Building surface

Hi
I am amazed by the sinplicity yet sophisticated way these thing work. My question, does the rmt heater need to be built on a concrete floor or could it be built on a regular wood subfloor? Thanks

Don Hunley : In both cases, your floors need to be protected from the extreme heat being given off by the Rocket Mass Heater, you can easily set fire to a wood floor or
generate such high temperatures as to cause the concrete floors to spall and break up, we generally so that the 'lime' in Concrete will start to break down if exposed to
400*F for long periods and for relatively short periods above 600*F !

Goto> Length of exhaust pippin mass? (rocket stoves Forum )and scroll down to George Brabants Thread Extension/Post of November 9th ! with proper
insulation you can build in ether place but for a good video series about building beautiful RMHs right _

Goto > youtube.com/user/villagevideoorg/ this collection of short videos is 3/8ths of the whole collection of short videos now on sale at villagevideo.org watch the
whole thing, It will change your idea of what a RMH is from simply a very efficient way to burn wood, to beginning to understand that this is that and a transformative
device that will recreate your home into a more family oriented place, and make you plan your day more and more efficiently to allow you to tend your RmH much better
and get more and more heat out of IT !

Come back here after you have l@@ked at both sites and someone will answer your questions and help you plan a next step ! Big AL !

thanks for info

looked it up, interesting. i suppose i need to get a book and some videos before i ask a bunch more questions. i have seen different types of rocket tubes, one is square (fire brick i suppose) and the others are round (insulated pipe) does the round shape cause a better flow than the square?
the videos were interesting but did not describe how much insulation/ brick from the floor. looked like they used one brick and one large paver. 4-6"?
very cool stuff, now i have to find the right spot for one. currently have a soap stove wood stove that is very nice, efficient, and already in place (no work involved) but i do like the idea of not splitting much wood anymore!

don

Don Hunley : Look at your name and then l@@k at mine, for the rest of the year we are again asking people to give us a location and their Growing seasonal # if they know
it, it will help with most of the questions asked here at Permies.com

At the top of the page below the Permies Ad Banner and above the Permies Video clip of the day, is the Permies Toolbox select the My Profile Button which will put you
on the profile page so that you can help us help you !

With over ~100,000~ RMHs built word wide, there is still only 'The One Book', Ianto Evans' Great book Rocket Mass Heaters, goto> Rocketstoves.com to get your PDF Copy $15.oo
instant download and print up the copies you need, one low price ! (and I do not make a dime !!)

Most of the worlds RMHs have been made following 'The Book' and 95%-ish of all the First builds (that worked) were made following plans from 'The Book',

There is a learning curve but after you learn the simple vocabulary so that you can talk to your fellow members, or at least the Rocketeers, scope out the geometry off the
builds layout, and review a little 4th or 5th grade math, you can come back here sure that you can ask any of your questions so that your peers will know what it is that you
want more information on ! For the good of the Craft ! Big AL !