Homemade Twin Walking Beam Stirling Engine
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- Опубликовано: 17 ноя 2024
- Hi . This is a twin cylinder twin walking beam Stirling engine that i made after watching some other diy Stirling builds , I didn't follow any plans ,just got stuck right in to the build & played it by ear . The most difficult part was getting the fulcrum point right for the walking beams .The displacer cylinders are made from large aerosol cans and the displacer pistons are made from oasis foam as used in flower arranging as it is very light and heat resistant . The base fire box & upper water jackets are cat food cans and tinned fruit cans .The power cylinders are copper pipe with JB WELD pistons , I first assembled the displacer cylinder assembly and temporarily fitted the power cylinder on with blue tac ,i then applied heat to base of displacer to measure how far the power piston moves in the cylinder when the displacer is raised and lowered , this measurement gave me stroke of the power piston and the fixing point on the flywheel crank arms for the power piston con rods , when making the power cylinders make them long enough so that they can be cut to the correct length after the stroke length is determined in the previous heat up test . When building an engine all moving parts must move with no resistance and there should be very little too no air escaping from inside the cylinders .Also the displacer pistons should have enough clearance between the piston & cylinder to allow the air to pass freely from hot too cold end . If you make a hollow displacer piston from a smaller can it must be sealed perfectly around the connecting rod and any other joint so that air pressure from inside the cylinder does not enter the displacer piston can , as this will affect performance . If you use a hollow displacer piston be aware that too much heat could cause the displacer piston to pop or distort due to the air inside expanding .The flywheel can also affect running , if its to small or light , the engine will run in a rough jerking motion between the air expanding & contracting , a heavier flywheel will smooth out this motion . Hope this information helps with any builds you may undertake . Hope you like what i've done so far , It was made in the evenings in my living room with no special tools so if i can do it any one can , just give it a go . Thanks for viewing.Gary
I have to say I only recently got into building these engines, but i've spent quite a lot of time looking at them online and yours is by far one of the best looking - and smoothest running- i've ever seen. Props.
After 7 years it's still the best looking for sure
Definitely one of the nicest Stirling engines made from common parts.
best part of this video it that the guy actually talked . I've watching videos all night . And while they had nice ideas, they were mostly silent videos. like they are scared to talk with a camera going .... nice job Gary
Not only do I like it, I came back three years later to watch it again.
Thank you very much Martin .
This is pretty sweet, Gary. I could watch that thing for hours.
DIYers take note!
you can get ready made steel push rods from your old umbrella.
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@@boowonder888 🔵THE MEANING OF LIFE "SPOKEN WORD"🎬👇🏼
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As I've commented on one of your other engines,this is a great example of a fine engine built with low budget materials but high on innovation and creativity. Lovely job.
My friend, this is impressively simple yet clean in the most efficient way a home tinkerer could accomplish - brilliant! Thanks for the inspiration!
like an early gasoline engine ...imagine the stirling refined and improved like today's gasoline / petrol engines ..i would bet a really strong one could run a generator charging battery banks for household electicity ..gary's craftsmanship is excellent...
Wow, great looking little Stirling Gary. You make it sound easy. Thanks for sharing.
+Cam Dee . Thanks Cam .
Nice little sterling engine. They're pretty tricky to make, so it's impressive you pulled it off without any plans.
Cheers mate . as you said ,they can be a bit tricky . But when it does run for the first time its a great feeling knowing that you built it yourself. I now have another video of my latest build - my Watts Stirling engine .
I'll have to check that out! I've never actually built one of these, myself.
Gary this is a great little engine. smooth, quiet and well thought out. kudos.
Nice job. I like the contrast of the flat black cylinders against the copper cylinder and exhaust pipes. Two cylinders also seems a little more esthetically pleasing than one to watch.
love the twin aspect of your engine. I made a single cylinder stirling that runs, but it was from plans so that all the dimensions were already worked out. My hat is off to you----superb job. I am encouraged to try one myself. The twin is so much more interesting to watch than the single. Keep up the good work!
