry-cans without much trouble. And you can use your rainwater filtration system to fill the blue Jerry cans in the first place.
You'd still be able to hook into city water when available. Most RVs have a separate municipal water hookup that bypasses the water pump (and check valves to keep one system from back-feeding into the other).
__________________
I thought getting old would take longer!
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07-22-2014, 01:34 PM
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#4
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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You can buy water tanks that fit in the bed of a pickup. Fill these up and you might be able to gravity feed this into your AS on board tank. If not then an inexpensive pump can be used to fill the AS tank. You would need a lot of rain to fill buckets from the runoff from the AS roof. Jim
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07-22-2014, 02:07 PM
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#5
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Rivet Master
2000 25' Safari
Davidson County
, NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,493
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I also think it's best to keep a permanant FW tank in the trailer.
Another issue; if there is a full water tank in the truck bed, in addition to the trailer's tongue load, it might exceed the truck's payload when towing. It's better to keep the weight of the water on the trailer's axles.
__________________
Alan
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
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07-22-2014, 02:11 PM
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#6
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Rivet Master
Currently Looking...
Mantua
, Ohio
Join Date: Jul 2005
Posts: 7,062
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After the trailer us set up and you have used most of your water, then you go fill the truck bed tanks. Jim
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07-22-2014, 02:23 PM
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#7
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Rivet Master
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach
, Virginia
Join Date: Sep 2004
Posts: 7,801
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Second what others have said about keeping internal fresh water tank. Additionally, you not only need to consider what happens as you get low on FRESH water, but what's happening to your gray and black water tanks. If you're not in a site with a sewer to dump into you're going to have to move gray/black water TO a dump site. There are external "blue boy" tanks... or you move your trailer! If you move the trailer, it can be an opportunity to refill the white tank too.
Paula
Oh, and the gray and/or black tank always fill up one day before you're planning to leave, Murphy's Law. Gray fills first - prolong your stay by manually dumping dishwater/shower water down the toilet, but watch out for stray forks in the dish pan!
__________________
Today is a gift, that's why they call it the present.
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07-22-2014, 02:52 PM
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#8
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Rivet Master
1999 34' Excella
Currently Looking...
Hillsboro
, Texas
Join Date: Feb 2013
Posts: 6,408
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One advantage to the fresh water tank is to lower the CG of the trailer. I have seen videos of an AS running a chicane and the difference is remarkable how much "roll" you get with an empty fresh water tank.
__________________
Peace and Blessings..
Channing
WBCCI# 30676
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07-23-2014, 09:53 AM
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#9
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1 Rivet Member
1983 31' Excella
Quincy
, Florida
Join Date: Jul 2014
Posts: 4
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This has been really helpful folks- looks like refillable cans kept in the truck are the answer. In terms of weight, the trailer will not be connected to the truck most of the time, so the additional weight in the truck bed shouldn't be too much of a problem. I was just hoping to save some space in the trailer. Re: rainwater- we were going to build a shed-like structure to collect rainwater, I couldn't even begin to imagine getting anything off the smooth, rounded AS surface!
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07-23-2014, 12:33 PM
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#10
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Rivet Master
1973 21' Globetrotter
Houston
, Texas
Join Date: Sep 2009
Posts: 3,320
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Where is the fresh water tank in your trailer? Is is not under the floor like they were in the 70's?
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07-23-2014, 12:41 PM
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#11
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Rivet Master
1995 30' Excella
Bowie
, Maryland
Join Date: Apr 2005
Posts: 2,345
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Quote:
Originally Posted by BearBones
I was just hoping to save some space in the trailer.
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The space you'd be saving is under the floor...not really useful for much other than water tanks anyway.
__________________
1995 Airstream Classic 30' Excella 1000
2014 Ram 2500 Crew Cab with Cummins 6.7L Diesel
Sold but not forgotten: 1991 Airstream B190
Sold: 2006 F-250 6.0L Powerstroke Supercab
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07-23-2014, 05:23 PM
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#12
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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In my '74 Argosy. The grey water tank is the only tank under the floor.
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07-23-2014, 05:38 PM
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#13
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Rivet Master
2009 27' FB Flying Cloud
1982 31' International
1991 35' Airstream 350
Jay
, Oklahoma
Join Date: Oct 2006
Posts: 1,706
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And, to be useful, the freshwater tank must be protected from freezing.
Some freshwater tanks are installed in the living space for this reason.
In other cases, the tanks are in a enclosed belly pan that has furnace heat directed into the space.
Regards,
JD
__________________
Jeff & Cindy
'09 27FB Flying Cloud;'82 31 International
'91 350 LE MH; '21 Interstate 24GT
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