Thanks for this wonderful and precisely detailed video! One small tip: The difficult process of coaxing the plastic bottle piece around the two tight-fitting lids should become very easy if you just freeze the lids first. They will only shrink a tiny bit during the freeze, but it should be plenty, and as they warm back up, they'll snug into place.
Thank Myfordboy for this nice video. I have just built this awesome device and it works like a charm. I followed the indications from the video and measures in the plan as close as I could. It took me three days (most of the time awaiting for the glue to set). Some tips that could help others to success (many have already been commented here): 1) Do not use a balloon for the diaphragm (as I firstly did) since it is too stiff. A latex glove is the best choice. 2) I have found that, at local markets, the circumfererence of different 2 litre PET water/soda bottles varies from 30 to 33 cm. The travel sweet tins have around 31 cm so finding a bottle that fits properly was not that easy. If difference doesn't exceed a few millimiters, electrical tape can be added around the tins to get a perfect sealing. 3) Everything should run very very freely. Make sure there is no friction in the wheel and/or in the displacer needles. 4) PET deforms with high temperatures so I would not use heat sources hotter than boiling water on a cup (forget tea candles, lightbulbs, etc). 5) The adhesive of bottle label can be easily removed with oil of turpentine. It doesn't affect PET transparency at all. Good luck
I usually prefer to get only the concept in a short video BUT in your case I learnt more of engineering tricks that made every minute of the video worth watching.. شكرا :)
Congratulations on the concept, the engineering design and the construction, I like the fact that the power piston is very close to the displacement and so effectively the compression ration is a maximum relatively speaking which means one gets the maximum efficiency with a higher compression ration.( relative in this case) The idea of the phase displacement between the power piston and the displacement of 90 degrees is well projected and the fact that the engine reverses due to changing the heat sink to a cold sink is excellent as it can be followed visually, It is a great model to teach heat engines to students too, even at University Levlels, Congratulations once again as the workmanship is good enough for any one with a good attitude to make it, People these days do not know how to occupy their free time and all they want is to be entertained by others, This is a situation where people can learn about themselves, about their deeper thoughts and about their own clumsiness factor to get things synchronnised and accurate, Well done sir,
After two years I came back to this video and cannot help admire the little ingenuity behind this design. The fact that the displacement piston is placed in a transparent container one can clearly see the two actions that give it a double acting cycle, one when the air is on the hot side due to expansion and the other when the air goes to the cold side due to contraction. An elegant and such a beautiful design. One would indeed be wrong to say that this is a simple design, for it is not simple at all, it has got its dignity to keep up and in fact it is a rather complex cycle. I believe one hot air engine was introduced in a Swedish submarine and this pitted its wits against the American might and due to the silence of the Hot air engine propelling the submarine, it went through the American defence lines without being detected, all due to the fact that the Stirling Engine does not use "explosions" but an expansion is great silence. Again , congratulations.
Excellent ! Thanks especially for listing the required parts right up front. It’s annoying to have to put everything on hold because yet another part or tool has to be found. All the best to you.
Thanks myfordboy, I finally finished mine. I modified your design a bit to suit my resources. I was able to get it to run for over three hours off of the same cup of water and multiple ice packs! I was able to get the most out of it by frequently switching out my ice packs to new ones.
This is still my favorite Stirling engine video. I remember watching it the first time before I started collage. Never could find tins and a soda bottle to fit together.
a little tip for removing the adhesive from the labels on bottles and stuff, works with price tags that are stuck on really good too, spray a bit of fly spray on it, leave it for a couple minutes, then wipe it off with a cloth or paper towel, it comes right off
I personally find the videos too short, I hate it when they are over. Have watched them all many times and it never seems to be enough. Same for the lack of music, if I wanted music videos I'd turn on MTV.......... Keep up the good work!
I'm one of them, your videos are awesome just the way they are. People can skip through the video and listen to music in the background if that's what they want. Keep up the amazing work, it's rare to find a channel like this.
this sterling would make a great custom made teapot cap and will indicate that the tea is still hot:) Thanks for showing this simple yet very amusing build.
Are you joking, I'll bet NASA will find this a challenge. At minute 28:44 you mentioned it will take a bit of patience to coax it into place, OK that rules me out. I just had to watch this to completion, to see it work. Great video as are all your videos and projects. Thanks for sharing...Ken the old guy in USA.
