1950 Liner "Weeble" - Mounting and plumbing the tanks
The post below is from September of 2017.
The tanks are mounted using 3/16 thick by 1.5" wide metal straps. We mounted the straps to angle steel mounted to the stringers. The straps are mounted with bolts and nuts welded on so you could get them out from underneath if needed.
The black tank mount mocked up:
The black tank mount bolted to the frame:
Next we cut out holes in the stringers for the plumbing. The 3" outlets really took a lot of metal from the stringers so we made brackets that mount under the belly pan and bolt across the span for extra strength (not shown).
Both tank mounts in place:
The tank mounts hold the tanks snug at the base so they won't move around but they are not "attached" physically to the mounts. They are also right next to the floor so they don't move up and down. I am hoping there is enough flex in the mounting so it doesn't bind the tanks. The plumbing went in next. Made the 3" drain valves and exit as a straight shot from both tanks to a "T" that drops down at a 45 degree to the exit. Technically the tanks could mix if both valves pulled at the same time but my practice is always drain the black tank, then after it has fully drained, stop the black drain and pull the gray.
Overhead view of the drains:
Side view of the drains:
Where the plumbing runs through the stringers, we put self-adhering rubber edging from the auto store just in case there is contact. Also in the photo below, you can see the welded nuts for the reinforcing strips that will go under the stringer where the cutout is.
Close-up view of plumbing through stringer:
The tank vent lines are 1.5" and exit the tanks on the sides at the top. They both come out of the tank and 90 degree up before coming together for one vent exit through the roof. This will be in a closet space.
Tank vent lines:
The water line comes in next to the tank pulls. The plan is to make a cut-in box in the belly pan that houses the tank pulls and drain. The water line will be slightly under the belly pan.
Water inlet:
We put water in both tanks and pulled the drains. It works great when the camper is level. If off either front of back, the tanks can hold a little at the bottom most point. The black tank holds 16 gallons total and the gray tank holds almost 28 gallons which will work with navy showers. I am pleased with how they came out.
The tanks are mounted using 3/16 thick by 1.5" wide metal straps. We mounted the straps to angle steel mounted to the stringers. The straps are mounted with bolts and nuts welded on so you could get them out from underneath if needed.
The black tank mount mocked up:
The black tank mount bolted to the frame:
Next we cut out holes in the stringers for the plumbing. The 3" outlets really took a lot of metal from the stringers so we made brackets that mount under the belly pan and bolt across the span for extra strength (not shown).
Both tank mounts in place:
The tank mounts hold the tanks snug at the base so they won't move around but they are not "attached" physically to the mounts. They are also right next to the floor so they don't move up and down. I am hoping there is enough flex in the mounting so it doesn't bind the tanks. The plumbing went in next. Made the 3" drain valves and exit as a straight shot from both tanks to a "T" that drops down at a 45 degree to the exit. Technically the tanks could mix if both valves pulled at the same time but my practice is always drain the black tank, then after it has fully drained, stop the black drain and pull the gray.
Overhead view of the drains:
Side view of the drains:
Where the plumbing runs through the stringers, we put self-adhering rubber edging from the auto store just in case there is contact. Also in the photo below, you can see the welded nuts for the reinforcing strips that will go under the stringer where the cutout is.
Close-up view of plumbing through stringer:
The tank vent lines are 1.5" and exit the tanks on the sides at the top. They both come out of the tank and 90 degree up before coming together for one vent exit through the roof. This will be in a closet space.
Tank vent lines:
The water line comes in next to the tank pulls. The plan is to make a cut-in box in the belly pan that houses the tank pulls and drain. The water line will be slightly under the belly pan.
Water inlet:
We put water in both tanks and pulled the drains. It works great when the camper is level. If off either front of back, the tanks can hold a little at the bottom most point. The black tank holds 16 gallons total and the gray tank holds almost 28 gallons which will work with navy showers. I am pleased with how they came out.
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