by dbhosttexas » Tue Jun 22, 2021 6:15 pm
Well, my thought process on the design, and mind you it might be massively stupid, but here goes.
R value, isn't immense, but should be about R8 for 1.5", maybe a little less, but certainly way more than the truck bed metal plus the bedrug, and various weatherstripping.
So yes, I was planning on affixing 1.5" XPS foam to the 1.5" L channel using n interlocking rabbet type joint at the corners. I hope...
Once the XPS is bonded to the frame, with I am assuming Liquid Nails or something similar, I will get started with the most likely PMF. I think I can be happy with PMF as long as I figure out how to smooth it so I can get at least a passable finish with it.
Interior ceiling, and walls will have cedar veneer laminated, and oiled. And yes I am aiming for aromatic cedar for its insect repellent qualities.
I need to rig up a bed system that will be an effectively short king. 75" x 76", with the 76" going transverse across the truck, so the cap has to clear that inside, thus the wide cap. I want it to scissor into basically 2 troop carrier type couches when set up in day mode, and have the cap extend al the way to the end of the open tailgate allowing me that additional 22" + 7" floor space to allow me a place to actually put feet down on a floor before getting out of the bed...
So yes, I am having issues coming up with a suitable design that I can actually implement. Mostly due to my spotty skills at best...
I am trying to avoid wood framing due to concerns for strength and rot. And while steel would be considerably easier to work with, it would also make the entire camper considerably heavier. I am trying to work within the limits of a half ton truck...