Just built one successfully. it's quite hard to find tin lids that fit plastic bottle (USA, California). what I did was to use 2 tin lids and cut a 2 littre Coke bottle ring. Then I cut the ring down to fit the lids and glued the joint (with the same Coke plastic piece over the joint). Secure with a little epoxy. Thank you, my run time is 14 mins over a cup of near boiled water, can be longer if I pay more attention to bearing, leveling... My co-workers asked for one... (:
Just made one of these with lots of time put into it. I must have gone wrong somewhere but i gave it a shot. Did not work for me. I think my flywheel assembly might be the problem. Great upload though and good instructions.
That is slicker than eel snot. I'm thoroughly impressed with every aspect of it. Even how deft you are at making the parts and fitting them together. I wonder if I could maybe make one of these. I'll have to look at the plans, the crank assembly was a little small for me to see what you did. It's not you, I don't see so good. I'd love to have one of these because the principle and the fact that you can get usable work from it is just amazing. I'll have to modify the materials from UK to available American style goods. It would be a great conversation piece!
I save all my JIF jars, cleaning the labels off of them, I use a silicone spray for the major portion of the glue and rubbing alcohol for the final cleaning. Seems to work for me.
You don't want a night light under this one, it will melt the plastic diplacer cylinder. Have a look at my EZ Sirling if you want a higher speed. Black paint only useful if you are looking for solar power.
I love this design. There are no many tutorials for LTD. I built one but I have not exact material. I cannot find a bottle with the same size as a can. I used tuna can top and 1 liter plastic bottle. I joined them by epoxy. You can see it on my channel.
Well. I built my own, a small one. All the mechanics of it work but the cycle will not turn on its own. I made the displacer out of cardboard. I think it displaces to little warm air. So now I will make it half as thick as the heat chamber so that there is more of a heat difference in the chamber. BTW. would a 180 degree instead of a 90 degree angle also work for the 2 bends in the horizontal shaft?
+myfordboy I just found a piece of very light, but still thick (6mm) of packaging foam. Its gonna be my new displacer. Fortunatly I never throw anything away, I have had that little square piece for years, lol!
To think this engine was invented and built in 1816 ,200 years ago by a Scottish minister of the church, rev Robert Stirling who hailed from Ayrshire. So simple it's mind blowing.
Ford- progenitor of The Assembly Line. Thanks. The foam, lightweight part, best math possible (6 o' clock/9 o' clock: best precision and short explanation imaginable) and your movements communicate human. #1 Theory and interest Of course I speak in the name of The Paradigm Shif-. basic movements etc...and search for the Face of a Higher Power. Again. A human communication, better method, theory with most efficient numbers- #1.
Muy buen video , Didáctico, tiempo real ,y muy instructivo,.Realmente lo felicito ,he visto todos sus motores y se diferencian de otros que hacemos este hermoso hobby es la sencillez y la efectividad de todos ellos .......LO FELICITO
Greetings!! its really too precise work, i laughed lot during jokes you passed in between, appreciate your sense of humor, I will try this for my kids project now. Keep it up
For the assembly, if you put the tin in the freezer for a few minutes and the water bottle section in the nuclear oven for 3 to 5 seconds it slips together very easily the once all is the same temp it is a very tight fit without the chance of disturbing the rest of your assembly. Have fun
Did you just call a microwave a "nuclear oven"? A microwave oven is no more "nuclear" than a radio, mobile phone (cellphone), or a torch (flashlight)! Also, microwaving plastics is an incredibly bad idea as they can melt and distort. Hot water would be a thousand times smarter.
I like the design, now if I were only rich enough to waste my money on such common items so I could make it... [however I live in the US and never even heard of travel sweets, they sound yummy
it was just a suggestion.. and you can use relaxing music.. 37000 subsribers.. :) just joking.. i will replicate your project! thanks!! great job continue like these!
🔴 What Is Islam? ⚠️ 🔴 Islam is not just another religion. 🔵 It is the same message preached by Moses, Jesus and Abraham. 🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. 🔵 It reminds us that since God created us, no one should be worshipped except God alone. 🔴 It also teaches that God is nothing like a human being or like anything that we can imagine. 🌍 The concept of God is summarized in the Quran as: 📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)[4] 📚 🔴 Becoming a Muslim is not turning your back to Jesus. 🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
Rodrigo Drumond You could try the Pringle engine ua-cam.com/video/Ow_mBbd2jWU/v-deo.html Not LTD but designed for builders that cannot get suitable tins.
Hi Myfordboy, How did you fit the diaphragm crank onto the crankshaft firmly? I noticed it was glued onto the flywheel for the displacer crank, but im unsure about the diaphragm crank. Please help. Thank You!
