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Old 01-20-2014, 12:18 PM   #15
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Anything that is moved farther from the axle(s) will increase weight in the other direction. Also to helps lower sway tendency, it is best to concentrate weight nearest the axles. Note that the Airstreams are designed with the heavy appliances over the axles and liquid storage tanks concentrated near them.

Of course we do things for convenience that work against this, but it's good to consider weight and balance changes.
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Old 01-20-2014, 12:21 PM   #16
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I guess that is correct thinking- further back would be on the trailer axles- further forward would be on the tongue-
Maybe he has a lot of wiggle room as far as tongue weight-
Say, for instance, 3/4 or 1 ton tow vehicle, less tongue weight per model of trailer anyway, Class V hitch, and so on and so on and scooby dooby doo...
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Old 01-20-2014, 12:22 PM   #17
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Why would the tire be moved to this position rather than in the carrier underneath? It would increase tongue weight, something we try to avoid.
Many of the older trailers did not come with the opening for the spare underneath.
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Old 01-20-2014, 12:24 PM   #18
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I don't know that it would increase tongue weight- in its position under the trailer it is still forward of the axles- seems like it would not alter the tongue weight at all, but maybe it would be more easily accessible, but maybe my thought process is incorrect-
Any movement fore or aft of the original location will have an affect on trailer balance. I suspect the difference between a location just under the front belly versus on the tongue near the front skin would be minimal though and could be easily offset with some weight relocation within the the rig.

In reality we deal with fluctuating tongue weights all the time. Two 30 or 40 lb. LP tanks can make a 60 to 80 lb. swing when tanks are empty versus full.

For me the benefit of ease of access is a small trade off in this instance. This is a very clever design.
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Old 01-20-2014, 12:26 PM   #19
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Many of the older trailers did not come with the opening for the spare underneath.
Thanks Wazbro, that's what I was wondering. Couldn't understand moving it there from underneath.
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Old 01-20-2014, 12:32 PM   #20
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That trailer was basically gutted and turned into/is being turned into a bunk house.
I would think it would take transferring hundreds of pounds one way or the other to adversely affect the handling characteristics- not just 40-50 lbs.- but I really don't know-
The basic design of kitchen, bathroom, wardrobe, holding tanks over the axles seems like a good idea-
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Old 01-20-2014, 01:00 PM   #21
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Quick response to dkottum...

Most Airstreams do not have a spare carrier underneath anything or anywhere in front end.. Spare tires were not a part of the standard equipment until recently... Yes it adds weight to tongue, but so would any spare tire in front of axles... Pretty clever design, though with hitch gear in box underneath it would have to swing in and out each time you hitch or unhitch...
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Old 01-20-2014, 01:07 PM   #22
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I'm one to talk. I tried carrying bicycles everywhere and settled on the back bumper. I pulled out the dinette and put two steel-framed recliners in front, but that was pretty much an even trade. Put a 200# ProPride hitch over the coupler . . .
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Old 01-20-2014, 02:01 PM   #23
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dkottum: did the same with recliners up front - it added 50# to the tongue weight (640 to 690). Added a tire behind gas tanks (moved them forward about 1 1/2" and welded a bracket on frame - works great but not as slick as this swing out!) and it added another 20# to my tongue weight - to 710#. Actually improved the handling of the towing I think - with the weight transfer hitch I really don't notice any difference. Tows great.
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Old 01-20-2014, 03:18 PM   #24
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Thanks for the interest! I don't have any plans for the hitch, I pretty much used what I had laying around and made it fit. I don't have any issues with interference with the hitch. The only thing I think I would do different next time is to have two bars coming down over the frame. One allows a little wiggle when the tire is extended outward. Not much....but enough to point out my lack of fab skills!

I have towed the airstream from north Texas to South Padre with my 2011 Grand Cherokee with zero sway or porpoising. I am, however, very careful when I tow. I knew there would be added tongue weight, but there was no other provision for my spare unless I kept it in the camper (yuck!). I am also too cheap to purchase the underbody tire carrier and the thought of crawling around to get the spare didn't sound fun either.
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