Thank you Mike . I must admit that when its running it can be quite mesmerizing watching all that is in motion . Go on mate , have a go at building one and wishing you good luck if you do .
A very good arrangement for the Stirling walking beam engine. The workmanship is excellent seen by the compression in the system, not much losses in those seals. This could be made into a museum piece through adding some artistic polished columns and mahogany flywheel with some curvy spokes.
Personally , I am not too keen in the manner I finish the engine and its artistic contents as I care more for the excellence in engineering, but life is what it is and to attract the general public one needs to embellish an engine. If the beams were operating about the horizontal it would look more elegant . Full marks for the craftsmanship and performance of the engine. Excellent in every manner. I have to try the copper cylinder with a cast JB weld, it looks quite efficient.
Very nice looking engine :-) I like the polished copper on flat black scheme.
Very nice work, very well balanced and quiet. Well done.
beam engine, more like bean engine, really cool how you repurposed the cans
Very good that your new engine configuration. Congratulations.
Greetings from Brazil,
Leandro Wagner.
Very nice model, looks like it runs nice and smooth, I love these things I have two on display in my living room and I run them most days for a short time, shame about the noise they make or I would have them on all day, Cheers, Pete
Wow runs smooth,,,,excellent job
Great love this concept. Maybe very easy to make in a four cylinder, six cylinder or even eight cylinder. Love this concept Thanks for sharing
Very nice, and thank you for sharing your design. I've purchased a small machine from China. They are simple, but surprisingly captivating. I also like your black&copper scheme.
It's lovely. I would use it to replace the TV!
very cool & elegant little engine, a pleasure to see operate, i bet you had fun building & operating it.
Very elegant pure brittish styled machine
An absolutely beautiful machine.
Beautiful lighting!
Brilliant engine. thanks for the share. gonna build me one of those
I'm making one right now! half way there, Search "Walking beam stirling engine test 1" on youtube it's the first one. Pretty excited, thank you Gary :)
Excellent job. The goal in my mind is how to make a practical heat engine that will run off the temperatures that I can develop with a solar hot water system that is cheap enough and small enough and home made. It would mean that I could effectively have solar power 24 hours per day. Keep going enthusiasts.
Gary, brilliant stirling. Could you be bothered to give a parts list that includes measurements. I would love to build this but I could use a little more information. I appreciate all the hard work you have put into this beauty.
Beautiful. Great job sir.
Magnificent construction!
Fajna maszyna. Dobra robota
Beautiful. Outstanding job. Thank you for sharing.
Very nice my friend! I'm thinking about building a sterling, not sure which design yet. Keep up the good work!
Beautiful build, great job and thanks for sharing
ive been looking for a engine to try and make, and im genna try this one, it looks simple enought
+RotoDotGif Good luck with your engine build , hope all goes well.
Gary Knight thanks
Nice work. Congratulations!
Please make one using acoustic or magnetic Heat or electric coils, I like to know how juice you can ramp up.
Have you considered putting a load on it? It might be strong enough to spin a small motor and produce enough electricity to light up a lightbulb. It would be a fun party trick.
Great engine, sounds very smooth,
Cheers yer star, Brigs :)
I like this one. Nice work 👍👍
hi Gary love your stirling engine by far the best I have viewed so far apart from your twin beam , could you please tell me the dia of your flywheel many thanks PC
Thats nice.
I would like that.
That is excellent work, thanks for posting this, it's inspiring!
Nice job mate.
Можно многократно увеличить мощность стирлинга. По капле пееред моментом нагревания легкоиспаряющей жидкости. Пропускать через полноценный радиатор и еще миниатюрный компресор дозатор. Система будет сложнее, но мощность все перекроет. Герметичность еще высокая нужна.
That's awesome good job man!
Very very nice, my friend!!! Grande abraço, Rio de Janeiro, Brasil!!☺☺☺☺
Very pretty, Guv
Would you please shoot an explanation video of how you made it, parts, assemble?
very nice work !