Hi myfordboy , this LTD stirling engine , can it work on higher temperature differences ? or will it only work with low temperature differences ? example if i were to use an alcohol burner . thanks in advance !
+Yi Ming This design is optimised to run on very little heat. If you increase the heat the plastic cylinder and foam displacer will melt. If you want an engine to run on a spirit burner or candle try my EZ Stirling or Pringle engine.
This engine is a simplified version of this one ua-cam.com/video/hazK8kxd-uA/v-deo.html This engine needs a lathe and was not designed as an LTD but could easily be made into one. I can send plans if you send me an email address.
Speed is determined by the difference in temperature between top and bottom . To increase speed apply more heat to the bottom or cool the top, or both.
Vậy thử đặt động cơ đã chế tạo đó vào lòng bàn tay thế nó có hoạt động không? Mà ngày nay cách ngày chế tạo động cơ đó tới tận 9 năm vậy nó còn hoạt động nữa được không
No as the displacer relies on gravity to return it. It would however work as a solar engine if the top metal plate was painted black and the bottom one kept cooler. It does not matter which side is hot as long as there a temperature difference between top and and bottom.
+boowonder888 The larger piston let's the air past it and only works as an insulator. When it is up the air is heated by the heat source and expands. That pushes the smaller piston up. When the large piston comes down, it covers the air from the heat source and let's it cool and contract again. That pulls the smaller piston back down.
Thank you for sending the plans. Being in the states, I cannot find the sweets tins, I have fins similar tins but of course they do not fit inside our 2 liter bottles. In your description, you mention alternate construction methods, but i can't seem to find them. I know that i am just overlooking them, but could you help?
There are no specific instructions for alternative materials for this engine but only suggestions. If you can find some tin lids close the specified size then they can be connected with a rolled up card board tube like the one shown on my Pringle engine video. You will of course loose the visual treat of seeing the displacer rise and fall but the engine will work the same. The diameter of the displacer will need altering to suit the the lid but everything else can be the same.
myfordboy We are desperately trying to keep the cylinder clear so I will keep searching and tinkering. If I could find something close I could add a rim of epoxy putty to seal the metal ends, but so far the differences in diameter have been too large. Would the height of the cylinder make a huge difference? I have found these www.papermart.com/round-clear-pvc-sided-tin-cans/id=22314?SearchItemNumber=6501043P#6501043P but they are about 76 mm in height. I am assuming that the temperature differential would increase because of the amount of air to heat/cool would increase. Right? This is a project i am doing with my son, so we are learning as we go. Thanks again!
jojoringer Those containers are too tall for an LTD engine. It may be possible to remove the bottom and refix it after shortening the tube but you would need to see one first. Here are some suggestions; A bird feeder could provide a plastic tube, not sure what size are available. Attach metal lids, which could be larger than the tube, with silicone sealer. Have a look in a store for plastic bottles or tumblers of suitable size. If you have a tin lid slightly larger than the 2lt bottle the difference could be made up by using a strip of card epoxied to the lid..Don't overlap the joint as it would not be airtight but make it up from several strips with a butt joint like the one shown on my Pringle engine.
I see, the other crankshaft is pushing it down again. So The Sterling always has 2 shafts, one for the upstroke and one for the downstroke? Logic suggests as long as the hot air keeps raising the piston, the 2nd shaft has to push the foam down again. I am beginning to understand.
+boowonder888 The principle of the Hot Air or Stirling Cycle engine is not well known. It is difficult to see how it can work just by applying heat. If we take an empty can and stretch a piece of balloon over the top, like the diaphragm on our engine, the air is sealed inside. Apply heat to the bottom of the can and the pressure inside the can will rise and cause the balloon to rise a little. Now if the bottom of the can is cooled by placing it in a dish of water, the air inside will cool and the pressure will fall. The balloon will be sucked inwards. So to get our diaphragm, which is a simple form of piston, to drive our engine all we have to do is alternately heat and cool the can. This is not very practical but the same effect can be achieved by heating one end of the cylinder, the bottom, and the moving the air inside alternately from top to bottom. This is the function of the displacer. The displacer takes up space inside the cylinder, when it’s at the top, all the air inside is displaced to the bottom where it is heated and expands. When the displacer is at the bottom of its stroke, the air is moved to the top, which has a cooler surface, and it contracts. Remember, the displacer does not touch the sides of the cylinder. It is not a piston. As it rises and falls air passes around it as it is transferred from top to bottom. It’s the same air that is continually heated and cooled. For the engine to work the top has to be cooler than the bottom. The larger the temperature difference we can get, the more powerful the engine will be. The configuration of the cranks and connecting rods allow the displacer to move in the correct relationship to the diaphragm and flywheel. When you have your finished engine in front of you, it will be easier to understand the principle.
Thanks for your great explanation! I see now that I didnt get many thing about the principle. I will try to build on myself now for sure, it is very interesting. Pushing the hot air to the top so it can cool off again, thats real nifty! The smaller the diaphragm the bigger the vertical stroke ,probably.. By the way, I have a tip your you too: If you need cool looking steal push rods, just take apart your old umbrella! They come with holes and all.
If the top is heated the engine runs in the other direction. It may work on solar, I haven't tried it. You will need a temperature difference between top and bottom of about 90 deg C. If the engine were stood in cold water it would help. Paint the top black and let us know how it goes.
Thanks for this wonderful and precisely detailed video! One small tip: The difficult process of coaxing the plastic bottle piece around the two tight-fitting lids should become very easy if you just freeze the lids first. They will only shrink a tiny bit during the freeze, but it should be plenty, and as they warm back up, they'll snug into place.
Thank Myfordboy for this nice video.
I have just built this awesome device and it works like a charm. I followed the indications from the video and measures in the plan as close as I could. It took me three days (most of the time awaiting for the glue to set). Some tips that could help others to success (many have already been commented here):
1) Do not use a balloon for the diaphragm (as I firstly did) since it is too stiff. A latex glove is the best choice.
2) I have found that, at local markets, the circumfererence of different 2 litre PET water/soda bottles varies from 30 to 33 cm. The travel sweet tins have around 31 cm so finding a bottle that fits properly was not that easy. If difference doesn't exceed a few millimiters, electrical tape can be added around the tins to get a perfect sealing.
3) Everything should run very very freely. Make sure there is no friction in the wheel and/or in the displacer needles.
4) PET deforms with high temperatures so I would not use heat sources hotter than boiling water on a cup (forget tea candles, lightbulbs, etc).
5) The adhesive of bottle label can be easily removed with oil of turpentine. It doesn't affect PET transparency at all.
Good luck
I rarely sit through 30+ mins of anything on youtube (unless there is an injury involved), but this was brilliant. Good job.
I usually prefer to get only the concept in a short video BUT in your case I learnt more of engineering tricks that made every minute of the video worth watching.. شكرا :)
10:03 You are the lord of the rings
Congratulations on the concept, the engineering design and the construction, I like the fact that the power piston is very close to the displacement and so effectively the compression ration is a maximum relatively speaking which means one gets the maximum efficiency with a higher compression ration.( relative in this case) The idea of the phase displacement between the power piston and the displacement of 90 degrees is well projected and the fact that the engine reverses due to changing the heat sink to a cold sink is excellent as it can be followed visually, It is a great model to teach heat engines to students too, even at University Levlels, Congratulations once again as the workmanship is good enough for any one with a good attitude to make it, People these days do not know how to occupy their free time and all they want is to be entertained by others, This is a situation where people can learn about themselves, about their deeper thoughts and about their own clumsiness factor to get things synchronnised and accurate, Well done sir,
After two years I came back to this video and cannot help admire the little ingenuity behind this design. The fact that the displacement piston is placed in a transparent container one can clearly see the two actions that give it a double acting cycle, one when the air is on the hot side due to expansion and the other when the air goes to the cold side due to contraction. An elegant and such a beautiful design. One would indeed be wrong to say that this is a simple design, for it is not simple at all, it has got its dignity to keep up and in fact it is a rather complex cycle. I believe one hot air engine was introduced in a Swedish submarine and this pitted its wits against the American might and due to the silence of the Hot air engine propelling the submarine, it went through the American defence lines without being detected, all due to the fact that the Stirling Engine does not use "explosions" but an expansion is great silence. Again , congratulations.
@@carmelpule6954 why write an essay when you could have just said those points in few sentences. Man you must have a lot of free time lmao
Excellent ! Thanks especially for listing the required parts right up front. It’s annoying to have to put everything on hold because yet another part or tool has to be found. All the best to you.
Thanks myfordboy, I finally finished mine. I modified your design a bit to suit my resources. I was able to get it to run for over three hours off of the same cup of water and multiple ice packs! I was able to get the most out of it by frequently switching out my ice packs to new ones.
datonekid Well done, your engine runs well.
Check them out my channel if you have the time!
This is still my favorite Stirling engine video. I remember watching it the first time before I started collage. Never could find tins and a soda bottle to fit together.
This is by far the best instructional video I've ever seen for building a Stirling engine. Great work!
a little tip for removing the adhesive from the labels on bottles and stuff, works with price tags that are stuck on really good too, spray a bit of fly spray on it, leave it for a couple minutes, then wipe it off with a cloth or paper towel, it comes right off
I personally find the videos too short, I hate it when they are over. Have watched them all many times and it never seems to be enough. Same for the lack of music, if I wanted music videos I'd turn on MTV.......... Keep up the good work!
Stirling engines are a great hobby! I love tinkering with them.
I'm one of them, your videos are awesome just the way they are. People can skip through the video and listen to music in the background if that's what they want. Keep up the amazing work, it's rare to find a channel like this.
this sterling would make a great custom made teapot cap and will indicate that the tea is still hot:) Thanks for showing this simple yet very amusing build.
You are first people, who showing how I'm going to do it.
The most handsome sterling engine - from materials to color - !!! Science and Art blend.
The speed you eat the sweets in no way effects how the engine performs!
good joke :)
Brilliant video, I especially love the soldering iron trick.
Very well done, loved the little tricks also.
However! I mean, come off it buddy
Even Liberace called them Popsicle sticks.
Hi
Easy, simple, brilliant and excellent..!
It is the best I've seen..!
Thank you so much.
Are you joking, I'll bet NASA will find this a challenge. At minute 28:44 you mentioned it will take a bit of patience to coax it into place, OK that rules me out. I just had to watch this to completion, to see it work. Great video as are all your videos and projects. Thanks for sharing...Ken the old guy in USA.
I'm trying to make a sterling engine and this is the best video yet
That's a pretty cool way of making a tiny drill!
Tin lids, water bottle, and similar scrap bits. So much for all the stuff about how hard it is to get an LTD Stirling to run.
Nice video cant wait to try it one small tip use latex gloves so your fingers wont get souled .
This sould be usefull in a place where you have natural hot water right? Like a hot spring?
Or ice.
that's a great trick with the soldering iron to cut polystyrene foam
Just built one successfully. it's quite hard to find tin lids that fit plastic bottle (USA, California). what I did was to use 2 tin lids and cut a 2 littre Coke bottle ring. Then I cut the ring down to fit the lids and glued the joint (with the same Coke plastic piece over the joint). Secure with a little epoxy. Thank you, my run time is 14 mins over a cup of near boiled water, can be longer if I pay more attention to bearing, leveling... My co-workers asked for one... (:
Great solution.
I have several engines with that configuration, all run well.
Just made one of these with lots of time put into it. I must have gone wrong somewhere but i gave it a shot. Did not work for me. I think my flywheel assembly might be the problem. Great upload though and good instructions.
Congratulations on this detailed video.
I also really like these engines.
Greetings from Brazil,
Leandro Wagner.
That is slicker than eel snot. I'm thoroughly impressed with every aspect of it. Even how deft you are at making the parts and fitting them together. I wonder if I could maybe make one of these. I'll have to look at the plans, the crank assembly was a little small for me to see what you did. It's not you, I don't see so good. I'd love to have one of these because the principle and the fact that you can get usable work from it is just amazing. I'll have to modify the materials from UK to available American style goods. It would be a great conversation piece!
+Robert Smith Send me an email for a free plan.
Very good with sunlight, lenses and mirrors could make a move for one dynamo and feed electric appliances.
A small scale one like this (or maybe a bit bigger) would be great if you had to trickle charge something in the middle of nowhere ❤
Great plans and video. Here is my result: My First Stirling Engine (LTD)
How about building an opposed piston engine?
ECOmotors has one, supposed to be 50% efficient, 50% lighter.
Very cool project!!
What do you think?
Very nice Thanks for sharing.
I save all my JIF jars, cleaning the labels off of them, I use a silicone spray for the major portion of the glue and rubbing alcohol for the final cleaning. Seems to work for me.
You don't want a night light under this one, it will melt the plastic diplacer cylinder. Have a look at my EZ Sirling if you want a higher speed. Black paint only useful if you are looking for solar power.
Great project, I hope you have some school teachers as subs. This would be a great school project. Nice job.
I love this design. There are no many tutorials for LTD. I built one but I have not exact material. I cannot find a bottle with the same size as a can. I used tuna can top and 1 liter plastic bottle. I joined them by epoxy. You can see it on my channel.
