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Old 08-08-2019, 04:09 PM   #1
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Trailering with full FW tanks?

I put 15k miles on my last TT, all of them with a full, 42-gal, Fresh Water (FW) tank (empty grey and black.). After buying my new JayFlight 248RBSW with Baja and Rocky Mountain packages, I am reading one should never travel with full FW tanks.
Can anybody say why that is? I find it difficult to believe Jayco doesn’t know how to support two 38-gal FW tanks inside a full liner.
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Old 08-08-2019, 04:47 PM   #2
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Some people have posted they have lost their tanks.

I have towed short distances with full tanks, maybe 50 miles max.
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Old 08-08-2019, 05:05 PM   #3
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I think that many people just don't want to haul the extra weight. Personally I always have my tanks filled whether at home or heading out. Having a trailer or motor home full of water and the such also makes a nice emergency home. I live in Southern California and have my motor home basically ready in case there is a big earthquake or other natural disaster (visiting relatives?).

Yes the water weighs a lot but that is a given. If the tank cannot handle the weight then it was not properly installed. You can always peek under and see if it looks solid.
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Old 08-08-2019, 05:16 PM   #4
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The tank supports are (hopefully) enough to support the static weight of the tank ( about 350 pounds, if those are 42 US gallons).

However, when you bounce it up and down on a rough road, the dynamic load is considerably more, so a couple of good potholes could leave your tank in the dust.


If I had more confidence in Jayco construction standards, I'd say "go ahead"...
But I've looked under mine...
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Old 08-08-2019, 05:18 PM   #5
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I always leave home with my 65 gallon tank full of soft water. My wife is fussy about her hair and prefers soft water when washing her hair...


Having once broke down crossing the desert in summer I was very glad my tank was full. The extra weight for me is not a concern when it comes to convenience and safety. It also helps reduce the buffeting from passing semi-trucks, as well as swaying in high crosswinds.

If my tank is refilled at a campground I always drain and sanitize it when I get home. While at home I keep it filled for any unforeseeable emergency.
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Old 08-08-2019, 07:14 PM   #6
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Always travel with full FW-Tank. Always be sure the support hardware is strong enough and if in doubt have a professional RV mechanic look at it. Manufacturing processes are going the lean way, so I don't trust them.
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Old 08-08-2019, 09:51 PM   #7
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We always travel with 80gal fresh water for safety and convenience reasons.

We keep our FW nearly full in campgrounds, too. That was especially helpful in one campground where a failure of the city's pumps left the CG without water for a day.
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Old 08-09-2019, 05:20 AM   #8
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We run with 1/3 full so we can flush the toilet and navy shower if stuck. Also, we keep a couple of gallon milk hugs full in the bathroom. We never needed more than this even when we broke down.
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Old 08-09-2019, 05:30 AM   #9
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Quote:
Originally Posted by Edpare View Post
I put 15k miles on my last TT, all of them with a full, 42-gal, Fresh Water (FW) tank (empty grey and black.). After buying my new JayFlight 248RBSW with Baja and Rocky Mountain packages, I am reading one should never travel with full FW tanks.
Can anybody say why that is? I find it difficult to believe Jayco doesn’t know how to support two 38-gal FW tanks inside a full liner.
I travel with about 1/3, 2/3 or full FW tanks, depending on where we are camping, and particularly how long.

I'll share a story about Jayco freshwater tanks though. Earlier this year, I took my 2017 J Flight 23RB in for some warranty work, specifically the FW tank monitor wasn't registering any longer. I know those things are notoriously inaccurate, but the FW monitor will usually be within ballpark.

They found that the ground wire had come loose. However, unbeknownst to me, since the bottom is covered with the Cloroplast covering, about 4 of the "clips" that hold the FW tank had already failed. The dealer replaced them under warranty.

So to your question, I guess Jayco doesn't know how to mount water tanks for long term service. IMO, those tanks should have metal straps from cross frame to cross frame to hold them in place.
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Old 08-09-2019, 05:43 AM   #10
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Thanks. We're going to have work done on the fresh water tank. Now we'll have that checked and fixed
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