Hello Joni, I often think of you and your system, it really is a fascinating product with minimal weight that works on raw wood. 
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Tom, I plan to make the diameter of the hot zone approx. 35 cm, and the restrictor tube 25 cm below, which can be replaced with a larger or smaller one, which means adjusting the unit to the size of the motor or the consumption, if you compare these dimensions with the WK unit, you can find that this would had to reach such a capacity without problems.
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Your trash is my treasures on DOW.
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Great to hear again from you Joni! Hope you do ok, relatively speaking.
Great design Tone, easy interchangeable heart. One question, stupid one of course, what about leakage trough the ashes? Is that really tight enough?
Thanks for sharing.
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Good statements of purpose Tone.
The two toughest the wide range of wood forms you want to use.
The extreme light weight goal.
I am glad in-a-war-zone Joni still follows us; and chimed in.
He is the weight saving King of us all.
Observe back his whole-top covers and their simple light weight spring rod latches.
Hood prop inspired I’ll bet.
The best of any I’ve seen is in the Wife’s Ford Edge car:
Second picture does not quite show I have this spring steel rod pulled upwards 15mm in tension.
And this Ford; unlike all others I’ve had used the spring of the actual rod to hold it not-in-use tight and quiet. All others use an insert plastic pivot socket. A plastic two finger snap rest holder. These age and break! Making a mystery rattle under hood.
Real smart engineer on this FORD. Using only two pieces instead of four.
Real smart of Joni too.
S.U.
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In the new year, we haven’t had a “serious” discussion about the processes that take place in the gasifier, but when I use my tractor and test the operation under different loads and using different sizes of wood, I can say that it passed all the tests quite well. Why I’m writing this is because I’m thinking about a cogeneration unit that could work 24 hours with a maximum power of up to 10kW, but mostly with a small load. The gasifier is said to be a kind of hybrid unit between a gasifier that produces gas for the engine and a central heating boiler with a large volume of fuel. The idea is that there is always a large amount of charcoal below, which is produced higher during the pyrolysis of wood, most of the pyrolysis gases rise up and there would be the possibility of combustion by supplying air to this part (I don’t have an exact idea yet). Burned gases and water vapor would be cooled on the water-cooled surface, where most of the water condenses, and the burned cooled gases are sucked out by a small fan through the non-return valve into the chimney. In this way, it would maintain a hot area below with a lot of coal, and when the need for high power on the engine suddenly appeared, it would have the opportunity to get a large amount of quality gas, since the combustion above would be reduced or stopped, and the condensation of steam would still be more intense,…
You can expect a sketch that doesn’t exist yet.
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Yes, sketches please. Interesting
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Tone, you already got my attention and now you got me really excited. Yes, sketches😀
My first step before a serious woodgasattempt is the Lister running without to much attention. Not to much work anymore, but today I am working. This month is crazy busy instead of some time for playing around. My plan is gridconnected and there for a steady load. It still doesnt write off the drizzler system. Maybe with a closed condensing tube above.
Interesting that you are so happy with that venting pipe on your hopper. Exciting year, thanks for sharing and keep it coming.
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Hi Tone; what you are striving for is the same as a well developed liquids fuels to flexible-use suppling carburetor.
The earliest gasoline mixers were simple surface vaporizers.
Next came air up though the liquid fuels bubblers.
Both only able to steady load state supply. In a narrow temperature range.
As a young man I was enamored with simple. So I came to love SU, Solex variable Venturi; just one needle and seat, carburetors. Not so good at cold starting to warming up. Not so good at snap sudden accelerations. Not so good at quick off-throttles.
It took me years to do a thinking turn-around, taking formal training classes; and the right books; to learn the change-steps needed that had to be satisfied in the more complex many parts gasoline carburetors.
And even them were biased for narrower range economy. Or rubber burning power acceleration. And only a very, very few able to take me salty-sea; up across 1500+ meter mountains passes to the inlands empire wheat growing lands all in one day. Without coughing, stopping choking and spark plugs fouling out.
The magnificent Webers with thier multi-staged venturies and well developed emulsifying wells. . . would frost up their air blender bleeds without constant air-in heating here wet Westside.
Simpler was better at the cost of more fuel use.
What you are proposing is a Weber style approach. All in one concentric.
I think (only an, I-think); you may have to do a two stage spread capabilities system like the very best multi-barrel Rochester gasoline carburetors evolved into.
Both ways complex. Requiring a higher level of Operator.
Please do pursue this.
Regards
Steve unruh
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The sketch does not bring anything surprising, the nozzles for the supply of “secondary” air for burning pyrolysis gases will be installed quite high above, this supply will be “active” with a small flow of gas towards the engine, but when the flow increases, this flap closes. The fan will be of very low power and will not reach a high negative pressure, so the non-return valve will close easily when the engine increases gas consumption and negative pressure appears in the gasifier, well, there is no need to explain what happens in the lower part, this is actually a tried and tested procedure, added it will only be a rotating disc for emptying ash and clinker.
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Well, I did understand you correctly. But now you get the tars in your heater and you have to make sure it is hot enough when they get burned. The Atmos is kind of smelly if tar pases the charcoal.
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Tone, I use this grate. Stolen from a french or belgium YT. Works great and central nozzle ready 
. Preheat is difficult. It might be something for yours, or not .
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What is the diameter of your tube to the grate? Very interesting concept.
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Bob, I think the innertube is 140 mm/5.5 inch. Grate is aprox 1/2 inch smaller. Dont take this to serious, here are only a few woodgas masters and I am not one of them But I like the concept too and especialy Tone’s central nozzle for burning charcoal.
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at the risk of looking like an idiot
what is a YT?
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Here he is. He left his Drizzler and went back to his GEK where he started. From French speeking Belgium I see now. Maybe he speaks Dutch also like Koen.
Sorry Tone
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I believe it means youtube, Trigaux.
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The grate here, you mean?
All of his efforts are too small fuel bits specialized for my tastes.
To much other steps; and energy inputs to make augerable-in fuels.
Too limited use specialized.
Like watching 2-stroke mini-model airplanes or helicopters. Fighting Bots. Robotic house vacuums and robotic lawn mowers. Car drifters. Geekie games players who cannot heat and power a house or shop without digitizing it.
Steve Unruh
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It might be of interest to someone, I think it should be a candidate for conversion to wood gas,… Jenbacher JW 20K. I’m kind of thinking of using it for cogeneration for my house,…
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