Linda Questor wrote:Hi John -
Nice masonry job - for a fellow who is just doing his first project! I'm watching with great interest - and plan on getting supplies this week. It appears that you are building this INSIDE a pre-existing fireplace. Is that correct? (The shape and size looks right - but I don't see any evidence of a fire being burned in it - charring, black marks, etc).
You seem to have carpet pulled back, away from the block. Will you replace it "around" the block outline, or just move it out of the way? (I have a carpet 'problem', also) ;D
Do you plan to post the size and amount of blocks and bricks you used? It would be a great help!
F Styles wrote:John I would lay out a dry stack of your bench and then build your rocket stove exhaust to that level for simplicity. if your bench lines up with the bottom of your bell then go with that, but if your bench lines up lower then build it that way.
Linda Questor wrote:Help please? I lost the link to Peter van DeBerg's calculations. Will someone send it to me? Thanks!
Glenn Herbert wrote:I see no issue with a bell close to a masonry wall, as long as there is enough room for air to circulate behind it. 2" minimum for a round barrel should be no problem.
Linda Questor wrote:Hello John -
Sorry if I ask 'stupid questions'...but it's the only way I can understand how the build works and 'why'. And Yes! I am "Linda" - I'm an almost 78-year-old grandmother who prides herself in learning as much as I can - and using as much as I learn. I'm really concerned about our future in the U.S. I think there is a very good likelihood that we're going to be in really big trouble in the near future. I'm trying to plan ahead for all possibilities...and that includes staying warm in the winter if we lose power in our rural area. I've developed a lot of skills in my lifetime - as a lady home builder (designing homes, drawing blueprints & being on the construction site every day), as well as numerous arts and crafts, including woodworking - and knitting and quilting (my 'grandmother bit'). But HVAC, plumbing, and metalwork (including welding - wish I knew how to do THAT!) are my weak points, so I hope you don't mind if I follow along, and occasionally ask a 'dumb question', ;D Thanks again for keeping such a wonderful log of your ideas and work. I'm sure you're going to create a great batch box core....and I hope to be able to duplicate what you do.
Best wishes -
Anyway I thought you already the water system running?
F Styles wrote:my suggestion would be to come out of the bottom of the barrel which would make the exhaust hole a half circle shape for you so you can then go directly into your bench at the height you want without having to do more crazy bends creating more drag for your tiny system, drag for your system is bad. it would be easy to bend and configure your pipe to make a half circle and come down out of the barrel. from the pics i saw you may have to cut into the bottom of your barrel.
John McDoodle wrote: my end wall is less than 10" from where the exhaust will be at the bench end so a sweep wouldn't fit regardless either way. I've never intended on using any sweeps, only a vacuum cleaner to remove the ashes
Glenn Herbert wrote:You have some space, maybe 1/2"-3/4", on the other two sides between the riser and the barrel support bricks, right? That space will add to the flow capacity, and I think it will make enough combined with the 1 3/4 x 8 main exit to work fine.