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  • Ever take it off any sweet jumps?

  • Hi, where do you got this big Fresnel Lens from? and how much did you pay for it?

    greetz from germany :)

  • @Bosedrein OUR WEBSITE GREENPOWERSCIENCE

  • This setup would work well with induction.

    You could place a tiny magnet on the wheel and spin it near a tightly wound copper wire.

  • You could do something insane, like put a long heat chamber down a parabolic trough & run several water mist injectors. Link several of these piston/heat chambers to a crank shaft & run a full sized generator.

    Could even use fire to heat chambers when sun goes down, in an emergency.

  • Water should burst into flash steam inside the chamber, increasing pressure for more horse power.

    Set it to squirt each time the piston reaches its lowest point.

    Would turn that heat motor into an ICE motor that runs on sunlight & water, the combustion being water exploding into steam at timed intervals rather than gasoline or diesel exploding.

  • Here's a suggestion for dramatically increasing horse power.

    First, replace that glass chamber with a strong, metal chamber. (you'll see why in a moment)

    Next, tap a small water nozzle into chamber wall to shoot a few drops of water directly into chamber.

    Hit chamber W/Fresnel. Squirt those drops of water on inner chamber wall right beneath the hot spot.

  • ok... it might be a good idea to hook it to a dynamo, and generate electricity... but what shall one do, when there is no sun? like a cloudy day, or during the night?

  • u bought that off ebay

  • i dont understand why china doesnt use this for powers all the need is solar panels and heating coils

  • Di you finally get your DYI engine working? What's the final design?

  • Great engine =) could you tell me how much efficient such engines are?

  • Brilliant! Congrats

  • I am starting to really enjoy your site. But please please, when you run a Stirling, put a load on it! Then we can begin to calculate what we need to scale up to for practical purposes.

  • just curious,what can you run with this,it dosen't seem to have much power...but I have an idea for some power but no time to work on it,please e-mail me,I would like to know what you think if you are interested..

  • Is beta stirling best than gamma stirling?

  • badass

  • Comment removed

  • On a Stiiik

  • There are real life applications for this kind of technology developing in the world. Read the wikipedia article for more info.

  • i belive this is more to give sparks in the minds of people.encouraging  new thoughts and ideas

    not the 100% final solution.

    we live in a world filled with energy. now thats a documented fact. its just to find out where and how to plug in

  • Here in sweden, it get's realy cold at winter. The cold outside can be used to cool the "cooling" part of the engine, and the other end can be heated by a small fire on the inside. You get both warmth and electricity, from such an engine. Thinking of doing something like that this winter. It will work without the fireon the inside, but would cool down my house to much. :) Dragging the cold in by the engine...

  • once again, what is the usefulness of this device?

    what power does it achieve? power a drill? power your lights in your home? what? i just don't get it. maybe it recharges a few niCad batteries...so what. what does this really prove in the real world??

  • It's about the possibilities... That it can be done. In a larger scale this is one of the best "free" source of electricity.. :P

    (Need's to be sunny.. )

  • How do you calculate the diameter of the Fresnel lens and could you use a standard magnifying lens just as well and would a larger diameter generate more power, always assuming that the steel wool, or other conductor ,could absorb the excess heat?

  • I love it Dan. Now, can we put some coils around it, and a few magnets on the wheel? 4200 rpm!!! come on man! lets make some juice!

  • sWEET LITTLE ENGINE THERE DAN. NICE VIDEO. I WAS WORRIED ABOUT THE TEST TUBE CRACKING UNDER THE HEAT THOUGH. THAT LENS IS A FAIR AMOUNT OF POWER. I GUESS THE TEST TUBE ON THE CHAMBER IS REALY TOUGH.

    FIVE STARS.

    MUDDy

  • Cool, the only draw back of the Fresnel lens is you'd have to keep adjusting it somehow to keep the motor going. I much more liked the trough one as it made a lot more practical sense.

    So build on that, would love to see a real world implementation

  • It can be moved automaticaly. Think he already built it in another video.. But i can be misstaken. :)

  • beautiful!

  • you did it... we dont need cars anymore

  • Could you hook a belt to it and run a fan, or pump some water, or something to would do some mechanical work?

  • Wow more rpm then a electric drill.

  • on a steeeek

  • thats a sweet engine . I got one of those LED flash lights with a hand crank generator. I think this engine would turn it. I can turn it easily with the edge of my finger

  • question....if its a flash light, wouldnt you only need it when its dark? and you need light to run this engine....

  • I was refering to using the generator in the flash light to see how much juice it can make > and I dont think it can make enuff light to run the sterling engine . But it would make an interesting experiment to see how close it " can" come. Worthless appearing experiments are the key to real scientific breakthroughs

  • oh i agree with your last statement 100%....i was just questioning to get more details on your idea...

