I am embarking on a build of a 5x8 Interstate enclosed trailer. I recently sold a very sweet vintage Trilluim 4500 fiberglass "egg" camper. I sold it because it just wasn't doing the job for me, but I did love it as a camper.
I will be using this trailer primarily when I go to 4x4 off-road events here in the northeastern US. My goal is to have a trailer that in cargo mode will be able to transport my 5 heavy, large off-road tires. They are 35" tall and 11" wide and weigh about 85lbs each. I also bring along a good number of tools and spare parts in addition to camping stuff and a Cookshack electric smoker. The Trillium couldn't handle that bulk and weight.
In camper mode I am looking for a "hard shell tent" sorta thing - with upgrades. A fold down sleeping platform (this will be just for me 90% of the time). I'll add shore power for lights, a small electric heater and power for small electronics recharging and maybe some music. Maybe a car battery/charging arrangement.
I plan to add a roof vent, 2 windows and a door (the trailer has just a large rear single door at the moment.)
The cargo mode cannot be compromised by the camper mode.
I'm going to post some of my preliminary diagrams. Any and all comments and suggestions are welcome.
Thanks,
Mark
Here is the raw material:

