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Post by ronyon on Aug 4, 2014 19:39:39 GMT -8
They're too nice to just let go to hell.. This! |
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moboy
New Member
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Post by moboy on Aug 9, 2014 0:44:36 GMT -8
I run an eco-retreat in West Africa and work with our local village on sustainability issues. We currently have 25 villagers who want a rocket stove/cooker for their compounds (often between 15 - 25 people per compound). Stoves (called sin kirikiri) are made of a similar size as in the blog but they lack any rocket sophistication. Two questions: I see that downloads are offered at $10; is there plans of the stove/water heater that I can pay to download? The artistry of the 'apprentices' is staggering. Are there one or two people who would be interested in an extended holiday in The Gambia in return for rocket stove assistance to the very keen village group? Deal would be you find the airfare and you can stay at Sandele Eco-Retreat and Learning Centre for as long as you like = all board and lodging found (see www.sandele.com for stuff about us; email address is on the website). |
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Post by patamos on Sept 3, 2014 20:46:53 GMT -8
Sweet building Donkey!
I'm curious how the transformation from L-feed to J-feed went. I've been building mostly L-feed cookers at 4-1 ratios. But have been gaining interest in what a J-feed might offer. What kind of riser to CSA ratios did you use for each? And how have the two styles compared?
well being
pat
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Post by Donkey on Sept 5, 2014 8:24:24 GMT -8
I build J tube cookers pretty much to the usual proportion for RMH. 1-2-4
Erm.. Actually, I haven't measured in SO long, I can't guarantee proportion, but close enough. We build it to the right height for putting a pot on and feeling comfortable stirring it. The horizontal, burn tunnel being as short as possible; this is easy as we don't need to leave room for a barrel.
We tried both the L-feed AND the J-feed this year. I didn't say anything to the folks doing the testing, let them decide what they liked best. The J-feed won, hands down and the one L-feed got rebuilt into a J, very quickly.
Here in the states, we have a "stand up at the stove to cook" cultural norm. The original L-feed was invented for places that traditionally sit or squat to cook. The J is very conductive to standing at the stove, wood can be dropped straight down from above and the wood can be managed easily with a poker or by bending for a moment to adjust by hand. The L-feed wants folks to be low beside it, looking in from the side, pushing wood in for clean combustion, etc. Also, the L-feed allows for more careful wood metering while the J allows for more wood in the box at a time.
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Post by grizbach on Sept 5, 2014 23:34:55 GMT -8
I actually went from a J to an L on my BBQ grill. I find I get more btu's with the L feed. It is more of a hassle fussing with it, but at least I can get up to temp.
With the J I would get heat radiation coming out of the feed box.
It was fine on the room heater when it doesn't matter where the heat is coming from.
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Post by satamax on Sept 6, 2014 0:57:42 GMT -8
I have used batches for this!  |
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Post by Daryl on Sept 6, 2014 9:16:29 GMT -8
I wish someone would build an outdoor masonry J brick oven hybrid so I could see how it compares to the standards. One with the riser leading to the oven and no barrel. The core would have to be made of refractory material. I tried a mini sample over a year ago but the drafting sucked and my setup here sucks so I didn't get a good test. It would be interesting to see the differences in performance.
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Post by patamos on Sept 7, 2014 21:51:46 GMT -8
I wish someone would build an outdoor masonry J brick oven hybrid so I could see how it compares to the standards. One with the riser leading to the oven and no barrel. The core would have to be made of refractory material. I tried a mini sample over a year ago but the drafting sucked and my setup here sucks so I didn't get a good test. It would be interesting to see the differences in performance. I'm confused by your request. Isn't the J oven what Donkey's crew just built? Many folks have built L-feed black ovens. Check out rechoroket or 'Flip and John's first Winiarski style ovens I built my first 6" L-feed rocket black oven last year following their approach. Works great. Others on this forum have too. What kind of comparative specifics are you seeking? Is it the 'brick' material and a set up like tempcast ovens above the fire box that you are interested as constants? well being pat |
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Post by Daryl on Sept 8, 2014 1:37:44 GMT -8
I wish someone would build an outdoor masonry J brick oven hybrid so I could see how it compares to the standards. One with the riser leading to the oven and no barrel. The core would have to be made of refractory material. I tried a mini sample over a year ago but the drafting sucked and my setup here sucks so I didn't get a good test. It would be interesting to see the differences in performance. I'm confused by your request. Isn't the J oven what Donkey's crew just built? Many folks have built L-feed black ovens. Check out rechoroket or 'Flip and John's first Winiarski style ovens I built my first 6" L-feed rocket black oven last year following their approach. Works great. Others on this forum have too. What kind of comparative specifics are you seeking? Is it the 'brick' material and a set up like tempcast ovens above the fire box that you are interested as constants?
well being pat
Yes. I haven't seen an outdoor j oven made out of brick with either a black or white oven.
I know it can work but I haven't seen it done yet. If there is an outdoor brick J, then please point me in the right direction.
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Post by patamos on Sept 8, 2014 21:11:34 GMT -8
Interesting how the Aprovecho L-feed became a norm. I thought it was primarily because it concentrates more heat into the riser, but ya, ergonomics makes sense too.
well being
pat
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Post by Donkey on Oct 15, 2014 6:45:03 GMT -8
I think the L-feed became the norm because Aprovecho was better at getting their thing out, also earlier (the L came first).
When Ianto and Larry made the split, I believe part of the deal was that Larry would ONLY use the L and Ianto would ONLY use the J.. Seems silly to me, but who am I to judge someone else's arguments, twice removed??
I've used both and find the J to be superior. Better ergonomics, better arrangement of wood to air intake, less fiddling, etc.
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Post by Daryl on Oct 15, 2014 9:16:36 GMT -8
I've used both and find the J to be superior. Better ergonomics, better arrangement of wood to air intake, less fiddling, etc. I'm thinking a way more efficient burn too. To use a fun and playful term, the L seems as though it would be more of a Log Hog. |
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Post by patamos on Oct 15, 2014 21:57:54 GMT -8
In my admittedly short life as a rocketeer, i've noticed that the L-feeds breathe more freely - especially with the underside air feed tunnel. I've built the risers at the minimum height (3x feed tunnel width) and they have performed well enough. Although adding a few inches to the riser helps. But basically their compactness is a plus. And ya, the easy flow of gasses means bigger logs can do the horizontal cigar burn.
That said, i'm sold on trying a J for my next cook stove/oven build.
well being
pat
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Oct 16, 2014 2:42:54 GMT -8
My family uses rockets only for cooking in a hot humid area.
L-feeds are useless there, smoking like crazy under such conditions.
J-feeds can burn very wet wood without problems.
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Post by patamos on Oct 17, 2014 20:40:33 GMT -8
Kari,
Are you talking about an optimized L-feed, with air feed tunnel (below the wood feed) that meets a metal grate in the riser to keep the coals suspended?
If so then i am more sold on the J.
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