With winter nearly upon us, seasonal changes had to be made.
I removed the original mattress & the foam topper I had added, and installed 1"-thick, rigid foam insulation from Home Depot. This gives an insulation R-value of 5. I then added my Exped Magamat Duo LW on top for another R9 worth of insulation.
Then I added a new Teton Sports Fahrenheit -18C double-sized sleeping bag. This bag is very comfy, warm, and surprisingly cheap (around $170 CAD).
And then the 100% down comforter which we normally use went on top:
We camped with this setup last weekend and saw night lows of around -10C. We slept with the tent's door opening completely open (rolled up), two of the other windows completely open, and were still too warm and had to partially unzip the sleeping bag on both sides. Good stuff.
I also found a way to lower the firewood basket:
This give me a LOT more room, so that's a success.
I also picked up a Chinese diesel heater off eBay. $230 CAD shipped to my door in less than a week from the US. And I then started making holes in my tongue box:
The unit is reasonably well made and assembled, but the one concern I found was that underneath the metal cover, the gas tank was not in any way secured to the rest of the unit. I wrapped a few cam-buckle straps around the tank and the rest of the unit in order to minimize movements of the tank.
The base of the unit is held down with a single M8 bolt (could only access enough empty room for this single bolt), and then a ratchet strap overtop. It's very solid:
I installed an aluminium blast gate for the output port:
The blast gate allows me to close the hole while in transport:
The exhaust and fresh air intake are both at the bottom of the heater, so down they went:
The exhaust desperately needs a muffler (it's on the way) because that's the single loudest source of noise.
The air intake then went back up into the tongue box:
Quick test while connected to my tiny 20ah lawnmower battery:
I tested the heater out a fair number of times and it works well, although the above-mentioned battery dies after only 50 minutes of use (from a full charge). The heater should only draw around an amp of current once it's warmed up and operating, meaning that ~10ah of useable battery charge should have lasted a LOT longer. I suspect my battery is old and worn out.
I'll be taking ownership of a friend's two group 35 batteries (also used) this weekend, and will use them for powering the trailer's toys. Don't yet know where I'll fit/mount them, but I'll figure something out.