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silversand's avatar
silversand
Explorer
Sep 23, 2014

Attn Pop-up TC overlanders: gray water reinforced saddlebag?

Have any of you pop-up TC overlanders ever used a reinforced polyester (or, Hypalon genre) gray water saddlebag between camper tub and truck bed?

We have a large 10 gallon portable RV gray water tank, however it needs to be installed outside under the truck, and hose run to it. This isn't convenient when we are dead-heading it cross-country at gas fill-up stations and rest areas. So, I came up with a theoretical concept:

-buy a 4+ ply reinforced polyester or rubber fold-up sun-shower bag, with strong 4 corner stanchions;

-mount the "sun-shower" to the fore section of our Outfitter camper's tub (where we have lots of thickness for the bag to "inflate" with gray water), with high-density closed cell poly-foam block Ducktaped under it, just fore of our wheel-well, as a pedestal;

-attach RV hose to gray water outlet of camper (located directly above where bag will be located), attach other end of short hose to sun-shower bag;

-attach 8 feet of clear vinyl tube to sun-shower outlet (secured by tie-wrap), and run to the rear of camper/truck bed, and attach a barbed plastic drain-cock thereto (when we are at a real dump site, we can unfurl the vinyl tube, and empty the ~6 gallons of gray water).

The above sounds complicated, but I would estimate a 20 minute install total time. This is a possible contender 4-ply gray water bag: here-->

The above would allow us a fast stop at a rest area, where we could use our water pump/sink to wash up, cook, etc, without having to deploy the big 10 gallon (long install) polytank we have in the middle of a public parking lot.

Anyone done this ? Can anyone envision any theoretical down-side to this plan ?
  • Interesting bill.

    We have something like the barker (blue boy) but wheel-less in the 10 gal.

    I think i know the fuel bladders you mention. They are a bit pricy for our app. But are fuel grade.
  • Silver
    A couple of thoughts.we used blue boy on a hitch rack underneath our last camper to increase tank capacity.when the onboard tank was full I opened the valve and dumped into the blue boy using a short piece of dump hose.then I closed the valve and started again.when we got to a dump site I would empty the blue boy and the on board tank.this effectively doubled our tank capacity.I put a ball valve with hose fitting on the bottom of the blue boy so I could empty that right from the hitch rack without having to lift the blue boy.this system worked very well and we already had the hitch rack and blue boy.
    If you really want a soft bladder we use fuel cells to carry extra diesel when fishing the offshore canyons.not cheap but they are rugged.
    Bill
  • Hi Cal!

    The worst-case scenario I dreamed up would be saddlebag abrasion. This is why I sourced woven polyester multi-ply, or Hypalon (used by high quality white-water raft manufacturers).

    I would secure the vinyl tube so that t would take more than 60+ LBS force to pull it out of the bag outlet L fitting.

    ....on edit: the vinyl drain tube would route around the wheel-well, then between camper tub base and truck bed, and out the back near the tail light...hmmmm? What if the camper shifts, pinching the drain tube between wheel-well and camper tub? Hmmmm.
  • silversand wrote:
    theoretical down-side to this plan ?

    Are you sure you want theoretical down-side (eg, worst cast scenario)?

    Actually, it sounds like it would work, if you do it right.