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Shippable core makers  RSS feed

 
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Hello rocketers,

Has anyone been making shippable cores? I know there has been research on it. And they burn really hot.

I've been thinking of installing a system and the shippable core seems the way to go.

 
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Dragon Heaters makes three sizes of Peter van den Berg's J-tube core design. Other than that, I don't know of anybody actually making a business of it. If you are handy with tools and good at following directions it is not difficult to make your own. Or you can build a firebrick core with next to no tools.
 
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Another source is Walker Stoves, for cook-stove (sidewinder) cores, plus batch-box and J-tube cores:

Walker Stoves
 
Doug Barth
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Thanks for the info! Are there instructions for a shippable core on the internet?
 
Glenn Herbert
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"Shippable" has nothing to do with how efficient or effective a core is. There are plenty of resources, including some threads in this forum. Matt Walker ("broaudio") has a series of youtube videos on casting a core which will be very well insulated and efficient.
 
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Glenn Herbert wrote:Dragon Heaters makes three sizes of Peter van den Berg's J-tube core design. Other than that, I don't know of anybody actually making a business of it. If you are handy with tools and good at following directions it is not difficult to make your own. Or you can build a firebrick core with next to no tools.



Hi Glenn,

I don't see many people posting builds using dragon heater cores.  For the people that want a ready made core, is the cost of a dragon core a barrier do you think?

I see that they are selling the business here: https://permies.com/t/61680/Dragon-shippable-cores-North-Idaho
 
Glenn Herbert
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I couldn't speak for most people, but I did consider a Dragon Heater core early in my RMH exploration, but eventually decided I could cast my own well-functioning core for a fraction of the cost and not too much work. I turned out to be correct. Those without a good array of tools and the skill to build complex things may have a different experience.
 
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Where are you Doug? We are developing shippable cores and complete shippable rockets you just add mass to. Currently the best way to get one of ours is to come do one of our two day workshops and take a rocket home with you. For more information see the end of this thread https://permies.com/t/80/31100/Rocket-Mass-Heater-Shippable-Core
I have used a dragonheater for several years now in part of my house, a Liberator Rocket Heater in one of my cottages, one of my own design in the other side of the house and in my rental and others I've built in a friend's school bus, several greenhouses, and the library at my kid's school. If you are near Cleveland come visit us. If not then watch for us at the Mother Earth News Fairs or join us at the Homestead/ATC workshop at Paul's in Montana in July and build one to take home. https://richsoil.com/atc.jsp Tell them Uncle Mud sent you.
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Chris McClellan wrote:Where are you Doug? We are developing shippable cores and complete shippable rockets you just add mass to. Currently the best way to get one of ours is to come do one of our two day workshops and take a rocket home with you. For more information see the end of this thread https://permies.com/t/80/31100/Rocket-Mass-Heater-Shippable-Core
I have used a dragonheater for several years now in part of my house, a Liberator Rocket Heater in one of my cottages, one of my own design in the other side of the house and in my rental and others I've built in a friend's school bus, several greenhouses, and the library at my kid's school. If you are near Cleveland come visit us. If not then watch for us at the Mother Earth News Fairs or join us at the Homestead/ATC workshop at Paul's in Montana in July and build one to take home. https://richsoil.com/atc.jsp Tell them Uncle Mud sent you.



How do you like that Liberator? Is it holding up well?
 
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