+Powered by Sergey You can water bottle cut and paste with glue, anti-heat
+toube TV thanks
Powered by Sergey You are welcome I am in the service (Arabic and proud)
Well. I built my own, a small one. All the mechanics of it work but the cycle will not turn on its own. I made the displacer out of cardboard. I think it displaces to little warm air. So now I will make it half as thick as the heat chamber so that there is more of a heat difference in the chamber.
BTW. would a 180 degree instead of a 90 degree angle also work for the 2 bends in the horizontal shaft?
+boowonder888 A cardboard displacer will be too heavy for this engine. The cranks are always 90 deg on a Stirling engine.
+myfordboy I just found a piece of very light, but still thick (6mm) of packaging foam. Its gonna be my new displacer. Fortunatly I never throw anything away, I have had that little square piece for years, lol!
I love His background with corrugated cartboard
To think this engine was invented and built in 1816 ,200 years ago by a Scottish minister of the church, rev Robert Stirling who hailed from Ayrshire. So simple it's mind blowing.
Everything's simple when gods on your side helping you :)
Excelente, de los mejores que he visto.
Excellent video! Everything is clearly explained.
Ford- progenitor of The Assembly Line. Thanks. The foam, lightweight part, best math possible (6 o' clock/9 o' clock: best precision and short explanation imaginable) and your movements communicate human. #1 Theory and interest
Of course I speak in the name of The Paradigm Shif-. basic movements etc...and search for the Face of a Higher Power. Again. A human communication, better method, theory with most efficient numbers- #1.
Muy buen video , Didáctico, tiempo real ,y muy instructivo,.Realmente lo felicito ,he visto todos sus motores y se diferencian de otros que hacemos este hermoso hobby es la sencillez y la efectividad de todos ellos .......LO FELICITO
Greetings!! its really too precise work, i laughed lot during jokes you passed in between, appreciate your sense of humor, I will try this for my kids project now. Keep it up
For the assembly, if you put the tin in the freezer for a few minutes and the water bottle section in the nuclear oven for 3 to 5 seconds it slips together very easily the once all is the same temp it is a very tight fit without the chance of disturbing the rest of your assembly. Have fun
Did you just call a microwave a "nuclear oven"? A microwave oven is no more "nuclear" than a radio, mobile phone (cellphone), or a torch (flashlight)! Also, microwaving plastics is an incredibly bad idea as they can melt and distort. Hot water would be a thousand times smarter.
love this for my son school project , specially the HAVE A DRINK part....
I like the design, now if I were only rich enough to waste my money on such common items so I could make it... [however I live in the US and never even heard of travel sweets, they sound yummy
thank you for video it's so simple for my project for school
It may not the improbability drive, but still uses a fresh cup of tea.
Bravo,Veramente,Paziente e Preciso.Complimenti.
Very interesting project. Love your videos, just as they are. Music or talking would mess them up.
it was just a suggestion.. and you can use relaxing music.. 37000 subsribers.. :) just joking.. i will replicate your project! thanks!! great job continue like these!
Rulof Fai da Te hi I watch your other Channel
🔴 What Is Islam? ⚠️
🔴 Islam is not just another religion.
🔵 It is the same message preached by Moses, Jesus and Abraham.
🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God.
🔵 It reminds us that since God created us, no one should be worshipped except God alone.
🔴 It also teaches that God is nothing like a human being or like anything that we can imagine.
🌍 The concept of God is summarized in the Quran as:
📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)[4] 📚
🔴 Becoming a Muslim is not turning your back to Jesus.
🔵 Rather it’s going back to the original teachings of Jesus and obeying him.
I have a quich question. Does the displacer have to be airtight to the cylinder, or does it just have to semi-sealed?
The displacer does not touch the sides of the cylinder. It needs a gap of 2 or 3mm all around.
@@myfordboy thank you
The perpetual motion engine.
That requires an energy source to actually work.
I think they already invented that.
But it does look like a fun project
i believe thats why he called it a "stirling engine" in the title. I will be making one, learn alot from it
What is min temp difference and how much temperature should be there while heating
Great craftsmanship.
Very doctor Suess ,I love it thanks for the share
I made the coke can version but you need a lot of heat so I'm looking forward to making this one
Pls myfordboy i love yours projects but do you know anything that can replace the two tins of travel sweets? Thankyou
Rodrigo Drumond You could try the Pringle engine ua-cam.com/video/Ow_mBbd2jWU/v-deo.html
Not LTD but designed for builders that cannot get suitable tins.