SALUTE BRO AMAZING 👏
Have looked at a lot of Stirlings on here, and many are finely engineered and quite beautiful.... but this is by far the one that has really grabbed me.... Simple, elegant and beautifully made in the DIY fashion.... I'm going to aim to make one just like it.... "aim" being the operative word, of course.
Well done old son.... {:o)
slurryoffagrape Hi Mate , thanks for the kind words. You should give it a go , they are quite simple to build and run well as long as you ensure that the cylinders do not leak air and that all moving parts move freely with as little resistance as possible . I was totally amazed when my first engine fired into life on the first try , i was sure it would never work . Good luck on your build and please show it when done . : )
Willdo.... Thanks for the encouragement. :)
hey gary .......really amazed by your project .i was wondering if you can give me the pictures or snapshots of the disassembled components that make up the engine,and also the details on construction of each part...it would be very grateful of you
Very nice. Good job
Greetings form New Mexico
I would buy plans for this lovely device were you to offer!
pierre
Are you scottish? That's a nice machine, well done! I think I try a similar thing. I also want to use cans and simple materials, and this is a great inspiration!
Great work.
Very nicely done!!
Genial una configuración distinta y funciona muy bien, un sonido agradable y suave... saludos...
Wonderful. Briliant
I'm obsessed with the Stirling engine lately.
This one is great! Well done and thanks for uploading, very smooth.
I like the idea of copper, you can solder it, its easy-ish to get small scraps, but the insert for your power piston? What are you using?
I would leave it without oil I like the sound , You've done an awesome job of it if your going to do something do it well two thumbs up thanks
Hello, do you have any drawings of this design?
From what and how you did the cylinders inside?
I love this engine !!
Did you have to seal the push rod for the displacer cylinder at the top of the can? Any chance you could do a video explaining your design of the displacer cylider? Great running machines. Thanks for sharing.
Hi dizzle , Thanks for viewing & comments :) I do not use a seal on the displacer connecting rod . The rod is moving through a length of brass tube which has very little clearance , when lubricated with a small drop of thin oil it makes an air tight smooth moving joint . On my last engine i bought 2 lengths of brass tube for the rod and guide sleeve from a hobby shop , they come in metric or imperial sizes . As the tubes increase in diameter they fit perfectly inside each other ( a smooth sliding fit if not bent ) Hope this makes sense and helps .
Thank you sir. I did a little shopping and came up with something similar to what you described.
She's a beaut
Well done!
Hi, Gary Knight would you be able to post a tutorial video on how you made your Stirling engine? It would be much appreciated! By the way your Stirling engine is awesome!
Thanks Kenneth , I'm not sure if or when i'll be able to make a tutorial as there is a lot going on at the present which is filling my time .
Awesome job man!
this is so nice and quiet. thank for sharing. jb weld piston?
Hows the power from this thing? Have you tried connecting a bike dynamo for electricity?
Nicely done. :)
Impressive, good for you!
Wow! That is one of the prettiest and best running tin can engines I've seen. How does the horizontal piston work? Does the displacer piston move from below it to above it?
Hi Dan , when the displacer piston is in its upper position the port to the power cylinder is just above the lower edge of the displacer piston & in its lower position the port is open & above the displacer piston . I dont know if this is the best position for the port but it works well for this engine.
Gary Knight Thank you, Sir. I'm gathering the stuff to make one. It will be based on your design. I can't wait.
good luck dan , hope to see it when its done . cheers.
really nice machine and useful diy tips, thanks a lot. I'm thinking of making a stove top fan. The top plate on my stove is naturally ventilated and probably doesn't get far beyond 100 C. Never thought of oasis foam, any idea what temp it can support? I've tried moulding a piston in alu tube a few times and failed, so now thinking of bellows.
+Ray Kent Hi Ray , sorry not replied sooner , i had not viewed comments in a while . I do not know what temperatures the oasis foam can withstand , all i know is that i tried to set it alight with a butane soldering torch and it just scorched so i assumed it would work ok in the engine . I haven't taken the engine apart to check but it is still working fine : ) . Good luck with your engine , hope it works well for you . Gary.
