Brilliant. Really enjoying seeing this come together. The piston/cylinder fit must have to be spot on so well done getting that level of accuracy.
Stirling Hot Air Engine
- Thread starter Mr Bowcat
- Start date
Cheers Jim. 
Excellent work Bob.
Cheers Steve.
Fascinating little project. This is building up very nicely indeed. Not a technology I know very much about so I had a read up on it. It seems this two hundred plus year old design is just coming into its own in the twenty first century, being used in some of the most advanced technology of the age. Quite incredible for something invented a year after the battle of Waterloo. Great stuff 
Quite inspirational Bob, also very interesting.
Loved watching this - very envious of your skill-set here! (you couldn't knock me up a couple of dozen brass buttons for a potential 54mm Napoleonic build could you ... ?) 
Steve
Steve
Loved watching this - very envious of your skill-set here! (you couldn't knock me up a couple of dozen brass buttons for a potential 54mm Napoleonic build could you ... ?)
Steve
Look up lace pins, they come in a large variety of sizes so should fit the bill nicely……
Don't believe you've chickened out of this little challenge LOL!
Steve
Steve
Er, what????
Cheers guys, glad you are enjoying this project.
Steve, happy to give it a go if you supply the material, brass is spendy.
I've been busy this weekend with Christmas stuff, but did manage to get some workshop time to make the last part, the cooling fin. If you remember from the last post, this had been started and looked like this.
The bolted together fins were then mounted on a mandrel in the lathe and turned round, then once done removed from the mandrel, re-chucked in the lathe using the outside jaws and the central hole bored out to around 20mm (it was bored until it was a sliding fit on the displacer cylinder).
And the final parts were the brass spacers. This started as a length of 25mm brass rod, turned down to 24mm OD and bored to 20mm ID, then each ring parted off at 5mm.
And this is the completed assembly.
Unfortunately time ran out after this. I had to get the workshop cleared of swarf and oil as it is becoming a storage shed over the festive period, so I won't get to run the engine probably until the new year now.
Steve, happy to give it a go if you supply the material, brass is spendy.
I've been busy this weekend with Christmas stuff, but did manage to get some workshop time to make the last part, the cooling fin. If you remember from the last post, this had been started and looked like this.
The bolted together fins were then mounted on a mandrel in the lathe and turned round, then once done removed from the mandrel, re-chucked in the lathe using the outside jaws and the central hole bored out to around 20mm (it was bored until it was a sliding fit on the displacer cylinder).
And the final parts were the brass spacers. This started as a length of 25mm brass rod, turned down to 24mm OD and bored to 20mm ID, then each ring parted off at 5mm.
And this is the completed assembly.
Unfortunately time ran out after this. I had to get the workshop cleared of swarf and oil as it is becoming a storage shed over the festive period, so I won't get to run the engine probably until the new year now.
Was only joking mate - a vote of confidence in your abilities! I'm sure you would have made a pukka job of it!
Steve
This is brilliant. I seem to be looking at a mix of precision engineering and art.
Absolutely brilliant. Very interesting and great photos and explanation. Looking forward to seeing it all come together now.
Colin's post hit the nail on the head - precision engineering and art.
Colin's post hit the nail on the head - precision engineering and art.
So impressed
Cheers all. Will hopefully get into the workshop at the weekend and see if I can get it to run.
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