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Ace (24.28.44.58)

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Posted on Sunday, May 16, 2004 - 6:15 pm:   

getting ready to make my tanks and I know this has been adressed before but like many others those answers have long been forgotten so here is my question.

How or what is the best way to figure amount of gallons for a round tank that measures 24 inches in diameter and 54 inches in length? Also another tank that measures 26 inches long and 24 inches in diameter?

If my idea works out mathematically, I should end up with a pretty unique design for holding tanks and Diesel generator tank.

Thanks... tig welder at work!

Ace
R.J.Bob Evans (64.110.227.72)

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Posted on Sunday, May 16, 2004 - 6:39 pm:   

A cubic foot contains 6.24 imperial gallons or 7.5 of those wimpy things you Yanks call a gallon.

Pi R squared times height for the cubic feet so:

3.14(1)(1)(4.5)= 14.13 cu ft = 88 real gallons
deacon (150.199.209.12)

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Posted on Sunday, May 16, 2004 - 6:40 pm:   

This makes it easy

http://www.watertanks.com/calc.asp

John
Scott Whitney (69.35.62.177)

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Posted on Sunday, May 16, 2004 - 7:10 pm:   

Also you can Google the answer. Just type in, for example:

36 inches * 24 inches * 56 inches in gallons

BTW, this works for all sorts of calculations, unit conversion and mismatched units etc. . .

Scott
P.S. the example is 209.454545 US gallons, or it is 160,861.09 US teaspoons in case you were wondering. . .
TWO DOGS (158.254.224.232)

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Posted on Sunday, May 16, 2004 - 7:28 pm:   

OR...if you make them square....2'x2'x2'=60 gallons & a BUNCH of space not wasted
Buswarrior (Buswarrior) (64.229.208.164)

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Posted on Sunday, May 16, 2004 - 9:24 pm:   

Give 'em hell RJ!

But if you have difficulty crossing the border at some point in the future, best to remember there is a price to be paid for our superiority!!!

Maybe we should all go metric? only one size of them?

signed:
a Canadian who knows what a real gallon is, but converts to assist his misguided American friends (please don't pick on me, I'm trying to help!)

Ace, why round? I'm with 2D, square 'em off, there's a ton of capacity in the corners!

happy coaching!
buswarrior
TWO DOGS (65.179.201.14)

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Posted on Sunday, May 16, 2004 - 10:00 pm:   

yeah.....30"x30"x30 = 116 gallons & they stack..might as well make them out of 16ga. stainless
Henry R. Bergman, Jr. (Henryofcj) (63.224.197.10)

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Posted on Monday, May 17, 2004 - 3:26 pm:   

But do not forget if that the tanks are very THICK the total amount of it will be less.

And....if you climb up real high in elevation the suck of the earth will be less and the amount...

...in your round tanks will weigh less and therefore be different than at sea level.

Plus too, we need to figure the temp as this makes a big difference in how much stuff you gots.
:) :)
Ace (24.28.44.58)

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Posted on Monday, May 17, 2004 - 9:09 pm:   

Thanks for the site that had the quick find formula!

WHY round, you ask? Well first off they are good clean fuel tanks availlable for "free" at many truck shops and demo yards. Not only is the price right but they are easy to work with and modify by simply cutting and tig welding back to the exact size you want as in my case. One 7 foot long 2 foot round polished aluminum "free" fuel tank will be cut down to 2.5 feet long for our diesel generator. That part will already have the existing tanks fuel cap, vent, fuel outlet and return fittings. The larger part will be used for our black and grey tank combination and will be strapped to underside of floor main frame right below the toilet on one side and shower on the opposite side. I will have enough pitch in the mounting to allow for easy drainage. I plan to mount this tank this way which will still give me ample storage on the existing bay floor below the tank. I have found that more space is wasted if you build from the floor up. I'm taking the other approach and starting at the top and moving down! I'm not wasting ANY space so to speak by using round because the bay door hinges would interfere with any type I put on the floor. The round will be able to go between the hinges on BOTH sides and allow for drain pipe from both toilet and shower. It will definitely be one of a kind when I'm thru and being it's polished should get alot of attention!
The calculations say that my tank for the generator will be approx. 58.75 gals and the holding tank will be approx 105.75 gals. all of which will be out of the way.
I'm not worried about having that much sludge at one time even though most of you think I'm more than capable of dishing out that much, I plan on keeping it empty as much as possible. As for the gen tank? With 58 gals of fuel, I estimate approx 1 gal to one hour or somewhere close and that would give me around 50 hours of generator usage non stop. Again, Something I don't intend on having to do but just in case I'll have it if I need it!
Not looking for any debates on math or approximations. Just doing it MY way and the even though it's a Prevost, I'm still looking to be cheap!

Thanks again and when I get a chance, I'll post some pics of the progress!

Ace & $usan
Richard Bowyer (Drivingmisslazy) (66.168.168.57)

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Posted on Tuesday, May 18, 2004 - 6:55 am:   

Ace, just curious. Why separate tank for the genset?
Richard
Ace (24.28.44.58)

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Posted on Tuesday, May 18, 2004 - 7:18 am:   

This is our FIRST and LAST Prevost and the tank is pretty well hidden up inside someplace. I have most everything original working pretty good and don't want to butcher, cut, drill, or remove unless it's absolutely necessary! Bottom line is, it's just easier for me to fabricate the tanks from what I already have than to modify original equiptment and hope it still works like it was intended to!

Ace
DrivingMissLazy (66.168.175.51)

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Posted on Tuesday, May 18, 2004 - 11:30 am:   

Ok, thanks. I suspected there was a pretty good reason.
Richard
H3Jim (68.107.62.94)

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Posted on Tuesday, May 18, 2004 - 5:17 pm:   

Ace,
I don't know about the H3-40's, but the H3-41 seated coach comes with a fuel tank that already has dip tubes and return bung for a genset. That's in addition to the other two, one for the engine and one for the Espar preheater. All thats required is run lines. Doesn't get any easier or cheaper than that.
Ace (24.28.44.58)

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Posted on Wednesday, May 19, 2004 - 1:03 am:   

MY h3-40 from what I can tell does not have any extra dip tubes or fittings. I guess because it never had a webasto or other!

Ace
Gary Carter (68.25.22.118)

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Posted on Thursday, May 20, 2004 - 11:07 am:   

A seperate fuel tank for the genset allows you to legally use tax free fuel in that tank.

My problem is that every time I find tax free fuel my genset tank is close to full.
Johnny (68.0.241.248)

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Posted on Sunday, May 30, 2004 - 7:55 pm:   

Tell tyhe guy at the Flying J it's "reffer fuel" or "genset fuel". They won't charge tax.
TWO DOGS (65.179.208.65)

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Posted on Monday, May 31, 2004 - 1:20 pm:   

I don't believe that.
Johnny (4.174.112.122)

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Posted on Sunday, June 06, 2004 - 12:23 pm:   

Then you plainly don't fill up at good truck stops.

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