Originally Posted by AG NoBo19.7
Hello. I searched google all the threads in this forum but I still need help determining the original shape of my fresh water tank.
I was inspecting under the trailer and noticed the fresh water tank is rounded on the bottom (I temporarily removed the corrugated under belly). I can't tell if it is bulging due to no support, or if it is designed that way. The shape is uniform and symmetrical so it is very hard to tell.
Is the OEM tank supposed to be flat or rounded on the bottom?
Been using the trailer for a year but just now notice this.
2020 NoBo 19.7
I think and hope it is made that way to some degree. How much, I'm not sure. Mine curves down quite a bit as well, I would guess 3" to 4". If it were originally flat, I think the corrugated under belly would show some stress at the fasteners used to hold it on. These poly tanks definitely do have a tendency to sag and Forest River definitely has a tendency to "under-build" things, so there is no harm in adding some additional support.