Planning a RMH using a big oil storage tank as the drum. Like a monster one... So the kusnetxov site is really intriguing, but I've not actually talked to anyone who has built a double-bell. It seems to make sense, but there have been enough rocketish stove failures/weak smokies built at my farm already. Also check out our youtube video "The Dome that ate a Rocket Stove"
I don't have to be what you want me to be --Muhammad Ali ... this tiny ad is coming for you:
Experience months or even years of natural building and growing your own food