You can order motor cycle chains and sprocket from amazon. There several motorised bicycle sites you can order chains and sprocket from.
Jesse
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https://rebaki24.pl/pl/140-rebaki-spalinowe/
Sorry, it is cheating, I know. But next week I am going to order one of these.
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Joep,
If you plan to use it for making chunks for gasification, make sure you order a small enough machine that makes short enough chunks.
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All right. Thanks, Do I hesitate? Well uh, yeah, what can I say? Came here one year ago, sawdust. Then found Gary’s charcoal. Hookway retort and went back to sawdust to get it burning. Today did some chainsawing. Wow, full trailer and we didnot see the difference. There is so much wood. Anyway, the small pieces have to go in an rebak. Can’t build it for that money. So, long story short. Any idea wich one would suit a gasifier best?
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From what I understand only the smallest machine with the maximal number of cutters would be able to make short enough chunks.
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Thanks, I will start with the 100 type. To big for woodgassing for an IC but it will suit my small Atmos boiler. And the land gets cleaned the same time. There is so much bush with nice wood under.
Anyway, if I cound time and material , it is more expensive so make it myself. On their site the meisurements are shown. So if someone wants to make it, it is there.
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True. 24-7 at work is the best. Then you won’t have any time off to spend money either 
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What does your long haired photographer say about keeping bearings in your underwear drawers at 4:10 in the first video? 
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Downright genius, JO.
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JO, l like this wery much! But now the queations!
Are both sides sharpened?
Seems to have more thain enaugh torq for these hefty limbs.
How thick is the blade?
The chunks are crackes perfectly. Just what you want for fast drying and fast gasification.
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“You are such a clever boy.” Sounds like a vote of confidence to me.
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Don, I think probably she lost hope already 30+ years ago
Not really Cody, but thank you.
Good questions Kristijan. The blade is 3.9mm thick. As for now it is sharpened on one side only. For some reason I actually sharpened the wrong side. It pushes the wood back towards me, instead of pushing the chunk out the other side.
The chunker stalled several times after the camera was shut down and it seems I will have to experiment with the position of the anvils to get more of an angle to the cut. Worst case I will have to resharpen the blade and move the support bearings to the front.
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And some safety envil to not cut your fingers. I would have the same itch, cut the limp to the very end. Be carefull not to cut your own limps.
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Nice JO, mine works quite a lot better if I have a bit of an angle on the pieces, don’t know if this one does that.
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There is plenty of wood in the world. No reason to risk anything. If it won’t chunk it will surely warm the house. Everything the folks here create just tickles me no end. How bankers and lawyers and a myriad of paper pushers got to be considered in anyway superior to makers and crafters baffles me.
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Plus some ridicule. That’s what she would say to the dogs
Very true. Last piece into the firewood pile.
Very true too.
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One more quote. I couldn’t agree more.
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That worked really great J-O, perfect crushing of the fibres for a fast dry as well. A job well done 
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Hey J.O. you are actually quite brilliant.
Those who have made externally spiraling-out axial cut blade have discovered the hard way that the past 50% thru the shear cutting the blades side pressures drag INCREASES, needing more torque to finish.
I could see the problem and describe it.
I could never envision a cutting blade solution.
You did.
Best Regards
Steve Unruh
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