This thread is a bit old but I just found it and want to clarify a few things.
Here at
Timeless Travel Trailers we pay a great deal of attention to weights and balances of our products. Behind and under finishes we use light weight materials including treated paper honeycomb (similar to that used in the classic Airstream motorhomes), aluminum honeycomb (as used in the aviation industry), structural foam panels and other weight-saving products. We also use a variety of proprietory techniques to reduce the weight of our builds while using natural hardwood solids and veneers, solid surfacing, and even natural stone materials.
When our designs exceed the original build weight of an Airstream trailer, our licensed, Professional Engineer steps in and designs modifications to the original chassis to safely hold the new weight. If the original chassis is compromised by corrosion or previous repairs, our engineer designs, and our in-house team of certified welders builds, an entirely new chassis for the trailer. All of the older trailers leaving our plant are riding on new Dexter TorqFlex axles specified for the gross weight rating of the trailer.
Most of our commercial vehicles will rapidly exceed the original design weight. This issue is one of the most often ignored problems of converting an Airstream to a mobile food or coffee vending unit.
Several people have converted a travel trailer to foodservice use without proper chassis modifications with less than acceptable, or even dangerous, results. One of these Airstreams was mounted on a flatbed cargo trailer to save it after the overloaded chassis broke while in-tow. Another Airstream kitchen trailer is delivered to the locations where it is being use on a cargo trailer because improper design and engineering makes it too unstable to tow on its own wheels.
On NEW Airstream products our designers and engineer work closely with the factory engineering and production departments to build trailers which meet or exceed original specifications.