Armin Speiser

Thank you for your thoughts, dear Jane!
Just to say: "I have no knowledge to share with you, but my heart is with you" is wonderful and gives strength and joy. It is this way of thinking and empathizing that makes this community so special.
A magical Christmas to you too.
Armin

Thank you both for the prompt reply and, dear Peter, for the detailed explanation! I will now try to understand it and probably come back with more questions.
For today, I wish you a joyful Christmas Day.
Armin

Hello everybody. I'm back again.
A little Christmas miracle.
We finally have the bricks for the stove and also someone to weld the substructure for the BatchBox/Riser.
So almost everything is ready.
While going through the plans and posts I realized that I'm missing the dimensions for the P-Channel.
I'm not sure if I understood the formula correctly.

P-channel dimensions
Width W = B/2 18cm/2=9cm
Height (thickness) = ((3.14(D/2)^2)*.05/W  
                                 ((3.14(18cm/2)^2)*.05/9cm=1,4cm
Is this correct?

Where should I place the P-channel in this case?
At the bottom of the batch box or at the top?

What is the difference, except that the top version is easier to build?

If nothing else comes up, I plan to start building the first or second week of January.

I wish you all a very Merry Christmas full of love, joy and warmth!
Wherever you are!
Armin and Sabine

Hello everyone.
If it is true that everything has its right moment, then it seems like this is not the right time for this project.
The last two weeks have been a roller coaster.
Joy and disillusionment are often close together.
Long story short, we had so many unforeseen expenses that even the small budget for the oven is gone and we can't buy the bricks for the bell at the moment.

If there's one thing I've learned in these first fifty years of my life, it's: "If there's a lack of flow in a project, you shouldn't try to force it, if possible."
So I have to put the project on hold for now and get the long underwear out of the closet.
Thank you for your support so far.
I'll be back as soon as the flow (and the money ) is back.

Wish you a nice autumn.
Wherever you are.
Armin

I'm really happy! The first step is taken!

Today we started the fun part of the project. After all the thinking and planning over the last few weeks, finally some real work! Dusty, dirty and at the end of the day I can see a result! I love it!

Thank you all for your patient support.
Best regards
Armin

Sorry, I was probably a little too careless with the last drawing. This relates to your suggestion of placing the riser/batch box on beams. Since the beams are nearly 1,10 m long , I thought about supporting them with welded legs. But one in the middle of each beam would probably be enough. I hope the new drawing can clarify my thought.
Or do the legs interfere with air circulation?

Hello!

Thank you Peter for your offer to accompany the construction. I had already planned to document the work.
I hope to start demolishing the canal tomorrow and then I want to cut out the wooden floor.
I haven't bought the bricks for the bell yet because I'm hoping to get feedback from various friends by next week if they know anyone who has old bricks that are no longer needed.

In the meantime I have found out where I can get the Superwool.
There are different variants:
Superwool plus (Classification temperature: 1200°C. Maximum continuous application temperature: 1000°C. Tensile strength: 128 kg/m3 75 kPa) 2690 kr = 225€ = 240 USD

Superwool XTRA (Classification temperature: 1400°C. Maximum continuous application temperature: ? Tensile strength: 128 kg/m3 90 kPa) 3750 kr = 314 € = 335USD

The Superwool Plus in Sweden is ca. €90 cheaper than the Superwool XTRA and another €130 cheaper if i buy in Germany:
ca.122€ = 130USD  (Superwool Plus 25mm x 61mm x 7200mm) with shipping.

Is the Superwool Plus enough or do I need the Superwool XTRA?

To lay the bricks for the bell, do I use normal cement mortar?

Attached is a sketch with a first version of how I could imagine the steel beams.

Best regards wherever you are
Armin

Hello everyone!
Here is my new setup.
If everything is ok now, I can start building it.
Questions:
1) As you can see in the drawing, the maximum ceiling height is 2.3m.
    I would like to stay at least 200mm below the ceiling.
    This means for the height of the entire structure:
   - on the concrete floor a layer of bricks: 50mm
   - then a layer of refractory bricks as a floor for batch box/riser: 50mm
   - on it riser/batch box: 1300mm
   - cover of the Bell a total of 100mm??? : 100mm
     = 2300mm – 1500mm = 800mm remaining height for the distance between riser and bell ceiling.
   Did I forgot something?

2) The black area in the picture shows the part that I want to remove from the old structure. Down channel to the bottom.
    What diameter should the channel have?

3) P-Channel Dimensions. I'm having difficulty understanding the formula. What are the dimensions for
   this oven?
    Where should I position the P-Channel in this case? At the bottom of the batch box or at the top
    on it?

4)Ceramic fiber insulation mat. How thick?

Now all I have to do is wait for your GO!

Best regards to everyone out there!

Armin

Hello everyone!

@Phil Stevens thank you for your comment.
After that I tried to find a solution but then Peter's post came in with the nockout arguments...

"Starting the thing will be a real problem,..."
"The kitchen side of the heater will get very hot and the small bell will eventually crack apart..."

So the RMH will stays on the living room side.

Now a few questions about the position.
1) Is the position in #1 basically ok?
2) How much space does there need to be between the bell and batchbox and around the riser?
3) how much space must be above the riser to the bell. I read that at least 12" (approx 300mm? ) above the riser. What is the optimal distance?
4)  Must the heater/riser be built on level 2 at the same height as the hole in to the chimney, or can I build the heater/riser lower to around level 1?
     See attached pictures.
5) Is it better to use fireproof mortar or a fireproof “glue”, for heater/riser? Like this in the attached pictures.

Thank you for your patience and sorry if it takes me so long to understand.

Best regards, wherever you are!
Armin

In the last week, Sabine and I have been thinking about the various options for positioning the batch box and the riser and have found a setup that meets most requirements, if it works.
It was an active process with a lot of thinking and trying out, encountering problems and finding solutions.
Then yesterday morning something happened that fascinates me over and over again, each time this happens.
Suddenly there is an idea, completely new, something we hadn't even thought of.
Apparently, our brain is working on its own plan in the background.

Setup Nr1 is the result of our active planning and testing.
Setup Nr2 the plan of the brain.
If you think that can work, we would prefer setup 2.

I hope that the drawings and the explanation are understandable

One more question.
Peter, you suggested in the first post that a 20cm riser could also work, but you said it would be an "overkill". What do you mean by "overkill"? What would be the advantages and what would be the disadvantages. If it's just a matter of "too much heat" being produced, that wouldn't be a problem for us and there's enough space with setup 2. We could also possibly plan an extension, with a sluice (which can be opened as needed) to a canal that leads outside into a future outdoor room.

As usual, I've attached a PDF with sketches and explanations.
We are now very curious about your answers.
Very best regards
Armin