Jon Terry wrote: Is it possible to create a bell underneath that mattress without changing the general size and shape of the mass??
I like your suggestion to close the gaps under the red brick, I have loads of perlite, I can fill in those gaps with just dry perlite.
Lastly, to clarify, I'm not making bricks with the local clay and sand, just mortar. All of my main worries at this point are with the laying of the brick, something I've never done before.
Jon Terry wrote:
I also wanted something safe that I could put a mattress on and not burst into flames...Sketchup Pics for Permies
Jon Terry wrote: Now, about that bell chamber, I like that, too, but, I'm concerned with the exhaust flue being moved, that's something I can't do. I have my vent hole cut in the steel wall already and insulated and sheathed, it's carved in stone now, so to speak.
You keep saying I'll have trouble with drag, I designed this keeping to the guidance of the book and extended my burn tunnel about a foot, I think, in order to power it through. According to the book, it should be fine...?
Jon Terry wrote: I'm a little concerned with the loss of mass that would normally fill the area between the pipes. It seems I'd lose quite a bit of mass that way. Should I be?
Jon Terry wrote:A couple quick questions: it's an 8" system, so the hole on the side of the bell leading out would stand 8" high, what if I put an L bend there pointing down, trimmed a few inches off the floor of the chamber so as to draw cooler air? would that work?
what's the best way to post updated pics, directly in the thread or just added to the Google photos folder? If best to post directly, how? I tried using the link given from Google photos, but they didn't show up in my browser, at least?
Jon Terry wrote:Here's a before and after of what I meant about altering the opening into the exit flue: put an elbow turning down on the end of it, and trim the opening as needed to make sure there's ample space...?
Also, you mentioned putting pillars in the bell and facing bricks inward to add to the mass in there, what about covering most of the floor with river rocks about 3-5" in diameter?? Maybe leave a channel in them to open a path to help guide the cooler gasses into the exit flue?