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Old 08-18-2017, 04:28 PM   #1
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Weight limits

Trying to wrap my head around GVRW unit base weight and net carrying capacity
GVRW is 10,000 pounds max
Unit base weight is 7,365 pounds with full lp and batteries?)
Net carry capacity is 2,635.
I am assuming that the net carry capacity is based upon fresh water, grey water and black water tanks being full plus our stuff
Am I on the right path or am I missing something
Thanks for all your help
Stuart
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Old 08-18-2017, 05:25 PM   #2
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Quote:
Originally Posted by stujan View Post
Trying to wrap my head around GVRW unit base weight and net carrying capacity
GVRW is 10,000 pounds max
Unit base weight is 7,365 pounds with full lp and batteries?)
Net carry capacity is 2,635.
I am assuming that the net carry capacity is based upon fresh water, grey water and black water tanks being full plus our stuff
Am I on the right path or am I missing something
Thanks for all your help
Stuart
Doing this math right now on a couple potential purchases.

GVWR - the most your trailer can weigh with anything and everything you put in it including water, LP, food, waste in tanks, clothes, camp chairs, etc. and any options you added.

Unit Base Weight - the factory will tell you, and I have been told to go weigh it myself - this is the weight of the trailer before you load it up with your items, but it does include options and may or may not include fresh water, LP etc. - read the owners manual to see.

Carrying capacity is a function of these two numbers and the GCWR of your TV. So, lets say 10,000 is your GVWR and 7,365 is the unit base weight (again, it may not be), then the MOST the trailer can carry is 2,635. The reason I say the most is your TV has a total combined weight rating, which is the base weight of the TV plus the driver, passengers, and gear you load in the TV, plus the loaded weight of your trailer. You likely can't load your TV with people in every seat, and gear everywhere and load your trailer to the max and be under GCWR unless you have a very large TV and a smaller trailer.

I'm a pilot and weight and balanced are critical to us. There are no general aviation aircraft that you can fill the seats, the cargo bay, and the fuel tanks. RV's look quite similar to me.

I built myself a spreadsheet to add all these values and based on that I took two trailers off my list, even though they weighed LESS than what my TV can tow - it was the combined weight that hit me.

And, if you are going to tow at altitude, your TV owners manual may reduce your GCWR by 2% for each 1,000 of elevation.

Good luck in your search,
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Old 08-18-2017, 05:46 PM   #3
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Weight limits

I have a 2017 classic 30rb twin and I think my weight placard is wrong. [ATTACH] we do have the solar option. We stopped fully loaded for a weeks trip at cat scale and the weight was this. Full propane and full fresh water tank.
[ATTACH] The weight fully loaded is less than airstream says it weighs empty. Go figure....
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Old 08-18-2017, 05:52 PM   #4
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You should check this thread, and it has links to some spreadsheets that may help.

http://www.airforums.com/forums/f42/...ee-171608.html

Stay safe,
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Old 08-18-2017, 05:55 PM   #5
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Quote:
Originally Posted by ksteve06 View Post
I have a 2017 classic 30rb twin and I think my weight placard is wrong. [ATTACH] we do have the solar option. We stopped fully loaded for a weeks trip at cat scale and the weight was this. Full propane and full fresh water tank.
[ATTACH] The weight fully loaded is less than airstream says it weighs empty. Go figure....

Isn't this because your weight distributing hitch has taken some of your trailer's tongue weight and pushed it on to your tow vehicle?
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Old 08-18-2017, 05:57 PM   #6
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Originally Posted by ksteve06 View Post
I have a 2017 classic 30rb twin and I think my weight placard is wrong. [ATTACH] we do have the solar option. We stopped fully loaded for a weeks trip at cat scale and the weight was this. Full propane and full fresh water tank.
[ATTACH] The weight fully loaded is less than airstream says it weighs empty. Go figure....
Have you considered the tongue weight in your math? Probably another 1000# with the Classic that you'll need to add back to your axle weight. Axle plus tongue = gross weight.
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Old 08-18-2017, 06:16 PM   #7
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Forgot tongue weight, thanks.
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Old 08-18-2017, 06:49 PM   #8
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Hi

There's a lot of "stuff" that is likely to go into your 30' Classic.

All tanks full of water (8.3 lb / gal) to all tanks empty is around 800 lb. Empty is realistic. You may never see "all full"

A batch of kitchen stuff might be 200 lb for one person and twice that for somebody else.

Four people and two weeks of cloths could be over 200 lb.

Fill up the pantry with canned goods and you might hit 100 lb.

Yes, this could go on and on .... much of the stuff above are numbers I'd suggest you should never ever hit.

I'd suggest you scale your TV to haul a trailer at max weight and with a tongue weight of 10 to 15% of that weight. Then check things on a scale to make sure you don't go over. While I can't see how you could go over .... it's worth checking. If you are over, the trailer is over, you have to fix it ....

Bob
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Old 08-18-2017, 07:10 PM   #9
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Thanks Bob, we are good to go with TV as I still have 1860lbs of payload left so I'm good there and don't think we will put much more in Airstream.
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Old 08-18-2017, 07:14 PM   #10
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Check your GCWR, it could be lower than your combined GVWR's.
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Old 08-18-2017, 07:25 PM   #11
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I don't think I could hit that towing 2 airstream lol, GCWR is 28,700
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Old 08-19-2017, 06:11 PM   #12
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ksteve...I see you are from McDonough. I grew up in Griffin. Long time ago. Just thought I would say Hi.
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Old 08-19-2017, 08:02 PM   #13
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Yes live in mcdonough my wife and I are both air traffic controllers in Hampton. Hi.
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