Valvechest, thank you for your reply. In fact, I have a bicycle pump that is broke, so I have half of the spare parts!
What stroke did you use on the displacer and power piston? What are your dimensions for the displacer? Did you add a regenerator? I am thinking of using a pop can for a displacer and an empty hobby oxygen tank for the heat cylinder.
Both strokes are between 2-3'' the displacer is the no regenerative closed cylinder type. I would go and take some measurements for you, but you need to build your engine around your parts - just make the swept volume of the dispacer 1.5 (or a bit bigger) times that of the power piston and it will work.
hi, yes it will be capable of pumping water, just a question of volume + lift height really. I have tried putting weights on the top of the piston, to see how much it can lift while still running and it looks promising.
The plan is to pump the water through the waterjacket to maintain the heat differential.
I thought of using a bike pump cylinder recently too. More information on to to "cast" a "polyester piston" would be nice. And what's with the weird angle here?
I replaced the original rubber piston and poured resin into the cylinder. (polyester, as used in GRP) I used a disk of card sealed with wax to stop the resin pouring out the bottom. The resin shrinks a little when it cures, so to make a good seal I removed it and made a groove round the piston, into which a strand of valve gland packing fits. This makes a really good, low friction seal (with the help of a little WD40)
The piston is attached to the original piston rod via central hole and bolt.
Very awesome. I'm going to have to try this, since I don't have a lathe. Where do you get the polyester resin? Off the shelf or is it a specialty thing?
I had some left over from boat bulding but its easy to get hold of. Some people use it to repair car bodywork so you can probably get it at Halfords, and there is always some on ebay.
Be carefull because of the nasty chemicals through.
Nice! I like the oscillating power cylinder! Do u use this engine for something neither the experimental view of it? Tkx
StirlingEngine123 2 months ago
absolutely what I need. but I'm no engineer can you build one for me if sdo how much in uk
joeypumford1 3 months ago
Good job!
piespokladowy 1 year ago
put some magnets on the wheel and make some electricity! Great motor! congrats..
josephdupont 1 year ago
Brilliant. Love the idea of just grabbing the heat from a fire and doing something useful, without the hassle of steam :)
GerbilEssences 1 year ago
pretty cool, but why is it sideways?
drakesolar 2 years ago
whats with the bad camera angle?
This would have been a cool video if you had filmed the subject straight on
sleeplessinparadise 2 years ago
Where can I get one of these?
lucygonzales 2 years ago
You build one!
You could have had this one up until a few months ago, when I butchered it for parts.
Valvechest 2 years ago
I wish I didn't have to twist my head to see this straight; but WOW that is wicked cool. Five stars even sideways. :)
jupy921 2 years ago
Valvechest, thank you for your reply. In fact, I have a bicycle pump that is broke, so I have half of the spare parts!
What stroke did you use on the displacer and power piston? What are your dimensions for the displacer? Did you add a regenerator? I am thinking of using a pop can for a displacer and an empty hobby oxygen tank for the heat cylinder.
c55427 3 years ago
Both strokes are between 2-3'' the displacer is the no regenerative closed cylinder type. I would go and take some measurements for you, but you need to build your engine around your parts - just make the swept volume of the dispacer 1.5 (or a bit bigger) times that of the power piston and it will work.
Valvechest 3 years ago
is this engine powerful enough to pump water? When you pump water do you plan to somehow cool the power piston?
c55427 3 years ago
hi, yes it will be capable of pumping water, just a question of volume + lift height really. I have tried putting weights on the top of the piston, to see how much it can lift while still running and it looks promising.
The plan is to pump the water through the waterjacket to maintain the heat differential.
Valvechest 3 years ago
I thought of using a bike pump cylinder recently too. More information on to to "cast" a "polyester piston" would be nice. And what's with the weird angle here?
desiredusername 3 years ago
I replaced the original rubber piston and poured resin into the cylinder. (polyester, as used in GRP) I used a disk of card sealed with wax to stop the resin pouring out the bottom. The resin shrinks a little when it cures, so to make a good seal I removed it and made a groove round the piston, into which a strand of valve gland packing fits. This makes a really good, low friction seal (with the help of a little WD40)
The piston is attached to the original piston rod via central hole and bolt.
Valvechest 3 years ago
Very awesome. I'm going to have to try this, since I don't have a lathe. Where do you get the polyester resin? Off the shelf or is it a specialty thing?
desiredusername 3 years ago
I had some left over from boat bulding but its easy to get hold of. Some people use it to repair car bodywork so you can probably get it at Halfords, and there is always some on ebay.
Be carefull because of the nasty chemicals through.
Hope this helps with your builds.
Valvechest 3 years ago