Ladies and Gents,
I've done some searches and found a few threads on people selecting different mattress's but, not too much on our issues. We have an '04 Itasca Horizon D/P and it came with a Sleep number set of mattress's. that is, a "set" because there's two chambers for the single bed. A "his" and "hers". Well, ever since we've tried sleeping on it, for just about a year now, on various trips, we can't seem to get something right.
It seems that no matter what the settings are, mine on higher, hers lower, hers higher, mine lower, both equal-high or low, etc. etc. etc. we both seem to "lean" towards the middle of the bed. I've pulled that bed apart twice now and find no odd issues with any particular section. As those that know, there's an outer 4" thick perimeter wall of foam, then the two air chambers, and finally three "Sawtooth" sections of foam, in between the two air chambers. Is that the same way all or yours are laid out? By the way, there's a layer of sawtooth foam, about an inch thick, that covers only the air chambers, not the perimeter 4" walls.
Now, in all honesty, the sawtooth pieces of foam that are in the center(between the two air chambers) are a tad lower than the two air chambers. But, in all reality, it's the air chambers that are the issues. When I lay on my side, and adjust it to say, 50, and the pump stops, I still feel I've got a slight tilt towards the center of the bed.
Now, during any movement in bed during the night, I'll eventually end up crowding her out. And, her side does the same thing. So, we, during the night or even right after we hit the sack, are already bouncing off each other because this bed seems to make us do that.
I've checked the platform under the bed and it's around 3/4" thick and seems it's not "swaying" in the center at all. I was thinking that if the plywood base had a sway in it, then it would be accentuated in the two mattress chambers above but, that does not seem to be the case here.
We just got back from a 3 day trip to our local desert and nothing has changed. Well, upon return, we started messing around with that set of mattress's. I moved hers to my side and mine to hers. Then, climbed on and filled to 50, SAME THING! Hmmmmmmmmmm
I'm actually thinking of building a 1/4" ply wood gable system (it would sort look like a very shallow roof pitch with a peak) under the two chambers. I'd only raise the center section about 3/4" total. I can't for the life of me figure out why this supposed "expensive" and well thought of bed is doing this.
We've never had any issues like this before in any of our other coaches and they had cheap-o rv mattress's in them from the git-go. We've also never had an issue like this in our home mattress's either. I'm stumped on this one, anyone had any issues like this too?
Scott and Karla SDFD RETIRED
2004 Itasca Horizon, 36GD Slate Blue 330 CAT
2011 White Honda CRV EX-L,4WD w/NAV Toad 2008 Caliente Red LVL II GL 1800 Goldwing KI60ND
Fire Up, we tossed our king Sleep Number for a real mattress as I got tired of all the problems. But, that's not what you are asking about so ..... You said that you switched sides, did you turn them upside down? (if that's possible).... just to see if they would lean towards the outside edge of the bed?
2008 Monaco Dynasty, 42.2 ft., 4 slides, 425 hp clean-air Cummins diesel
2013 Honda CR-V EXL, AWD, w/Nav, SMI Air Force One vacuum-assisted braking
We bought a Sleep Number bed for the house a few years back. It had a solid section of foam maybe about 3 to 4 inches wide between the chambers. With it in place it was nearly impossible to roll to the other side. Yet we both seemed to end up against the center foam, I guess you would say we rolled inward. At that time I called the company and they said to try removing the center foam. We did, but no improvement we both ended up against each other in the middle. We sent is back before the trial period was up. Friends had one and complained of the same thing.
We have had no such issue with either of ours, but then they are 10+ years old and might be a different design then yours.
2008 F350SD V10 with an 2012 Arctic Fox 29-5E When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.
Thanks for taking the time to read this and comment. We went out and "flipped" the two chambers and, zero effect difference. So, I flipped them back to normal and we then proceeded to do an experiment. We folded a blanket in such a manor that it was thicker in the middle and tapered out towards the edges. It was way too long for tucking into the ends of the beds but, we tried it anyway. Yep, it worked.
This is a physics and geometry issue. And, I barely know how to spell those much less work with them. But, by creating a so called "High spot" in the center and tapering towards each side of the bed, it basically counter acted the inward roll effect that the two air chambers were creating. We placed the air chambers on top of that folded blanket and haphazardly placed all the rest of the 4" foam around the edges and climbed on the bed and set both sides to 50.
I had no effect of rolling towards the center at all. And, none trying to roll me to the outsides of the bed either. She said she had a tad bit of attempt to roll to the outside so, I let her side down to 45. It basically stopped that feeling.
So, at this time, a very crude attempt at reversing the issues at hand and, a somewhat positive answer. So, now to create a more permanent remedy. I'm thinking instead of the plywood roof theory, I'll head on down to the local foam and industrial material supply house and get a 1" x 12" x 80" section of foam for the center, and two 1/2" x 4" x 80" for the section 1/2 way from the 1" section and the outboard sides of the air chambers.
In the mean time, I will take one of your suggestions and call Select Comfort and see what they have to say. Thanks again for your help here.