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Post by treeclimber1 on Dec 9, 2013 19:54:07 GMT -8
I am really pleased with my first try with a rocket stove. It seemed to feed the wood chips well. The main problem was the slots clogging with ash and slowing the whole thing down. The ash slots are only about one quarter inch wide and rather rough. (This is my first time using a plasma cutter I will use a template next time.) I would suppose widening them out would help. Any suggestions? The other problem was ash blowing into the riser and some hot embers out the top as you can see in picture. This is partly caused because of the fines in the wood chips.  I have some ideas forming in my head, but if you have any suggestions please post them. Thank you for your help. |
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Post by treeclimber1 on Dec 9, 2013 20:16:34 GMT -8
PS By the way the riser is 4 feet tall
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Post by hybrid on Dec 11, 2013 9:15:44 GMT -8
Why not make another slotted plate/grate in the riser? Could clip off any fairy wings your chips might grow while burning
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Post by treeclimber1 on Dec 11, 2013 20:36:50 GMT -8
Here is a sketch of plan B  Riser 6inch X 48inch, port into riser 9inchx 2.5Inch, fire chamber 9inch tall X 6 inch wide X 22.5inch long Do you think this is a good shape? Do you think about 2.5 inches is too much space below grate? I think it will pile up with ashes and embers. I would like to attach the SketchUp file but it is too big. How can I shave some space off of it? More detail tomorrow. |
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Post by treeclimber1 on Dec 12, 2013 8:17:46 GMT -8
Here are some more pictures: side view  Grate  Chips will slide down then bridge under the 1" rod until they burn enough to fall through. This gap will have to be determined by trial and error. Front view without grate  I was not able to get the slot in the riser drawn properly, so there is an extra piece there. Any tips on that would be appreciated. |
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Post by treeclimber1 on Dec 14, 2013 9:24:08 GMT -8
Okay I did some experimenting yesterday. I simulated the sketch as close as could with my test burner. I found out that you can not have much gap under your fuel as shown in the sketch. When the fuel piles up below the grate then it burns great, but that brings us to the first problem, ash cooling off and slowing it all down. It did however lengthen the time that it could go without attention. I am thinking of building the fire box with two vee slots in the bottom with an ash box underneath. Then I will have a tool to run through the slots clearing them every few hours. This should keep it running good, with out disturbing the fuel pile too much. I will eliminate the rod baffle on the bottom of the grate.
If you have any ideas, thoughts, or questions please post them. Thank You
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Post by treeclimber1 on Dec 15, 2013 14:43:36 GMT -8
Hi every one I was just wondering if I was missing any good points. I have a lock down internet filter that does not allow me to access YouTube and I was just wondering if there was something that they got figured out that I don't?? If there is I can probably go to the library to watch.
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Post by treeclimber1 on Dec 17, 2013 14:54:22 GMT -8
I went to the library and watched the YouTube videos. It looks like that one with the wood pellets has a good system.
Will a square bell made out of steel with dimensions of 20x36Inches by about 4inch gap above the riser be about right for a six inch system? The riser I am planning is four foot tall. Of course this outdoor hot air furnace will have a thermostat that will control the fan off and on thereby limiting excessive bell cooling somewhat.
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Post by treeclimber1 on Dec 20, 2013 20:28:34 GMT -8
Hi
What are some good ways to cut & shape firebrick?
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Post by satamax on Dec 20, 2013 23:08:04 GMT -8
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Post by hybrid on Dec 21, 2013 9:13:27 GMT -8
I use a tile saw. The blade and water are more important than anything else
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Post by treeclimber1 on Dec 21, 2013 20:41:52 GMT -8
Thank you Apparently the brick I bought are soft and lightweight. You can see how I cut them today.  They cut a lot easier than wood with minimal sparking. Also it is a very good idea to have a dust collector. So if you need very insulating lightweight bricks that probably won't hold up to having firewood put on it:  . I do recomend the following store www.skylinecomponents.com/ I am using the fiber board for the sides and top of burn tunnel. I am gonna try lining a ten inch pipe with the ceramic blanket and then coating it with the R28 refractory coating. let you know how it works. |
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Post by treeclimber1 on Jan 8, 2014 19:49:31 GMT -8
Just letting you all know I am still working on it and making good progress. I will post some pictures later.
I would like to thank everyone for all the good info on here especially those that organize this forum.
Don't be afraid to be blunt with me if you see that I am doing something that you don't think will work, or you have any advice or ideas.
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Post by treeclimber1 on Jan 11, 2014 18:00:46 GMT -8
More progress at least I hope so. There is always the thought process. It can take time.  inside of riser  The riser composition; two layers of 1inch ceramic blanket, inside layer ceramic paper coated with the R28 rigidizer coating. |
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Post by hybrid on Jan 12, 2014 9:11:07 GMT -8
Looks really nice so far. I'd really like to see some more pictures of your set up and assembly. It's really hard to see what your process is.
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I have some ideas forming in my head, but if you have any suggestions please post them. Thank you for your help.
. I do recomend the following store 
