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RMH heart transplant !  RSS feed

 
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Location: latitude 47 N.W. montana zone 6A
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Hi All; So... my plan of using all castable refractory to remake my core has gone by the wayside ! life has gotten in the way again. instead of having all summer to carefully rebuild,... i have 2 weeks to get it done , before work goes to 7 days a week with 12 hour days, out of town ! Not having the castable on hand means that i am using firebrick instead, also not having the time to hunt up more of the super lite firebrick i will mostly use my stash of heavy ones. My original core, was a poured core using matt walkers mix of fire clay,perlite and a little refractory. The heat riser itself and the end of the burn tunnel all look as good as the day i poured them ! The problem for me was at the feed tube end not being able to hold up to my ramming wood into it , despite patching several times and painting waterglass on the walls, by spring instead of a nice 7" square hole I ended up with a hole the size of the 5 gal barrel that i had used as a feed tube !(had to be partly covered to prevent backdrafting ) Worse than that was when the roof of the burn tunnel at the feed tube end started falling away! Amazingly even with all that i still got barrel top temps over 1000 and no smoke out the chimney! During the teardown I discovered that at some point a hole had burned its way thru the roof of the burn tunnel and was venting into the 55 gal outer barrel ! And it still WORKED ! After a long winter in the green house i pulled apx. 2 gal of super fine fly ash from my collection point ! None was built up at all in the horizontal piping! I couldn't be more happy with how this stove works, anybody that burns wood should be TOLD about them ! Following are pictures from the tear down .
RMH-rebuild_3_01.JPG
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RMH-rebuild_5_01.JPG
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thomas rubino
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Posts: 1274
Location: latitude 47 N.W. montana zone 6A
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More pictures , showing hole into 55 gal barrel and condition of the rest of the burn tunnel
RMH-rebuild_7_01.JPG
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RMH-rebuild_17_01.JPG
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thomas rubino
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Posts: 1274
Location: latitude 47 N.W. montana zone 6A
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and more, note the condition of the concrete slab that the core was sitting on , no heat damage at all.
RMH-rebuild_20_01.JPG
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RMH-rebuild_25_01.JPG
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thomas rubino
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Posts: 1274
Location: latitude 47 N.W. montana zone 6A
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One of the many thing that make this stove so neat is being able to reuse all of your building materials ! I carted the chunks of cobb out the door and placed them on a tarp. The pieces of cast core were placed in 5 gal buckets and placed out doors, where it is conveniently raining on them . In the last picture you can see i used brick to form up my base, then i reconstituted my cast core and made a 3" thick pad to start construction on.
RMH-rebuild_32_01.JPG
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RMH-rebuild_29_01.JPG
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thomas rubino
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The bottom of my core set and bedded with the other 1 1/2 " of castable and the start of the burn tunnel
RMH-rebuild_36.JPG
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RMH-rebuild_37.JPG
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RMH-rebuild_38.JPG
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thomas rubino
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and more , its starting to take shape !
RMH-rebuild_39.JPG
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RMH-rebuild_42.JPG
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RMH-rebuild_43.JPG
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thomas rubino
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Location: latitude 47 N.W. montana zone 6A
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More pictures ,the cob on the barrel is not done ,but the dragon has been refired !
RMH-rebuild_51.JPG
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RMH-rebuild_54.JPG
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RMH-rebuild_61.JPG
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thomas rubino
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More
RMH-rebuild_65.JPG
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RMH-rebuild_71.JPG
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RMH-rebuild_67.JPG
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thomas rubino
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Location: latitude 47 N.W. montana zone 6A
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Almost done, cobb needs to be a little thicker and it needs some smoothing but almost there. Five cord split and in the shed ... hope that it will be all i need this winter ! ready for cold weather !
RMH-rebuild_72.JPG
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I'm so happy! And I wish to make this tiny ad happy too:
What makes you excited about rocket ovens?
https://permies.com/t/90100/excited-rocket-ovens
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