I never realised it had such a significant effect - great demonstration.

I got here from another stove video, where I'm yelling at my screen to someone talking about poor burn time while I'm looking at their air control wide open. Good looking stove, and looks like you got it burning perfectly at the end. Love seeing other people know how to run a stove.

Now why did nobody teach me useful stuff like this at school? Very insightful and living with wood stoves that fingers trick is going to come in very useful.

If you want it to be more efficient shouldn’t it draw air from outside the building you’re trying to heat up?

Nice work.

🔥🔥🔥

Random KZbin recommandation, but I am glad to have seen this. Cristal-clear explanation, very pedagogic, with demonstration... Bravo: I have learned something today, and in a way that I wont forget it. Thx!

What a great video, very informative. I'm intrigued by your location...I saw UK plug sockets on the wall but your accent seems North American. What's with that?

Can you please go back in time and teach my highschool physics class?

Thank you. The theory part was 5 stars

What welding stick did you use?

just burning wood efficiently is pointless if all the energy is whooshed away through the chimney... if you just want light then candles are better for that.

Instead of sheet metal, why not use mesh? Same effect but less weight. Great vid btw.

Fantastic

Wonderful explanation. I knew about Bernoulli's effect but never imagined this application. This opened my mind to several other uses. Thanks. 😊

if you are not teaching physics, you're wasting your potential

Tried teh small air hole with fingers... wow!

Thanks for cutting out all the fluff and getting to the highlights and telling a story. Have subscribed!

Really cool design ! Maybe you could add a system to get the heat from the exhaust gases ? I saw some experiments like this before, cooling the exhaust to about 60°C, which inreases the effeciency of the stove. Nice video and great explanations by the way.

Would love to see your stoves for sale!

Nice vid. Also very big fan of your induction heater

Nice!!

I'm amazed by your way of explaining this topic. When I studied physics, the only thing I remember is the name: Bernoulli, but now I can fully understand the principles, which I now believe were fundamental of Venturi's principles. I wish I had teachers like you

The satisfaction of eating bread from wheat you have grown and milled yourself will be an amazing thing.

Man what a great video! Excellent explanation and demonstration, with no useless filler to pad the runtime.

Fantastic build! I love how great of a teacher you are!

can we see more of the tests?

Dude, excellent! Thank you

I love it, so many ‘restoration’ videos go overboard, making it seem like a Herculean task to take something apart, clean it, paint it, and re-assemble it. Quick, to the point, and functional.

Nice machine!

Wow, this is just a great video. Informative, on point, understandable examples, all day life use. I'm fascinated. 😮

Oven restoration would be so cool!!!

Wouahhh!!!!! Excellent ❤

Being the opposite of mechanically inclined, I can't help but to feel anxious seeing any machine, even a relatively simple one, taken apart like that. Lol, I can't tell you how many times I took things apart hoping to fix something and it never functioned again. I had confidence that this wouldn't be an issue for you here, though. Thanks for another great video!

will the upper space trap a lot of ashes in long run and difficult to clean?

Very cool video! Thanks for taking the time to create it!

Could this be scaled up and still function the same?

Hey man that was very interesting thanks a lot you know your stuff! Exactly what everyone wants you have made! I am looking at getting a new stove around 8kw what would you recommend, I’m in the UK? I have started restoring a villager B that I bought secondhand as we love the look of them for our cottage but what do you think of their design and efficiency? Would you buy something else or continue with what I am doing?

rub ash on the glass.

This is wonderful! Thank you!

Excellent...want to build one asap for my brother. Can you send me your link of the parts cutout?

Great video, the secondary air could be improved though, you are only heating through that square tubing now, missing out on a lot of surface area, you could make a box section out of the plate instead.

Do not stop. Your page is an absolute trove of applied physics and engineering.

Video in the power hammer? !

We see this demonstrated in sailing and very dramatically. Great video

Great video mate. Nice to see a different project. 👍 from 🇳🇿

Thank you for not making this a “short”. I hate them and almost never watch them.

For anyone generally interested in burning solid fuels efficiently, I would like to point out the works of one L. D. Porta, he worked with steam locomotives, but some of his work is relevant to any fireplace burning solid fuels. One of the basic things he noted was the fact that the existing locomotives he was working on originally had primary/secondary air ratio of around 80/20 %. And he noted that this was problematic. As the more air was fed in, the hotter the fire burned and so would release more combustible gases. Because of this, regardless of the flow rate, little oxygen made it past the bed of coal, and simply put the secondary air feed was found inadequate to complete the burn. On the other hand, simply opening the secondary air holes more, was not ideal either. He discovered that sometimes the locomotives actually had even fist sized lumps of coal sucked all the way to the other side of the boiler, in what is called the smoke box. He figured that the amount of smaller particles flowing through the boiler more or less incompletely burned must have been significant. With these observations he set out to make alterations. He figured out that the ideal ratio for primary and secondary air feed should be completely reversed to 20/80, with the secondary air carefully mixed into the fire above the bed of coal. So he made alterations that would significantly restrict flow through the bottom grill and add a system of air distribution pipes all over the firebox distributing most of the airflow as secondary air. Then he did some other work, more specific to locomotives, which I will ignore at this point... But overall he did achieve significant changes to the locomotives he worked on. The fuel consumption was lower, and even fires along the track, which used to be a constant issue during the time when steam locomotives were used generally, stopped. When I first read about Porta's work, I did think so many things just made sense. In a way it is a bit sad that by his time the age of steam locomotives was already fading. But he did draw from the works of legendary people in the field and applied scientific methods to locomotive design. It is a bit sad that he only could do alterations to existing locomotives, as he wanted to design a completely new model and as far as I know, worked on his designs pretty much all his life.

Absolutely outstanding - good design/test/build process informed by the science, and a thoughtful, articulate, clear and succinct commentary. BRAVO! My (commercially made) stove has a very similar design (save the secondary air channel takes a 90deg turn to the back of the stove to lengthen it; and the baffle is hollow, drawing tertiary air in from the back and injecting it at base and top of the slope). It was the first in England (1993) with this design approach. With what I've learnt since, the only way you could substantially improve upon this is to encase it in masonry, soapstone or Silicon Carbide to make it a mass heater. The extra insulation adds to efficiency as well as lengthening the refuelling intervals.

Our Woodburner is 83% efficient,,is 5 years old,,and has all the bells+whistles,,it will burn overnight with coal no problem 8-10hhrs...