Leitinger wood gasifier

Kristijan, some wood chippers will do the same as a rebak when it comes to chipping small branches
Bob

How do you discover bridging without a hoppertemp guage? What is the symptome?
I was expecting bridging when I started to use blocks, but as far as I know I’ve never had any during driving. I do have a small amount of rebak roundies mixed in at all times but I doubt that could do all the difference.
I was just down the basement and lit up the boiler. The news was on the radio so I sat down for a while and chopped up a hopper of chunks. I heard that if we ever planed to visit Wayne it’s no longer possible. USA is closed. We might have to go to North Korea on vacation :wink:
Any development on your fuel shutoff? It’s none of my business, but you know me by now, I can’t stop being a pita. Well, the truth is I miss your posting.

Hello JO…

No worry . Just tell the officials you are a DOW member an show them the soot on your hands and they will give you an escort . :relaxed:

All jokes aside , I would really like to meet you :blush:

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Thank you Wayne,
I’m really glad to hear from you.

I was a bit hesitant to making a joke like that. You never know when you step over the line in a different inviroment/culture. But I thought, what the heck, woodgasers are used to limits being pushed forward.

To bad the pond is so wide, but maybe some day. Until then, keep your camera rolling. Your videos are much appreciated.

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Ha! Ha!
O.K. I will explain American “political”.
You have heard the old saying that,
“When in worry,
when in doubt,
run in circles,
scream and shout!!”
2008 and many came to me in panic wanting to know where to buy guns. Wrong time I said. You will now pay a panic 2x-3x surcharge. 2012 and the gun ammo just panic bought up by all non-shooter “new” 2008 gun owners. Ha! I had to stop target shooting. Or pay a rip-off hoarders profteering. I missed my relaxing target shooting.
NOW, walls and (for some) travel-in restrictions to the USofA.
The current crop of “Panic’ers” watching for the camera light to go on before they do their run-in-circles screaming out anger, rage and fears.

Ha! Ha! This is the good 'ol US of A. Not royalists traditional… Not supposed to be a class system. And will not just as long as
we change out the Rouse’ers in overlapping 2, 4, 6, year continuous cycles.
We only drift astray when we keep any in place too long. They then claim to-know-best for-all.
NOT. Not for me, and mine.
All fruits over mature spoil and need to be turned out.

So rest easy guys. After some of the excesses of 4 year Leaders of the past this is just another swinging back of the pendulum.

Sigh I do miss visiting up into Canada with just a go and come back declaration. The last 8 years sure did not turn that back. I miss this. I blame BOTH pendulum swings for this. And every minute i allow myself to be left-side attention sucked in, I then am forced to banace with some right-side spin time.
Put the whiskey/brandy in the coffee to come out smooth cruising balanced centered.

Keep your fires burning. Engine generating.
Steve Unruh

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Bob, in my experiance chippers make too much small particles and shapes, prone to bridgeings. l was thinking about it, but then l saw JOs rebak. Man this thing fuels a woodgasers imagination!
JO,
Well, not so much of a bridgeing but a very loose oxy zone. With smaller wood l have a nice layr of fine char on the restriction, with regtangular half cigaret box fuel l sometimes see the restriction on refueling. You can imagine this wormholes dont aid to power too much :wink:

As far as l know the prohibition is limited to some muslim countrys, l think if we raise enough money (at least thats the main problem for me :smile:) we could be on our way to the U S of A tommorow. This is on my “to do” list anyhow, wisit Argos…
Perhaps someday… Maybe we make a FOW (fly on wood) or SOW (sail on wood) to jumpm over the pond someday :grin:

Still no change in fuel consumption. Worked double and night shifts, our house drainage has frozen and while l was typing this, a cow delivered a new family member. Not by its own thugh.
But I am thinking about it. I am thinking about lots of options.

I had a couple of great DOW days thugh. Lots of miles, litle petrol burned. And great performance. This makeing things better is such fun!

Oh, and l allmost forgot. I bought gears for my rebak! Heavy duty stuff…

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How do you manage to see anything down there during refuling? I just dump the fuel down as fast as possible. Wife still tells me I smell like bacon when I get back in the car.

The news reported 200,000 swedish people were unable to go to USA. They all had double citizenships. Some of them were doing business abroad and were now denied visa.
Actually I was only teasing, but the only one who really took the bait was SteveU :wink: Personally I don’t mind. I’m allowed to travel, but I never leave the famous woodpile radius anyway.

Wow, that’s good news. I’m looking forward to progress reports and photos.

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Dhaa, dhaa, dhaa (the theme music from the original Jaws movie). Careful what you “bait” for . . . you might not like what you draw in! Chomp. Chomp.

I think gear to gear on one of these is smart and the only way to keep the pincer edges in-time pinch/shearing. ANY chain is going to stretch and pin wear sooner or later.
Some dual overhead cam engines use same size meshing gears, intake to exhaust cams. Maybe??
J-I-C Steve Unruh

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The video preety mutch says it all, just a litle edit to it; when l shut off the camera, l have broken up some ash cake eaven more and found a lot of this glass in. One was so big, broke it in half and seen a perfectly clear inside. So interasting.

Has anyone else ever seen such a phenomenom?

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That ash cake looks exactly the same as I get out of my charcoal gasifier around the nozzle.You must have some very high temperatures going on in there.

