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03-27-2016, 03:24 PM
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#1
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2 Rivet Member 
2002 25' Classic
Portland
, Oregon
Join Date: Jul 2012
Posts: 82
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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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03-27-2016, 03:45 PM
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#2
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Rivet Master 
2008 25' Classic
Full Time
, Texas
Join Date: Nov 2012
Posts: 4,309
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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.
Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
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03-27-2016, 05:09 PM
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#3
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2 Rivet Member
2002 25' Classic
Portland
, Oregon
Join Date: Jul 2012
Posts: 82
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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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03-27-2016, 06:04 PM
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#4
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Rivet Master
2008 25' Classic
Full Time
, Texas
Join Date: Nov 2012
Posts: 4,309
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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.
Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
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03-27-2016, 06:34 PM
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#5
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Rivet Master
2012 25' Flying Cloud
Battle Lake
, Minnesota
Join Date: Jun 2009
Posts: 7,714
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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.
__________________
Doug and Cheryl
2012 FC RB, Michelin 16, ProPride 1400
2016 Ram 1500 Laramie Crew Cab 4X4 Ecodiesel 3.92 axles
The Truth is More Important Than the Facts
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03-27-2016, 06:38 PM
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#6
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4 Rivet Member 
2016 25' Flying Cloud
Holly Springs
, Mississippi
Join Date: Sep 2015
Posts: 426
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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.
__________________
Bob
2016 FC 25' FB twin
2013 F-150 Lariat CrewCab 3.5 EB 4X4 3.55 axle
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03-28-2016, 09:04 AM
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#7
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Rivet Master
Currently Looking...
Sioux Falls
, South Dakota
Join Date: Mar 2011
Posts: 1,183
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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.
__________________
David Lininger, kb0zke
AIR 54240
Heartland mpg 181 (sold)
1993 Foretravel U300 (sold)
2022 Grand Design Reflection 315RLTS
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03-28-2016, 11:25 AM
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#8
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Rivet Master
2013 30' Classic
Greenwood
, Mississippi
Join Date: Oct 2012
Posts: 12,111
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I would think a full water tank does not increase tongue weight because the tank is centered over the axles.
__________________
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
TAC #MS-10
WBCCI #1811, Region 6, Unit 56
Airforums #70955
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03-28-2016, 01:44 PM
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#9
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Rivet Master
2015 25' Flying Cloud
2016 30' Flying Cloud
Blenheim Ontario
, Ontario
Join Date: May 2015
Posts: 1,263
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Quote:
Originally Posted by m.hony
I would think a full water tank does not increase tongue weight because the tank is centered over the axles.
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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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03-28-2016, 02:54 PM
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#10
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Rivet Master
2013 30' Classic
Greenwood
, Mississippi
Join Date: Oct 2012
Posts: 12,111
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I know the trailer rides smoother with a full fresh water tank.
Sent from my iPad using Airstream Forums
__________________
2013 Classic 30 Limited
2007 Silver Toyota Tundra Crew Max Limited 5.7 iForce
2006 Vivid Black Harley-Davidson Road King Classic
1999 Black Nissan Pathfinder LE
TAC #MS-10
WBCCI #1811, Region 6, Unit 56
Airforums #70955
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03-28-2016, 03:30 PM
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#11
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4 Rivet Member
1966 24' Tradewind
2005 22' Safari
Bastrop
, Texas
Join Date: Aug 2012
Posts: 329
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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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03-28-2016, 10:51 PM
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#12
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2 Rivet Member
2002 25' Classic
Portland
, Oregon
Join Date: Jul 2012
Posts: 82
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Quote:
Originally Posted by dkottum
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.
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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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03-29-2016, 05:20 AM
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#13
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by clamb
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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Quick answer......yes, but not by much.
Bob
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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