Impressive Sir...Cheers
Excellent video and tutorial!!!! These engines are easy to build and a great way of adding additional teaching to my class! Well done!
Aman
Hi Myfordboy, How did you fit the diaphragm crank onto the crankshaft firmly? I noticed it was glued onto the flywheel for the displacer crank, but im unsure about the diaphragm crank. Please help. Thank You!
Its clearly shown on my free plans, just ask for a copy.
Very Cool, My kind "constructed from stuff found around the house" build.
Very Cool! Can't wait for the plans
how hot will the engine get Would hot glue melt in the chamber???
+Mitchell Green It's less hot than boiling water. Not sure what temp the glue melts but i would not use it on the model.
Hi myfordboy , this LTD stirling engine , can it work on higher temperature differences ? or will it only work with low temperature differences ? example if i were to use an alcohol burner . thanks in advance !
+Yi Ming This design is optimised to run on very little heat. If you increase the heat the plastic cylinder and foam displacer will melt. If you want an engine to run on a spirit burner or candle try my EZ Stirling or Pringle engine.
How much space is there between the displacer and the clear wall of the engine?
About 3mm. Send me your email and you can have a plan.
Will you ever make a version of this for lathe users? It would be a nice entry to Stirling engines.
This engine is a simplified version of this one ua-cam.com/video/hazK8kxd-uA/v-deo.html This engine needs a lathe and was not designed as an LTD but could easily be made into one. I can send plans if you send me an email address.
well this things charming as hell. gonna need to make me one of these
very practical the way you did
looks great! i've built your other design a while ago and it ran like hell! maybe it's time for the next
plz answer: if the temperature of the hot water is higher, then does the sterling engine spin faster?????
Speed is determined by the difference in temperature between top and bottom . To increase speed apply more heat to the bottom or cool the top, or both.
thank you so much!
Awesome video but where in the world do you get those candy tins? I can't find them anywhere!
The lighter the displacer piston the better LTD ?
Lighter displacer means the engine has to use less power to move it.
can we use candle fire instead of hot water
Not for this engine as the heat will melt the plastic cylinder. Try my EZ Stirling or Pringle engine for candle power.
Wait , could you use one of the sweets box for the “body” instead of the plastic?
My EZ Stirling design does that.
For a low temperature engine you need to thermally insulate top and bottom surfaces.
@@myfordboy oh ok thanks
so interested. how many watts the bulb that you use?
+chandra m The one in the lamp is 60 watts
thế biết rằng trong tủ lạnh ngăn đá có lạnh. vậy bạn thử cho động cơ đốt ngoài mà bạn làm vào trong ngăn đá, vậy nó có quay không?
For this type of engine one end needs to be at a different temperature to the other so putting it in a freezer would not work.
brasso will take label glue off real easy!! Old One Legged Joseph T
how do you make it more air tight?
Eso sí que está muy bueno felicitaciones y saludos.
Vậy thử đặt động cơ đã chế tạo đó vào lòng bàn tay thế nó có hoạt động không? Mà ngày nay cách ngày chế tạo động cơ đó tới tận 9 năm vậy nó còn hoạt động nữa được không
No not enough temperature difference.
Thế nếu như cái piston nguội bằng cao su sau khi hoạt động lâu dài thế có cần thay mới không ạ
The diaphragm should last a long time but it's easily replaced.
Và đây là lần đầu tiên tôi nói chuyện với người nước ngoài
this is great! helped me a lot in my physics project thank you
As I watch this I can't help but be reminded about "Hands".
innovatively inspiring
Will it work upside down? For solar?
No as the displacer relies on gravity to return it. It would however work as a solar engine if the top metal plate was painted black and the bottom one kept cooler. It does not matter which side is hot as long as there a temperature difference between top and and bottom.
It looks easy after you figured it out for us :)
Thanks sir, I looked a video to help my project.
Im gonna build this once I get the chance to get materials
why does the piston fall down again. Shoudnt it stay up and stop the flywheel?
+boowonder888 The larger piston let's the air past it and only works as an insulator. When it is up the air is heated by the heat source and expands. That pushes the smaller piston up. When the large piston comes down, it covers the air from the heat source and let's it cool and contract again. That pulls the smaller piston back down.
Thank you for sending the plans. Being in the states, I cannot find the sweets tins, I have fins similar tins but of course they do not fit inside our 2 liter bottles. In your description, you mention alternate construction methods, but i can't seem to find them. I know that i am just overlooking them, but could you help?
