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Post by andrewb on Dec 12, 2023 18:53:04 GMT -8
Good day rocket tinker folk.
I did a project where I fitted a Walker stove core into my box stove. So if you need measurements please purchase the plan from walker stoves. My innovation is that I used the secondary air already there instead of the steel pipe. I had trouble that the ceramic board port shrank and became useless in about 30 burns or so. So now I use a port made of 3000F super duty fire brick.
This is a photo of my box stove, you can see the port.
this shows the back wall and the secondary air port which will have a matching hole in the ceiling. I cut out the original ceiling and bypass damper with a welder (torch does not work) then I welded the secondary shut.
this photo shows the center wall, I left a top and bottom against the back so it would stay in place, however the top support restricts the smoke to much to prevent it from smoking into the house when we open the door. also the secondary is too far from the port chamber inlet and the burn is not quite clean.
I will say that top down secondary seems to work surprisingly well and we did cut our wood use from 12 face cord to 6 face cord per year the last 3 years.
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Post by chozen on Dec 22, 2023 9:27:15 GMT -8
Can you show a picture of the tubing visible on top? And describe its layout?
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Post by andrewb on Dec 22, 2023 17:13:04 GMT -8
Can you show a picture of the tubing visible on top? And describe its layout? the stove pipe you see in the photo is not in the working position. I took a oil drum and cut holes in the lid for two stove pipes. The extendable stove pipe from the chimney runs down into the barrel to about 5 inches from the bottom. Then I made a upside down U shape to connect the stove to the drum only inserting this 2 inches into the drum.
I also stacked bricks in the barrel to help store heat. |
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Post by andrewb on Dec 22, 2023 17:17:31 GMT -8
Here is a photo of the burn running.
I feel the secondary port is too far from the inlet to the second burn chamber and the mix is too rich because there are fuel gases flowing in at the top half of the entrance to the second burn chamber. The best is if the centre of the hole is 2.5 inches from the left side in this case. |
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Post by chozen on Dec 23, 2023 13:55:52 GMT -8
the stove pipe you see in the photo is not in the working position. I took a oil drum and cut holes in the lid for two stove pipes. The extendable stove pipe from the chimney runs down into the barrel to about 5 inches from the bottom. Then I made a upside down U shape to connect the stove to the drum only inserting this 2 inches into the drum.
I also stacked bricks in the barrel to help store heat. Ok, is the pipe coming out the top of the box stove, functioning as part of the heat riser? If so, is it insulated? |
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Post by andrewb on Dec 25, 2023 3:47:11 GMT -8
the stove pipe you see in the photo is not in the working position. I took a oil drum and cut holes in the lid for two stove pipes. The extendable stove pipe from the chimney runs down into the barrel to about 5 inches from the bottom. Then I made a upside down U shape to connect the stove to the drum only inserting this 2 inches into the drum.
I also stacked bricks in the barrel to help store heat. Ok, is the pipe coming out the top of the box stove, functioning as part of the heat riser? If so, is it insulated? No it is not , I used the riser-less plan from Matt donkey32.proboards.com/thread/1624/walker-riser-less-core |
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