jwcgc29
Wirtz, Virginia
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Thanks for the input Bill. Most gas cans (plastic) have a fill line indicated on them that represent the 5 or 2 or 1 gallon line, so accuracy shouldnt be a problem. I cant really see how the depth of penetration into the tank by any given DWV plumbing would affect the overall capacity to any noticeable degree. The plumbing between the tank and the fixture drain would add some capacity, but not usable in the real world.
Those of us who have researched the tank makers specs show that the 5th wheel manufacturer has overstated the capacity by amost 30 percent and they are now saying they dont know how it happened and that is wasnt actually their fault. Nothing like taking responsibiity for your mistakes !!
08 Carriage Cameo F34CK3
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jwcgc29
Wirtz, Virginia
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No one is "fussing" about tank capacity. My shower flows 1 GPM. If I know the capacity of my grey tank, I know how many mintues I can shower before filling the tank. I apologize for wanting the know the facts. As for sharker 6 checking the dimensions on the tank drawing, what part # are you referring to ? Ameri-Kart lists HT512 and HT 513 as 40 gallon tanks right on the engineering drawings. Why waste your time calculating capacity when the tank manufacturer has done the hard work for you and have already considered wall thickness, shape intrusions. etc. As for DWV drain piping extending into the tank limiting capacity, please explain. Fluid will find it's own level, no matter where the outlet ends in the tank. It will eventually entirely fill the HT tank, except perhaps for trapped air, and will overflow at the lowest fixture drain in the system.
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donn0128
Pronounced Ore-gun
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 The OP says he will not reveal the manufacturers name, But his signature clearly indicated the trailers brand. Go figure 30% sounds like a lot, but in reality on a 30 gal tank that is only what??? 3 gallons. So what? 95% of the people buy for capacity but never go dry camping long enough to actually need all the capacity of the tanks. How many posts are there here from people with "large" tanks and have a dried crud problem because they do not use enough water. Full tank, I simply find a place to dump it. Empty potable water tank. I hook up the white hose and fill it. I really don't care two whoots the if the actual capacity is off by 3 gallons.
Donn
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skipnchar
Topeka Kansas USA
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For what it's worth: If you read the small print on every RV brochure there is a disclaimer that specifications are subject to change without notice. I'd suggest you learn to live with what you got. Good luck / Skip
Rockhillmanor wrote:I've stated it before but 'my' revelation was when I found out my shower dumps into the gray tank.
Specs DIDN'T mention that lovely feature on my RV
Just curious...where did you EXPECT them to empty into? I'd be a lot more concerned if my manufacturer displayed the sense of humor some have and plumbed it to the black tank 
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jwcgc29
Wirtz, Virginia
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Signature clearly indcates the trailer's brand ?? The signature is a combination of initials and a date, and has nothing to do with any brand of 5th wheel.
The grey and black capacity is off by a total of 30 gallons...not 3. And 30 percent of your hypothetical 30 gallons is 9 gallons, not 3....and we do semi-dry camping(no septic) frequently and dont care to hook the 5th wheel up and tow it to a dump station because the tanks are of insufficient capacity.
Please give "two hoots" about facts and correct mathematical calculations before dissing on my initial post and/or concerns.
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FormerBiker
Wildomar, Riverside County, CA 25OR624
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donn0128 wrote: Go figure 30% sounds like a lot, but in reality on a 30 gal tank that is only what??? 3 gallons.
Hmmmmm.....
30% = aproximatly 1/3
1/3= 33.3333333%
1/3 * 30gal = 10gal.
There is an aproximate 10 gallon loss not 3.
Me thinks someone needs more arithmatic lessons.
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jwcgc29
Wirtz, Virginia
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Skip...good point, certainly worth considering and as an advertising and marketing copywriter, one of the first issues I researched, however, the manufacturer failed to include this disclaimer on their website specs page. To their credit, they are not currently using this as an "out". They have admitted the tanks are not of the stated capacity and that they were unaware of such, essentially eliminating misprint or change in design as a defense. Ignorace and incapacitty are not typically a desirable explanations for the errors of large corporations. I can live with it, but it places my 5th wheels HT capacity far below that of the competition and now that the facts are known, can adversly affect the resale of the unit, as I will not lie to any future buyer.
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jwcgc29
Wirtz, Virginia
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outdoorsman2007 wrote:The tank may very well be the size the manufacturer stated in the literature, but if the pipe ends down in the tank, it will limit the amount of fluid the tank will hold.
Ameri-Kart says 40 gal on engineering drawings. 5th wheel manufacturer states a capacity almost 30 percent greater. Cant see how DWV pipe intrusion fits into the equation. Please help me out here ?
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outdoorsman2007
In the Woods - Somewhere!
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jwcgc29 wrote:outdoorsman2007 wrote:The tank may very well be the size the manufacturer stated in the literature, but if the pipe ends down in the tank, it will limit the amount of fluid the tank will hold.
Ameri-Kart says 40 gal on engineering drawings. 5th wheel manufacturer states a capacity almost 30 percent greater. Cant see how DWV pipe intrusion fits into the equation. Please help me out here ?
Well first the 08 Carriage Cameo F34CK3 from your signature, which is what I assume you are speaking about, has a 55 gal black, a 55 gal gray, and an 82 gal fresh (including the hot water tank) per the nameless manufacturer's website.
Pipe intrusion has nothing to do with the equation you mention above but let me explain how it does affect things. If you have a tank that is 12 inches deep and has a capacity of 40 gallons, if the fill and vent pipes enter the tank from the top and intrude into the tank 6 inches you have now cut the capacity of the tank in half.
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donn0128
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Guess my mind was still fuzzy from lack of coffee. OK it is off by 10 gallons. IS that a total of all the tanks? Heck I can go for over a week without dumping my black tank. As for the grey tank, there is always a teepee for that close by. So again it really does not bother me that much.
It is probably as simple as the manufacturer changed tanks or suppliers and has not changed the brochures yet. Like someone said earlier there is a disclaimer at the bottom of the brochure. Heck, if I wanted to get in a snit I could complain about my advertised pin weight at 1600 pounds and the actual is close to 3000. Things are designed a certain way and during manufacturing things get changed all the time. Remember the flap a few years ago about Cadddies being shipped with Chevrolet motors in them?
Here is their disclaimer directly from the web site.
Due to continual improvement of Carriage Inc. products, we reserve the right to change material, colors, specifications and prices at any time without prior notification. Selected decorator items used in the photos are not part of the product, Carriage Inc. assumes no responsibility for any error in type or print reproduction of specifications or color in this brochure.
Personally I think I would be more concerned with the towing capacity of your 2500HD with a fifth wheel that has a GVWR of almost 15,000 pounds than an error in the brochure for tank capacities.
Sorry if you disagree it is JMHO!
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