Water Tank placement and size?

[BCrab]

I know I ask a lot here lol. And thank you all so much for all your info.
so for my enclosed trailer build.Fresh water storage. I’m looking at enough for two people to quick shower etc on a overnight trip. Thinking 15 gallon? I thought about maybe a under mount but as of right now with 30” tires I have 15” from bottom of trailer.A tank would prob hang down 5” bellow that. Thought about building a metal and wood frame and doing that. With thishttps://www.amazon.com/Class-Customs-UM-1500-UnderMount-Concession/dp/B07LB86J6R/ref=pd_aw_di_ci_mcx_2l_mi_ca_mcx_picks_views_22?pd_rd_w=WvJEe&pf_rd_p=3fe70698-0cfc-4664-ada9-f60598343b42&pf_rd_r=DJCFR670JH3G9BV7PC94&pd_rd_r=5e934486-9a16-449b-9378-4e63b0d89810&pd_rd_wg=L0pzm&pd_rd_i=B07LB86J6R
But I’ve also considered mounting one on roof rack.
what your thoughts? Pros and cons?
Right now the trailer pulls better than I could have thought. I don’t want to upset that part.
thank you
Crab

 

[john61ct]

Lower the better. Roof rack no way.

Centered between the wheels if possible, right over the axle best,

otherwise close as possible, keep ball weight around 10% of total.

Look at bladders, multiple ones gives flexibility.

Do your highway LD driving empty maybe, then fill up once you're driving slowly.

Personally I consider 1gal/day/person enough, but that's for long stays off grid.

 

[BCrab]

Lower the better. Roof rack no way.

Centered between the wheels if possible, right over the axle best,

otherwise close as possible, keep ball weight around 10% of total.

Look at bladders, multiple ones gives flexibility.

Do your highway LD driving empty maybe, then fill up once you're driving slowly.

Personally I consider 1gal/day/person enough, but that's for long stays off grid.

Thx brother. Good info. I want to have little extra gallon for quick showers etc. so I’ll prob order a 10-16 gallon and fit right over axle then. Should have enough room there. I plan on adding a camp water heater in back.

 

[Buddha.]

With a variable load like that I would want it low and close to the axle. If you mount it too far forward or back your tongue weight is gonna fluctuate a lot.

 

[1000arms]

You might look at the following link to find a tanks, or tanks, that you like, then order through whatever company works best for you:

Water / Waste Holding Tank - Ronco Plastics

Marine tanks are suitable for all marine plumbing, waste holding, and water supply needs. The tanks are rotationally molded of a seamless one piece, non-corrosive linear polyethylene and meet FDA regulations. Three female NPT (national pipe thread) fittings are provided free of charge...

ronco-plastics.com

You might also consider cheap "portable water jugs" that you could move around, and balance your load as need be.

As others have mentioned, I will also suggest mounting any permanent tank as low, centered side to side, and over the axle, as possible.

 

[slimtwo]

I placed my WT right behind the axle line. As the others have mentioned, the closer to the CG (Center of Gravity) the less it will affect your tongue weight.

 

[Teardropper]

I’m looking at enough for two people to quick shower etc on a overnight trip. Thinking 15 gallon?

We have a seven-gallon tank in our teardrop that is good for three days for the two of us.

But we use this for showers:

That's three gallons but it's good for a week. (FOR US.)

I have no idea how much water you will use during a shower –or for that matter cooking/cleanup– but for planning purposes, firefighters plan on 1 gallon per person per day unless it's really stinking hot.

As they say, your mileage will vary.

Tony

 

[john61ct]

Yes +1000 Ronco is top notch

 

[Alloy]

I placed my WT right behind the axle line. As the others have mentioned, the closer to the CG (Center of Gravity) the less it will affect your tongue weight.

View attachment 679719 View attachment 679720

You want it to affect the tounge weight.....

 

[john61ct]

If you are well balanced front to back without the water (10% tow ball weight)

then your poor placement negatively impacts the balance when filling the tank

can indeed become a danger factor as driving speed is increased.

 

[broncobowsher]

As stated, not on the roof. Even worse if you ever had half a tank of water sloshing around up there.
Water is heavy. Low and centered is best.

Something I have done on my latest and has been working great is using a Korny Keg. 5 gallons that in the past was used for soft drinks (before the bag in box was common). These days it is used a lot in home brewing. Compressed air is the driving force (do you have compressed air? Do you want to add it?). Take them in and out as needed. Size per needs. 5 gallons can go a LONG way if you are not wasteful. Easy to fill, drain, clean, dry, store... They can be bought used, cleaned up and put in service. Or they still make them brand new.

 

[Old Tanker]

You want it to affect the tounge weight.....

You want tongue weight, but not variable tongue weight from a water tank that will sometimes be full and sometimes empty.

 

[BCrab]

As stated, not on the roof. Even worse if you ever had half a tank of water sloshing around up there.
Water is heavy. Low and centered is best.

Something I have done on my latest and has been working great is using a Korny Keg. 5 gallons that in the past was used for soft drinks (before the bag in box was common). These days it is used a lot in home brewing. Compressed air is the driving force (do you have compressed air? Do you want to add it?). Take them in and out as needed. Size per needs. 5 gallons can go a LONG way if you are not wasteful. Easy to fill, drain, clean, dry, store... They can be bought used, cleaned up and put in service. Or they still make them brand new.

Never considered that. I have easy access to nitrogen and tanks. But hadn’t thought about compressed. I was considering pumps amd tanks bc I plan on having a water heater for quick winter showers. I already have a iron man shower kit coming. Havnt bought a water heater or any water storage yet. Might just try cheap bottles first. Amd then later permanently mount after getting size needed. I’m sure I could easily feed a portable water heater from 5 gallon jugs thou.