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Walker Stoves Brick Rocket Mass Heater Plans  RSS feed

 
pollinator
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Location: North Olympic Peninsula
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Hi Permies!  I've got another plan set finished up in time for the holidays for you!   I'm excited to introduce the Walker Brick Rocket Mass Heater!



I've been having a lot of fun interacting with you all as you are building your Walker Ceramic Fiber J cores and Cook Stoves, and one of the most common interactions is folks asking for plans to build a Rocket Mass Heater using the 6" Super Hot J Core Plan.  It's such an easy way to build a core, I thought I'd try to simplify the rest of the process as well.  

I've designed a Brick Rocket Mass Heater that can be built by anyone using simple brick stacking and a safe clay/sand mortar.  The core is simple parts cut with a knife or saw from ceramic fiber board.  The brick work can be done with no brick cutting and very little fuss.  It requires about 225 bricks, ceramic fiber board, and some stone or concrete slabs/pavers for bench and bell tops.  A simple build that a rookie can build in an easy weekend, this one is for all of you folks who want an RMH but don't care for the barrel, or have a small space.  It's ideal for a small cabin, living room, greenhouse, shed, etc.

I've put the plans on sale through the weekend, there is a link to my site below for more info.

Let me know how I can help you build your heater, and thank you as always for letting me share here.  Thank you Permies!

Brick Rocket Mass Heater


 
gardener
Posts: 1738
Location: latitude 47 N.W. montana zone 6A
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Congratulations Matt !  You've done it again. If you keep popping up with these really cool plans , nobody will design & build their own anymore .... they will just buy and build yours !  Keep up the good work!
 
Matt Walker
pollinator
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Hey gang, I know I just posted a customer build yesterday, but I got another email today and I know you all are as excited to see new RMHs as I am, so I thought I'd share.  It seems there are lots of builds wrapping up as we approach winter and I am having so much fun helping you all with your builds and seeing them come to life.

Check out this great example of the Walker Stoves Brick RMH by Joshua Heyneke:






You can see more here.

Thanks as always Permies!

 
pollinator
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Very nice Matt - thanks for sharing
 
Posts: 8
Location: Birmingham al
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Forbive me for such a pedestrian question.

What type of bricks are used for the 225 bricks necessary in this RMH? Firebricks?, red clay? Or something else entirely?
 
thomas rubino
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Hi Wes; Welcome to permies!
Looks to me that Matt has a row of firebrick on the bottom and then he has switched to red clay.
 
Matt Walker
pollinator
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Wes, the brick RMH uses standard red clay brick throughout. You can buy them at Home Depot for $0.44, or check your local craigslist for salvaged bricks which is my preference.
 
Posts: 186
Location: Mason Cty, WA
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Hi Matt, these plans look great. Since I have already purchased firebrick in anticipation of finding such plans, I'm glad they're here. How many firebricks does your plan use?

Problem is, the link you posted doesn't seem to work. It does a 404, then when I try to go through your site, I find only a directory tree in that link. Check it?
 
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Hi Matt,
I'm really impressed with your work and am strongly considering buying plans from you.  One preliminary though:  are your brick stoves and rmhs light enough to install on a standard joist-supported floor (18" centers) or would they require some floor reinforcement or a dedicated foundation?  I gather the latter is standard for cob rmhs but is something I'd like to avoid.
all the best,
Peter
 
Posts: 58
Location: St. Andrews West, Ontario, Canada (Zone 5b)
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Very cool, Matt! Those are really nice examples of RMH. Exactly what I've been looking for actually. Thanks for sharing the plans. Cheers!
 
Wes Turner
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Location: Birmingham al
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Is it vital to mortar the red bricks together?

It would be great to take my stove with me when I move one day?

I’m gonna presume it’s a bad idea due to heat loss through the air, but it felt like it was worth a shot.
 
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Hi Matt. We’re planning to purchase your rocket mass heater plans, but we have a couple questions. What’s the difference as far as the amount wood used in the batch heater and the brick heater? Also, we need it to heat 2,000 sq ft, so do we modify it in some way or how do we accomplish that? Thanks!
 
gardener
Posts: 2776
Location: Upstate NY, zone 5
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If you use fireclay mortar, the bricks will come apart cleanly and be easily reusable. This does not meet code which requires refractory mortar, but may be practical if that does not concern you.

Heating 2000 square feet may be a challenge for any single heater that does not use remote heat transport, depending very much on the house layout; and the size of heater required depends very much on your local climate as well as the house size.
 
Glenn Herbert
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A cob or brick bench style of bell may be able to be supported on ordinary wood framing, depending on the specific details, but a concentrated tall bell will most likely require reinforcement or a dedicated foundation.
 
Brandi Shaw
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Glenn, thank you! We’re in Michigan and with our house layout we may need to do two.
 
Glenn Herbert
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In Michigan (= gets cold and stays cold) I might consider making one of them an 8" version, depending again on layout and positioning of the heaters. If it turns out to be more than needed, no problem, just burn for shorter periods each day; if 6" is inadequate, you might need to burn all day, which could be a real pain. 2000 square feet is not a "small house" which is what this particular plan is aimed at.

I might also consider building one 8" system in a central location, with provisional plans to build a supplemental 6" version in the coldest peripheral area if the first is not sufficient.
 
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