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Hey Q, thanks for real life answers, if it’s not to much trouble could you describe you floor plan? Like kitchen on the passenger side batteries on drivers side shelves vs drawers. Fold out desk or permanent, things like that. Also what heat source are you using? I’m looking at a Dickinson propane fireplace. Your in Oregon, I’m just a bit north in Washington.
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Hi again, I've been off-grid for many days, camping in BLM and NF lands around Sisters and Redmond Oregon. I bought the smallish Buddy heater, but not used it. It's home in Reno. Just using a good sleeping bag. My lashup is essentially a "metal tent", one step above tent on the ground. Basic minimalism fills all the needs. There is no kitchen, I cook outside or put the Coleman stove on the floor near the side doors and stand outside, if it's too windy for outside cooking. I really don't want too many food odors in the van.
Re floor plan - there are only 3 pieces of "furniture" in the van, and all temporarily attached. A couple of boards (not even attached) support the mattress, which is crosswise at the very back, behind the nasty vertical strut over the wheel hump on the GMC van. To the left side is a (beautiful) folding computer desk with pullup shelf. To the right side in front of the mattress is a small end table, which has (2) 35-AH batteries, the solar charger, and a few 12V interfaces bought on ebay. 100W solar panel I put outside on sunny days. That's the entire not-really-a-conversion. But it has everything I need. 8 cardboard storage boxes "exactly" fit under the mattress.
I bought a solar shower, and it warms water quite nicely, but it's worthless as a shower to due low-flow. I bought a garden sprayer to dump the warm/hot water into from the solar bag, but have only used it at home in the tub, and it worked well with plenty of pressure. Water is just bottled. So it's much like tent camping, but no soggy tents. Links of all gear in next post.