Outstanding engine,,, I should hope your delighted with it,,, she's brilliant and runs beautifully, lovely finish great right up and description, Can I ask what J B weld is (never come across it) is it a type of epoxy or 2 part resin. I have been wondering if I could convert my beam engine to a hot air engine instead of running it on the exhaust from a vacuum cleaner.
Hi Alan , jb weld is a 2 tube epoxy resin & hardener , also called liquid steel , if you do a search for jb weld it will show it , i bought mine from ebay . Also many thanks to you and all others who have viewed & commented .
***** Just been viewing your engine and i must say that i'm very impressed, you have great skill in producing high quality parts from mdf etc and the finish looks just like a cast item . cant wait to see the finished engine . Cheers mate.
Gary Knight Ya im quite pleased with her, the flywheel and beam don't look bad,,, the cylinder will be clad in mahogany with brass banding get some brick paper on the wall and flag stone floor and she could start to look ok,,, but there is still something magical about Stirling engines ,,,, In fact I have thought about putting a displacer cylinder alongside the engine house wall and making it look like a Lancashire boiler. Then obviously the power cylinder would have to be smaller ,,, about an inch in diameter so I could in theory put that inside the 4 inch cylinder as I have it now and that would keep the proportions correct,,, but my theory falls apart when it comes to getting a linkage from the crankshaft to the displacer cylinder,,, but then again we could re-build her with an aluminium cylinder etc,, and try to get her going on steam,,, we will see. cheers and thanks Alan
Прекрасная работа!
WOW ! Lovely ! 🧐🇬🇧🤔😀😀😀👍🏻👍🏻👍🏻❤️❤️❤️
Thank you : )
Brilliant! Great British Engineering (and good old back yard engineering!) at its best!!
THIS is why they put they "GREAT" in Great Britain!
Wonder if you could scale this up or apply it to run something, perhaps a small go cart or dinghy or just an electricity generator perhaps linked to a rewired alternator charging battery cells and/or direct into a voltage regulator/inverter etc etc? (With a slightly larger version of course!) Lol 😂 but this design in particular runs very well and smoothly low noise, I think scaled up and tweaked this COULD be a very FRUGAL and ingenious modern re implementation of an old technology given the fuel crisis/position people are in this LITERALLY could be one cheap simple and efficient answer to saving money!!? (Even at this scale I'm sure this could be added to to charge low voltage battery packs for power tools perhaps? Or phones laptops, aimed at off Grid living or times if power cuts or to save money.. (or even charge car batteries or LifePo4 cells for off Grid in addition to say a wind and solar set up??)
Well done!! Cheers from London 👍🏴
Thanks mate for your interest and comments. Gary. Rochester Kent.
Hey Gary Knight,
This is one amazing model you have created. I was wondering if by any chance I can have some of your dimensions for example flywheel crankshaft robs and ect, so that I can design one of my own to have and show off?
Base
i like that engine very much, i'm still working on perfecting my version of a double beam engine to run as smooth as yours..great job...can you tell me what fluid you use to eliminate the soot buildup ?
Hi eastenderaz1 , i use a methylated spirit burner i made , i still get a little bit of soot from the wick slowly burning , a meths vapour burner would be cleaner. A nice blue flame is the cleanest , a yellow flame produces soot. Good luck with your engine mate , please show it when your finished . Im close to finishing a new more detailed engine myself .
Gary Knight
thanks for your response....can you tell me how much time it took you to get a finished working engine?
eastenderaz1 This engine took about 3 weeks of doing a bit in the evenings after work when i had some free time . The engine i'm working on now
i have been working on for about 3 months on and off.
Amazing
very nice
nice job!!!
great engine. do you know how many rpms was that running at?
Hi Monkeymadman420 , i'm sorry but i dont know , i have not got a tool to read the speed . It will run alot faster than that if i make the wicks longer to produce a bigger flame & therefore more heat . I have just finished my next engine which i will be filming & posting soon . cheers mate.
