Tractor with gas?

Yes. Keep them coming Tone. The woodfever will never leave you.

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A humid day, even the wood is not the driest, because it absorbs external moisture. Jan last time mentioned that it is difficult to start when the gasifier is “stopped” for a few hours, especially if you fill the gasifier with fresh fuel before stopping. This is how it looks for me, I helped myself a little with propane when starting, but only for a few seconds,…

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While not the subject of the video, I have to commend you on your attire. It is pretty smart to wear the thing to cover your rear from getting soaked on a rainy day. I never thought of it.

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When my ancestors plowed, they gave horses or oxen better fodder, I also fed the tractor with dry hornbeam cubes, it was a joy to plow, constant strong gas,…





After finishing work, check the filter…


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Tone, everything in those pics looks like paradise! Tractor, gasifier, sunshine, freshly plowed fields, green grass and even buds in the trees if I’m not mistaken. What else can you ask for.

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JO , it’s true, nature is a wonderful work of the Creator, even this apple tree (an old Slovenian variety, it was grafted by my father and planted by my mother) is like an apple tree in the middle of paradise, but the fruit is not forbidden to eat, it’s incredible that the fruit remains on the tree all winter until spring.

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We have an apple that lasts well into the winter here Tone. They are named Fameuse but are usually called snow apples because of the pure white flesh. I’ve never heard of them being grown in an orchard around here but I used to stumble across one every now and then while hunting. Best tasting apple I have ever had. They originated in France so could be related to your tree.

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Tone, is this Bobovec?

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Kristjan, we call this variety “Uršne” here, it is probably very similar to “Bobovec”, …

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We’ve strayed a bit from the topic of tractors and firewood, so let’s get back to it in big style… my son Domen was in the forest with me, and I hitched up a large trailer on tractor

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Side dump trailer. That’s a very good idea so you don’t have to block off the road.

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A short report on the operation of a wood-fired tractor,… I have in mind to state some feelings regarding the use of different types of wood:

  • chips from different types of wood, mainly from branches, work quite well (I mostly use this fuel), but they have a low relative mass in relation to volume, so frequent filling is necessary, there is quite a lot of ash
  • oak is a good fuel, it has a lot of charcoal, but it produces gas with a little less hydrogen or methane
  • birch produces gas with a lot of hydrogen and methane but it has less charcoal, which gives stability in operation
  • spruce and pine (especially branches) give a very calorific gas, well, charcoal from these types is rather small and brittle, so it is a good combination with oak
  • hazel gives a lot of hydrogen and methane, the charcoal is very good, the gas is clean and strong
  • hornbeam is, in my opinion, the best wood for a gasifier, it produces a lot of hydrogen and methane, it has hard charcoal like glass, it has a lot of mass in relation to volume, sap From the funnel it is very clear with almost no tar, it has very little ash, the gas is very clean, this is a record-breaking fuel
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All chips Tone?
Do you happen to test Laurel? We have plenty of that and can be harvested easily. Downside is the leaves.

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Joep, unfortunately there is no laurel wood in our area, so I can’t help you.

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Good report. Good observations.

Unfortunately no oaks, birch, pines, hazel or hornbeam here where I live either.

Mostly Douglas Fir (a spruce); some maples; some red alders; a small amount of cascara and too much annoying cotton woods.

100% confirms my experiences using conifir D.F./spruces for engine fuel woodgasing Tone . . .
Use the branches!! Pulled up stump root tendrils works the same too. But just too time consuming to harvest, clean and process.

Best Regards
Steve unruh

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A fun fact: spruce branches was reported during the woodgas era, to have a energy density, between birch and beech, and give a pretty hard, and very reactive charbed.
My experieces from burning spruce branches in a kitchen stove seems to confirm this.
Somthing i have in mind with the new chunker, just come up with a way to avoid some off the twigs and needles.

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I thought of this information from back in the day too when I made the rebak, I had in mind something like the knives on a forest harvester to cut the limbs off the trunk but in this case cut the twigs from green conifer branches or from the trunks of green young growth trees (alder, birch, aspen, rowan and so on) up to two inches.

The pulling power is already there from the rebak itself but I imagined the small green twigs would fold and not getting cut off, just go through the machine leaving lots of undersized crap in the fuelmix. The plus side is that it would also strip a bit of the bark from the fuel and dry faster with a little less ash.

So I shelved this idea and left it in the back of my head to either develop or to be forgotten. Didn’t put an enormous effort in either on this when I was focusing on getting the rebak to function well. I am sure you will find a simple solution :blush:

Edit : I missed to write that you also have the pulling power from the screw as I have from the rebak, probably even more.

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I have this idea in the back of my head too…

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I’ve been thinking back and forth about this. I’ve come to the conclusion manual labour is less work - if that makes sense :smile:
Leaving the twigs in the woods where they belong, is a win-win. Bringing the limbs or young growth home, with all the twigs still on them, would be annoying to load and unload. Also, it would create a mess close to the “de-limbing machine” in no time. You would have to constantly move it around or clean the mess up, not to drown in twigs.
In my opinion, using a hand tool in the woods - like a small hatchet, machete or the excellent vejnic Kristijan gifted me - actually saves a lot of work in the end. Such hand tools are so light weight you can work them while taking a rest :smile:

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Reminds me what my dad used to say as a joke; “I slept so hard last night that I had to get up 2 times to rest” :smile:

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