by McDave » Thu May 18, 2017 5:10 am
Hey m.glisson003,
The side you can't see is welded to the frame member you see behind the tank. You can't see it because I had to cut it a little shorter to allow for the diagonal frame member at the end of the tank. The piece you can see is bolted with two bolts each end, offset, into the frame at the ends of the supports. The tank almost goes wall to wall, as it is a 6' wide trailer. That angle is like 1/8", so 14g I guess? Part of the reason it's mounted that way is the dimension of the mounting "lip" was exactly the same as the floor to frame rail dimension. Very handy. Also, you can remove one rail and access the tank if (Heaven forbid) the need arises.
No other support needed as the weight is dispersed and carried over a long distance x 2. It is very solid. I put stop blocks at the ends to limit any lateral movement. Also, I added some 1" weatherstrip used for sealing metal roofing on the top around the perimeter and down the center to prevent movement and chaffing. It's compressed down to 1/8 or less. I had it laying around so I figured why not?
I originally intended to use it as combo black/grey, and still do somewhat but I installed a diverter valve on the shower drain and can drain that to the ground when boondocking, saving capacity for the other stuff. My fresh tank is 25gal so that should prevent any unwanted "overages". I've never come close to filling it really. I don't spend a lot of time at camp, mostly just sleep and AM showers. My wife is showing more interest in going to the bike rally's with me, so we'll see how it holds up. I was at Sturgis for 9 days and nights last year and I would guess tank was 1/2 to 3/4 full. I always start with 2-3gal of clean water and the blue stuff. I have a flushing/rinsing gate valve that is very handy to rinse tank thoroughly and also rinses the drain hose very well. Gotta have one of those.
So that's just about all the poop on poop tanks I can give ya.
Good luck,
McDave