WISH WE HAD A FULL DIY ON IT..
Hi. Sorry there are not a any instructions on my builds. At the time of making them I was only building them for myself. With no thought that I would show them on youtube. I also didn't make any plans as I was just tinkering around and thinking things out as I went along. Thanks for your interest.Gary
what a beauty
You did an awesome job ! What is that nice black coating?
Frenchie Hi Frenchie thanks for complement , the black coating is a heat proof black spray paint bought at a DIY store , its used for high temperatures as on barbeques or stoves .
+Gary Knight you can get ready made steel push rods from your old umbrella. With holes and all!
Excellent job and very neat especially considering you did it with no drawings. I'm curious to know what bearings you have used in the welding rod connecting rods?
+valvelifter1951 Thanks mate , the connecting rod bearings are made from brass tubing , the flywheel crank arm pins are small BA bolts & nuts , i had some small diameter brass tube thats a snug fit over the bolts ( this made the journals ) and then fitted short lengths of the next size up brass tube into the ends of the alloy welding rod connecting rods ( these became the bearings ) . when assembled with a coating of light oil you have a smooth running connection with no play and therefore no noise / knocking . I think i used 4mm & 5mm brass tubing which was bought from a hobby store . Hope i've explained it clear enough and that this helps you in any way . :)
+Gary Knight Thanks Gary, I've just designed a single cylinder Stirling engine using a bell crank to obtain the 90 degree phase shift between the power piston and the displacer. It's a configuration I chose after watching several examples on you tube. I originally designed one using a beam similar to yours but then found a simpler set-up. Also, I am using a wine makers' demijohn for the displacement cylinder as I wanted it to be see through. I have found a way to cut a 3 inch deep cylinder after many failed attempts :) . My design has the power cylinder on the top plate of the displacement cylinder as I did not fancy trying to cut into the side of the glass displacement cylinder. It also has a very simple crankshaft but I was wondering if I would need ball bearings for the connecting rods so I will try your solution with brass tubing. Yours has the advantage of less reciprocating weight as well as being small and neat. I'll send you a link when I've built it and put it on youtube.
+valvelifter1951 I can't wait to see it , it sounds like you've put a lot of thought into your design and manufacturing , should be a great engine when finished. good luck mate. :)
Que genial motor :)
I do believe that saying you're content with an engine is a violation of man code. It may very well be true, but you're obligated to at least mention a passing desire to slap a supercharger on it.
what is a diameter of flywheel,and walking beam length between the flywheel and cylinder arrangement
did you use any power tools and if so, what were they? I am interested in building one of these to power some of my projects! THank you far making this video, as it is the best quality engine that I have seen yet! :)
Hello Zhasie Shmoist . The only power tool used was a battery powered drill for all the fixing points and to help shape the openings in the flywheel .
beautiful! im curious if you had to do anything to get the cylinders to match speed?
+Clean Phil Wanted . Thank you , when i built the cylinders i made both as close to identical as possible . As these engines have very low torque if there is a slight difference in power between the cylinders it will not cause an out of balance shudder and as the power pistons are linked through the flywheel they can not go out of sync . Hope this explains it clear enough :)
Awesome.
Nice machine! What did you use to keep a tight seal on the displacer piston rods at the top of the cans and if there was a gap, was the gap very tight. Thanks.
+Telecastvids . Hi mate , sorry not replied sooner , i had not viewed comments in a while . on this engine the displacer piston rods are made from a thick wire coat hanger and the guide sleeves 2 lengths of steel tube that i had in my tool box at work . The clearance gap was quite good but a couple of drops of 3 in 1 oil helps to seal the air in the cylinder and lubricate the moving rods as well . On my last engine i used 2 lengths of brass tube as the piston rod and guide sleeve ,the smaller diameter tube was a perfect sliding fit inside the larger tube . these were purchased at a hobby shop . Hope this has been of some help . : ) Gary
Gary Knight thanks gary