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Kristijan, thats funny, I was just about to put up a dump video myself.
As for the ash I think it’s about what I have discovered when my grate was plugged, but the glass material is new to me. I think Don might be right - that you’re running ash melting temps. I know you have been talking about high silca wood in your area - that may be another reason.

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I never had such things and I have potato chipped my grate a few times I think don is on to something it does look a lot like charcoal findings . maybe your short burn tube makes it a wood and charcoal gasifier.

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Don, the temps are still a mistery to me. I dont think l am overpulling the gasifier as l had best power and loweest rail temps this week so far but you newer know without a probe.

JO, how do you break the ashcake at refills at long drives? My thinking is they are most problematic, as the cake is not britle and dusty at high temps, so it cant be broken easily when hot.

Ash buildup on the grate seem to be a short ride problem to me. Whenever I see high vacuum I stick my flat tip poker down the grate slots and turn the grate just a few degrees at the next lightup. I have to be very carful not overdoing it or I´ll empty too much out of the reduction and I get a smokey startup. 6:1 vacuum ratio is about the limit from where I can recover without manual grate poking. A grate shaker operated from the cab is one of the top priorities on my to do list. I think the hard baked crust is from running a long time with ash on the grate.
At longer trips, when the gasifier is up to temp and it´s constantly working hard I never have ash problems.

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We had a nice trip this weekend, visiting my father, and it allso gave me a oppritunity to test the system on a highway.

We passed 430km, mainly highways, and l must say l am wery pleased with the resaults. I noticed mixing a bit of pellets with small matchbox size wood l get best performance.

Cruizeing speed above 100kmh are possible with ease. And the thing l like to see most in on a highway, petrol consumption is close to zero. ln 430km l burned only about 3l!
I burned 2 sacks of chunks and 20 kg of pellets. Refuel every about 30km.
l allso tryed one hopper full of pure pellets on our way back. It holds about 15 kg and it lasted me above 100km without a refill!

With the new manual gasmixer, l learned if l set the mix on the rich side, and with idle rizen to about 1200rpm, l dont need to hybrid on the thrafficlight anymore. In the whole drive, l only pressed hybtid swich once, on a steep highway hill. I can allso stop the engine for a few minutes and start it back ON THE SAME SETTING, rev a bit and driveoff.
Getting better on the 75!

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Wow Kristijan, that´s impressive! I really admire your determination. You are certainly pushing limits forward. 110 km/h continiously is unbelievable performance with that little gasifier.
I feel like I only tramp my own footsteps going just 10 miles to work and 10 miles home every day at 70-80 km/h speeds. The gasifer doesn´t even get properly warmed up and I hardly begin to melt the hopper tar :slight_smile:

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Hi Kristijan,
as Don said… you’r running a “hotty”, consuming also most of your char.
The pellets having more ashes then plain wood as well.
Silica gets only molten at 2600ºC, so that means you’r having a bit of higher air velocity on your grate going on.
The surface of the glowing charcoal must be exceeding the melting temperature of the silica / ashmelting temperature as well.

pro’s: you’l have a stronger gas
con’s: more wear and tear

Maybe: widening up down under ? a slightly bigger nozzle ?

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That´s about what my fuel look like (together with 25-50% roundies)[quote=“KristijanL, post:737, topic:2677”]
Refuel every about 30km. l allso tryed one hopper full of pure pellets on our way back. It holds about 15 kg and it lasted me above 100km without a refill!
[/quote]

So without a hopper temp guage, how do you know when it´s time to refuel?

No constipation symptomes (different airsetting)?

Koen, silicium dioxide melts at about 1700c if l remember right, and a lot sooner if fluxes are added, carbonate wich ash has many. Glass per say is quite sticky as it gets heated above about 800c.

Hmm l take better gas over gasifier heart wear any day. I can make a restriction and grate in less thain half a hour from scrap laying around. If it wuld be ss it wuld last a lot longer.

Realisticly, the restriction gets hit the hardest in my sistem. l wuld guess it exceeds 1000c becouse it is made out of about 9mm thick steel plate and it got bend like it wuld be made out of playdow. Allso, in my previous video you can se ash actualy melts on the restriction. But it works just fine. If l replace 2 per year thats not so much of a problem.
Nozzles and firetube show no sigh or wear.

Koen, why do you suggest bigger reduction and nozzles?

Jan, thanks for the kind words, but you know… Not realy my choice… Its that damn woodgas bug :wink:
And l doo wait patiantly, but with lots of anticipation to see a new topic started, with a title similar to “wood gas powered sedan” or something similar :grin:

I did stop every 30km, only to took in the hopper and get a feel for the pellet consumption. While i did stop and look, l didnt add any new fuel.

With constpation and gas setting its like this. l drive on the same setting if burn pure chunks or pure pellets. lf l burn a mix thain the seting needs to be regulary adjusted, wich is logical. But in general, pellets of corse give a tighter charbed, but a stronger gas with bigger turndown ratio, but bigger danger of ashplugging.

I allso forgot one thing. I had to drive for 2km yesterday to say hi to my grandmother, didnt bother to light the gasifier, so l drove on petrol. I felt loss of power at the end of the road, so l looked back to find the gasifier lit by its self. Nothing special, except the car was standing still for about 16h!!! This has to be takencare of…

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Very nice, smooth and quiet.