And the big job:
Additional Fresh Water Tank
36 Gallons of fresh water will not cut it. I know, you can take extra water in the truck and refill but that's far too inelegant for the Ultimate Boondocking Toy Hauler
My goal was to get as close to 100 gallons as possible.
Best place (really, the only option) was directly between the axles. There was 22" x 68" of space between the supports and frame rails. Plus, centrally locating it should calm the fears of the "extra weight on the frame" group that are bound to chime in.
A ton of searching turned up this option from Icon Direct; https://www.icondirect.com/jayco-fre...wt3832-51-gal/
The dimensions were perfect at 21"x60"x10" yielding 51 gallons. This, with the OEM tank got me up to 87 gallons.
Best of all, it was in stock and shipped immediately.
Now the fun part; fabbing up the mount.
1" angle for the tank "cradle" and 1" sq tubing for the support bars.
Getting it in place and doing the final welding was tough but finally came along. Doing it at the same time as the axle flip helped immensely. It's bolted to the frame with eight 3/8" Grade 8 bolts.
I decided to add straps around the tank itself to keep things from bouncing when empty.
I didn't want to deal with changing the main inlet line into the smaller tank. Plus, the new tank is taller so it sits lower at the bottom and higher on top. This took some creative plumbing to get both tanks to fill to capacity. The two tanks are plumbed together with 3/4 hose running from the bottom of each. This line tees off to supply the pump since it's the lowest point (And includes a second drain).
The vent line from the small tank runs to the top of the large one with the new vent line coming off the large tank. (Does your head hurt yet?)
Anyway, here are some poorly done pics:
Both tanks filled to capacity