A video of a British factory

[Bob Hammond]

Maybe you've seen this before, but there might be some useful construction techniques:

https://www.youtube.com/watch?v=DbFV-b0drXA

[KennethW]

I like the light weight frame on that standy. Here is a youtube of a way to hardside-foldout that might work in some way on a camper.
https://www.youtube.com/watch?v=bdDNFLx7hIw

[CarlLaFong]

Did anyone catch the shots of the chassis. Very simple, very light gauge material, yet it has to pass some very stringent European standards.

[Bob Hammond]

Another thing of note, is that they built the trailer on the platformed chassis, from the 'inside out'. That means no squinching a human body into tight corners to fit cabinets, and it's far easier to make electrical and plumbing connections without forgetting anything or have problems with passing the lines in a safe and secure manner. It's far easier to fit everything before putting up the sides and roof. But of course, this means that accurate plans, templates, and cutting techniques are essential. All done by CAD and on CNC machines, I think. And careful, competent assembly is necessary too.

BTW, I didn't have the sound on, when I first viewed the video. The factory is in Germany.
A trailer like the one in the video goes for about 11.5k British pounds - ~ about $18k! Here's the sales website:

http://springbankleisure.com/index.html

[Bob Hammond]

The 'swing-out hitch', and the spoiler/wind deflector -- and then towing at 230 kph (140 mph!). Even if it was straight-line towing with no crosswinds or truck bow-waves, that's impressive.

[Bogo]

From another British factory...

https://www.youtube.com/watch?v=yo3_BfN ... YL&index=5

At minute 3:22 and at 10:40 into this video they show the frame of an Elddis. Glued and bolted to the main floor, but notice the near lack of cross members on the frame.

Also notice the joint style used for connecting the walls to the floor and ceiling. That is shown starting at minute 2:38. Keyed joints are an old cabinetry joint technique. With walls, floor, and ceiling bonded together where they meet, the box becomes very rigid.


This one has much more of the frame build shown:
https://www.youtube.com/watch?v=6uZU7bHp1kw

And more in this one:
https://www.youtube.com/watch?v=Koh5EyS6NNs

Some automated kerfing shown in this one:
https://www.youtube.com/watch?v=4G7zBTYOA8s

[Bob Hammond]

The adhesives and keyed joints look like a very good methiod. I've also considered that stitch-and-glue techniques, such as small boatbuilders use, might be a good strategy. I've thought about embedding metal plates with threaded sockets, as hardpoints to attach a cabin to a chassis:

Which comes first, a boat or a trailer?

http://www.bateau.com/