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Old 03-27-2016, 04:24 PM   #1
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Does full water tank increase tongue weight?

Looking for a quick answer here. Water storage tank only. 2002 25' Classic. I'm not near my trailer to look, but I thought the tank is centered over the axles. Thanks!
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Old 03-27-2016, 04:45 PM   #2
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I have a 25fb and my tank is over the axles. I've never weighed my tongue with the tank full but with it over the axle I wouldn't think it would be anything to worry about. I wonder when the tank is half full if the sloshing makes a difference to where you should either have it almost empty or almost full to have the least affect.

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Old 03-27-2016, 06:09 PM   #3
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Thanks- that is what I needed to hear. I'm setting up a new Blue Ox hitch and just went to the scales with some weight in the trailer (not a lot, but forward of the axles), NO propane tanks, empty tanks, and batteries in...my tongue weight was 1100 lbs. The propane tanks will add approx 112 lbs to the tongue weight, so I will be at 1212 TW. Manual says I need to be 1000lbs max. So need to do some weight distribution!
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Old 03-27-2016, 07:04 PM   #4
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My tongue weight is close to 1200lbs weighing at the jack with a Sherline scale. I haven't bothered to try to reduce it. I towed it for 2 years with a 2010 Tundra and now a Ram 2500 CTD. I use an Equalizer with 1000b bars.

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Old 03-27-2016, 07:34 PM   #5
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It would be useful to weigh an Airstream at the jack and again at coupler, there is a difference (heavier at the jack). If you want to know how much weight you are placing on the truck's receiver ball, you would have to weigh it there.

The trailer must be dead level and parked on level ground for an accurate weight.

Airstream warns not to exceed 1,000 lbs in the Owners Manual. I can only imagine they must be referring to weight measured at the coupler.

Why does Airstream spec this weight limit? At least two possibilities come to mind. Strength of the A-frame and welds to the trailer frame. And/or stability, too much weight at either end of the trailer can amplify a sway condition, make it more difficult to recover.
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Old 03-27-2016, 07:38 PM   #6
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I wonder why the tongue weight of some trailers is way more than Factory specs, and mine is less? My 2016 FC25FB twin has a tongue weight of 820 lbs. (per Sherline scale) with full propane tanks and with batteries, but empty tanks. That's a touch under what the factory advertises. Any ideas? The empty weight of my TT is 5,700 lbs.

I can't figure out what's going on here...but I like the answer for me.
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Old 03-28-2016, 10:04 AM   #7
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Bob, do you travel with your trailer empty? The empty weight is an interesting number, useful for calculating your carrying capacity, but not much else. Your weight, loaded for actual use, is much more useful.
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Old 03-28-2016, 12:25 PM   #8
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I would think a full water tank does not increase tongue weight because the tank is centered over the axles.
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Old 03-28-2016, 02:44 PM   #9
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Quote:
Originally Posted by m.hony View Post
I would think a full water tank does not increase tongue weight because the tank is centered over the axles.
My 25' and 30' FC, manual told me to weigh the tongue weight with the fresh tank full., propane tanks full, batteries installed and so forth, (travel weight).
It also said that in "No case should the tongue weight exceed 1000 lbs."

Hmmm. Makes me wonder about these 1200 lb. TWs that I'm reading about.
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Old 03-28-2016, 03:54 PM   #10
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I know the trailer rides smoother with a full fresh water tank.


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Old 03-28-2016, 04:30 PM   #11
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The tank on our 66 is on the floor up against the front wall of the trailer , from the factory . and yes it would make the tongue heavier .
The tank on the 2005 is under the floor just ahead of the front axle , and yes , it would add a small portion of the weight to the tongue.
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Old 03-28-2016, 11:51 PM   #12
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Originally Posted by dkottum View Post
It would be useful to weigh an Airstream at the jack and again at coupler, there is a difference (heavier at the jack). If you want to know how much weight you are placing on the truck's receiver ball, you would have to weigh it there.

.
Not at my trailer to measure ball to jack distance, but if it was 12", the weight difference would be 62 lbs for weight at jack of 1000 lbs. So 938 lbs at ball. That's for my 25' AS
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Old 03-29-2016, 06:20 AM   #13
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Quote:
Originally Posted by clamb View Post
Looking for a quick answer here. Water storage tank only. 2002 25' Classic. I'm not near my trailer to look, but I thought the tank is centered over the axles. Thanks!
Quick answer......yes, but not by much.

Bob
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