While researching on the net I found:- The Metronome Stirling Engine.
This engine uses a displacer piston only. The length of the plastic tube is 2.5 Meters but can be adjusted to make it run slow or quick. I found it hard to hold while it was operating.
This engine has very good torque and will be perfect for an electrical generator.
Specs:-
-The plastic tube connects into a 20mm/90 degree copper elbow. You can buy both at hardware store. (Don't use a smaller hole for the elbow, 20mm is perfect and engine starts right away when the centre rod is pulled).
-The centre cutout has to be half the diameter size of the can, i.e Can diameter is 100mm, the centre is 46mm diameter, I glued a cutout lid that size to centre, so that I could fix a rubber balloon which acts as the piston.
-The displacer piston is about 80% the length of the can, and is sparsely wound, Do not make it thick, otherwise engine will not work, refer photo of me holding sparsely steel wool. The steel wool piston can touch the inside of the can, as long as it is frictionless. garden mesh was used for the ends.
-Tip:-When connecting the centre rod to the balloon, put the balloon on tight first, through the rod, then clamp it with centre grub screw.
-I used both solder using butane torch and heat resistant epoxy glue (JB Weld) to mount the pipe and centre lid piece
try and keep away from silicon, better to use glue. the video and pics show silicon, but this heat resistant silicon came off. scratch any smooth surfaces before gluing, that way the glue will stick.
There might be other ways that you would do it, and that's fine, this is my first build, and it's all about learning.
I'm amazed how easily this engine works, it took about 40 seconds to start
if you follow the above specs you will easily get it working
I cannot take credit for this, it's just information which I found here:-
stirlingtechnology.blogspot.com then type metronome in search field top left.
Check out further updates on this channel, I'm uploading as i go along with the build
just a quick update 22/6/2024, after sometime operating, I had power loss that is because the steel wool piston had loosen from the mesh ends from the to and fro, so i have wrapped a wire around at half way and trimmed the mesh ends and clamped them towards the steel wool, now it runs flawlessley.
Негізгі бет Ғылым және технология Video14:- Metronome Stirling Engine. Very good Torque
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