  • in the lighty it has gears . when I crank it at 60 rpm's the gen. is turning 600 rpm's . so this so this engine has more than enough power to crank it without the gears.the flash light it self is assisted with batteries. so with extra batteries hooked up in parallel to take the extra charge while the sun is up and and discharge while the sun is down( to the LED's) perpetual lights .I know they allready have em in solar cells, but this could be the first one with a sterling engine

  • yea dude, with a 10:1 ratio on that gen. it might work.....make a video and let us know how it works!

  • one problem, this aint my vid and I dont have one of these sterling engines

  • thats 2 problems...but i know its not your video....and make a sterling engine...

  • High RPM, but no torque.

  • Love those stirling engines, they are even great for getting some power off heat from many devices that would have been lost otherwise. I have designs for some devices that are lined with them, just for that purpose, so nothing is wasted. When heat is involved of course. I first learned about them from a show on Dean Kamen in the late 90s I believe. *****

  • "steek" lol whats with the weird music at the end?

  • This looks like it has some potential!

  • change those wheels with permanent magnets and somehow mantle the copper coil around it!! and then check how much electricity and voltage do you get!

  • i think this is really what people are looking for when they ask about power

  • give it maximum power!

  • Pretty damn fast!

    You should keep in mind that if you were getting some sunlight on OTHER areas of the piston (which are supposed to be as cool as possible) then you could also partially be defeating yourself.

    A mirror array plus sterling is supposed to be the most efficient commercial power method from sunlight available.

  • you always have good videos dan I wish I had the money to get a peice of ewuipemnt like that I have bought one of those page readers fenel lens those are cool as heck I'm going to one day use them to make a hot watter heater so I can use it to keep the watter warm and to warm my shed

  • What moves the piston?

  • Boiling water pushes the piston until it reaches the end of the cylinder & on its way back the slightly cooler water returns via condensation through small grooves/holes in a part of the metal.

    I have not opened up a Sterling engine so I don't have exact parameters.

    However I'm sure Dan Rojas (?) Could explain the mechanical part better.

  • No water in the machine. Just air.

    But the process is pretty much like u explained it. :)

    However, in some stirling engines the air is compressed inside for a better effect. Much like a frigirator compressor is. (no air in that of course)

  • I doubt this is just air, it seems to be water.

  • Nope, no water. Just air. Stirling engines does not work with water. Google it. ;) This is not a steam engine.

  • lol someone watches dunham jalapneo on a stick lol

  • Ever make one of those solar stoves dan?....that would be a great show!

    Thanks for all you and your team does!

  • Yes.. I would like to see that to. :P

  • what would really good if some kind of motor to make power

  • like it better when Dan was working on other stuff.

  • still most of the stuff with the lens have no practical use

  • I read one source claiming the sterling engine can reach up to 40% efficiency, and that's better than any combustion engine, not only for that reason.

  • dan u should make a video of how u convert the mechanical energy in the engine to electricity for like a fan or charging a battery

  • on a steek, LOL, Jalapeno pepper on a stick

  • what kind of emissions does stainless steel wool emit?

  • We need more power captain!!!

  • More power but this is still excellence !! 5/5

  • Agreed....

  • you should attach a dc motor to that and see what kind of load you could support =D

  • Good video Dan.. You need a bigger Engine for more torque and a larger chamber... I can see you applied a light "load"... Anyhow.. I have a mini electric motor, I can get about 9vdc out of 1200Rpm.. That's probably around 18vdc at around 2400+. I think if their was enough torqueand the rpms would not drop much upon small load, you could get at least 24Vdc out of that.

  • AWESOME!!! :-)

  • on a steek! :)

  • it looks like the torque is too weak to be able to power a generator mechanically, so using a magnet attached to the piston inside a coil might be a better way to go!

  • Larger Stirling and larger solar amplifier thats the way to go...30 ft dia 25KW yea BUDDY

  • If the piston was magnetic and there was a coil around the outside of the piston, this would generate electricity to charge a battery.

  • joelito101

    I believe there's already a model of Stirling generator that works on that principle. It's sold with a parabolic antenna like the old satellite tv's used to use. Some sources say it's more efficient than solar cells.

  • watch?v=vCleMqdGqug He mentioned it in another video taking an engine apart.

  • Comment removed

  • That's actually quite brilliant.

  • Thank you, I saw it on another video.

  • interesting

  • Sterling or steam engine combined with solar concentration I believe is the future. This is actually far more efficient than any other practical solar technology today. And of the two I believe Sterling engines are far more practical, reliable and safe for residential applications.

    Nice video Dan! Thanks.

  • that really does not give much information on the power of the engine. could you hook it up to a fan or an electric generator, that way we can have some idea of its ACTUAL power? also, just from this video it seems like it has allot of torque but very little horsepower(is that the right word?) but this could just be an allusion from the camera.

  • Have you ever hooked a stirling engine up to a generator of some sort? This is really interesting BTW! I wanna get me a fresnel lens to experimnet with.

  • Just a small DC version. watch?v=20wQOZbHXvo

  • Nice vid, wanna see more of these

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