There are no specific instructions for alternative materials for this engine but only suggestions.
If you can find some tin lids close the specified size then they can be connected with a rolled up card board tube like the one shown on my Pringle engine video. You will of course loose the visual treat of seeing the displacer rise and fall but the engine will work the same. The diameter of the displacer will need altering to suit the the lid but everything else can be the same.
myfordboy We are desperately trying to keep the cylinder clear so I will keep searching and tinkering. If I could find something close I could add a rim of epoxy putty to seal the metal ends, but so far the differences in diameter have been too large. Would the height of the cylinder make a huge difference? I have found these
www.papermart.com/round-clear-pvc-sided-tin-cans/id=22314?SearchItemNumber=6501043P#6501043P
but they are about 76 mm in height. I am assuming that the temperature differential would increase because of the amount of air to heat/cool would increase. Right? This is a project i am doing with my son, so we are learning as we go.
Thanks again!
jojoringer Those containers are too tall for an LTD engine. It may be possible to remove the bottom and refix it after shortening the tube but you would need to see one first.
Here are some suggestions;
A bird feeder could provide a plastic tube, not sure what size are available. Attach metal lids, which could be larger than the tube, with silicone sealer.
Have a look in a store for plastic bottles or tumblers of suitable size.
If you have a tin lid slightly larger than the 2lt bottle the difference could be made up by using a strip of card epoxied to the lid..Don't overlap the joint as it would not be airtight but make it up from several strips with a butt joint like the one shown on my Pringle engine.
myfordboy
I think I have it figured out. Not quite as simple as having off the shelf products fit together but I think it should work. Thanks!
I see, the other crankshaft is pushing it down again. So The Sterling always has 2 shafts, one for the upstroke and one for the downstroke? Logic suggests as long as the hot air keeps raising the piston, the 2nd shaft has to push the foam down again.
I am beginning to understand.
+boowonder888 The principle of the Hot Air or Stirling Cycle engine is not well known. It is difficult to see how it can work just by applying heat.
If we take an empty can and stretch a piece of balloon over the top, like the diaphragm on our engine, the air is sealed inside.
Apply heat to the bottom of the can and the pressure inside the can will rise and cause the balloon to rise a little.
Now if the bottom of the can is cooled by placing it in a dish of water, the air inside will cool and the pressure will fall. The balloon will be sucked inwards.
So to get our diaphragm, which is a simple form of piston, to drive our engine all we have to do is alternately heat and cool the can.
This is not very practical but the same effect can be achieved by heating one end of the cylinder, the bottom, and the moving the air inside alternately from top to bottom. This is the function of the displacer.
The displacer takes up space inside the cylinder, when it’s at the top, all the air inside is displaced to the bottom where it is heated and expands.
When the displacer is at the bottom of its stroke, the air is moved to the top, which has a cooler surface, and it contracts.
Remember, the displacer does not touch the sides of the cylinder. It is not a piston. As it rises and falls air passes around it as it is transferred from top to bottom. It’s the same air that is continually heated and cooled.
For the engine to work the top has to be cooler than the bottom.
The larger the temperature difference we can get, the more powerful the engine will be.
The configuration of the cranks and connecting rods allow the displacer to move in the correct relationship to the diaphragm and flywheel.
When you have your finished engine in front of you, it will be easier to understand the principle.
Thanks for your great explanation! I see now that I didnt get many thing about the principle.
I will try to build on myself now for sure, it is very interesting. Pushing the hot air to the top so it can cool off again, thats real nifty! The smaller the diaphragm the bigger the vertical stroke ,probably..
By the way, I have a tip your you too:
If you need cool looking steal push rods, just take apart your old umbrella! They come with holes and all.
Stick to your formula, myfordboy; I love your videos!!!!
Can make horixontal sterling working hydrolic selenoid back in 1907
cool spezial effectss :D
i like landscapemovies *-*
Would it work if it was heated from upper side? Because I'm planning to make a solar-powered one.
If the top is heated the engine runs in the other direction. It may work on solar, I haven't tried it. You will need a temperature difference between top and bottom of about 90 deg C. If the engine were stood in cold water it would help. Paint the top black and let us know how it goes.
myfordboy 90 deg? That's a lot actually... But I'll try and let you know how it works. Thanks for the help.
It's only a guess.The boiling water is at 100 deg of course but the room temperature could be 20 deg.so that would be 80 deg difference.
15:51 are a fan?????
20:46 Ohhhh. The eye of the minion¡¡¡¡¡¡¡¡