Sundance 241BH - Black water tank fell out
Hey Folks, Got a new 2018 Sundance 241BH. We picked it up a few weeks ago and just finished up our first trip. We drove from the Toronto area down to Cape Canaveral Fl. In total 5050km including so...
Forum Discussion
IF the tank is overfilled and the vent pipe is completely filled all the way to the roof, it will only exert about 3 psi, not 45 psi. (Water weighs 0.036127 lbs/cu. in., and there is less than 148 cu. in. of volume in a 7' x 1.5" pipe; that equals just 5.36 lbs, or 3 psi) But since there was no water coming off the roof, that means that the vent pipe was NOT filled with water. The OP also says that the tank never filled completely.
In any case, the tank fell out, which should never have happened. If the tank "expanded" because of pressure, then there was an obstruction in the vent pipe. If the tank dropped out simply because of the weight of a nearly full tank (which changed the shape), then there is a major problem with the tank supports.
Since every RV I've owned over the past 30 years has had the tank(s) supported with much more than just L brackets along the sides, my gut says that the manufacturer left out some additional supports that should've spanned the bottom of the tank. Filling a long/wide, but short tank without supporting the bottom will obviously result in the bottom of the tank sagging, and that sagging pulled the sides in enough to slip past the L-brackets supporting the edges of the tank.
At least that's how I'm seeing it, YMMV.
In any case, the tank fell out, which should never have happened. If the tank "expanded" because of pressure, then there was an obstruction in the vent pipe. If the tank dropped out simply because of the weight of a nearly full tank (which changed the shape), then there is a major problem with the tank supports.
Since every RV I've owned over the past 30 years has had the tank(s) supported with much more than just L brackets along the sides, my gut says that the manufacturer left out some additional supports that should've spanned the bottom of the tank. Filling a long/wide, but short tank without supporting the bottom will obviously result in the bottom of the tank sagging, and that sagging pulled the sides in enough to slip past the L-brackets supporting the edges of the tank.
At least that's how I'm seeing it, YMMV.
