This was a fun project. The experiment of this project was to prioritize the dream of hot showers above all else. Here are my reflections now that is has been completed for several months and I have had the chance to use it on many occasions.
Getting out of my Kelty Blockhouse tent after taking a hot shower at camp feels amazing!
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Having pressurized water at camp makes life better.
That is the end of the pros.
Leaks:
I have had zero leaks with my system (I spared no $ on fittings.) But a water setup like this inside the vehicle is asking for trouble. It's not if but when.
I will add this detail... the box has to be bolted to the floor, and if a leak would occur it would travel through those bolt holes... through the holes in the false floor directly to the carpet / carpet pad. I worry about this every time I use it, and feel the need to remove the box and the sub floor the second I hit the driveway after a trip to inspect it.
Space:
The give up on space with this setup is obvious. It is manageable for two people but with kids it's a no go.
Weight:
Stock suspension, Sliders, and 33 inch tires, and I'm fat, but not over GVWR. Water tank empty but otherwise loaded for week long trip... I hit the scales.
steer Axle 3380, Drive Axle 3800, Gross Weight 7180. Drove 1000 miles and felt great. Put 15 gallons of water in the tank in CO and different story. 125lbs of water changed a lot. I'm not smart enough to know if it was the altitude, the dynamics of the water, or the just the weight. Off road near home it seems fine. At 7k feet the truck just didn't like it. Heavier springs or upgraded suspension would help. Something I'm thinking about.
Practicality:
Like an rv you want to fill up when you get there not when you leave home. It's just a bit of an unknown sometimes if you can get water into a 15 gallon hard mounted tank. Never have to worry about that with a Jerry can.
Conclusion: I'm glad I did the project and water is still a big priority for me. The box is nice to have in the garage for camping trips at sea level. However, I am working on a less intrusive solution.