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Robinson Hot Air Engine.
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madjackghengis:
Hi David,  I've been going back over your postings, I seemed to have missed the photo of the "large stirling engine", must have been mesmerized with the cute photo of your newest inspector for the production line.  Looks like she's a "keeper", like John said, the worst is having to polish out the teeth marks.  That is a beautiful, large stirling engine. :lol:  Of course if it got in my shop, it would soon get hot, leave the paint behind in stages and flakes, and start looking like my stove, which won't stop rusting for some reason.  Must be the high heat and the cold cycling or something.  This build has been a real pleasure to follow, particularly since it gives me a basic concept type engine to copy, that would work with my stove, just a matter of adapting some aspects.  I'm glad I jumped back a page, and saw that engine I missed before.  :hammer:  great work on getting everything back toward where it should have been in the first place though.  :nrocks: mad jack
madjackghengis:
Hi again David, I was going to say, running the engine with good quality anti-freeze will boil out the air from the water in time, I don't know how long in the stirling engine, but that's why you never get rust inside your car engine, if you keep fresh antifreeze in it.  It gets past boiling temperature the first time you drive it.  They make paints particularly for the inside of race engines, to make the oil run down the walls faster, and seal the pores of the block, it will stand five hundred degrees for years without any loosening at all, it probably wouldn't stand the direct flame, but would be fine for all the water filled parts.  I understand the fact that there's always another engine waiting, but sooner or later you have to run something with one, and then it becomes a new standard for operation if you're not careful. :headbang: mad jack
Stilldrillin:
Thanks for your comments Chaps!  :thumbup:

I've decided to cool the engine using the top up solution.
Also, to dry out by piping air through, from an aquarium pump, for a couple of days afterwards.....


Looks as though the weather has closed me down again.....   :(

Only got a little bit done.  ::)

The top deck casting was machined barrel shaped, both sides!  :bang:

Drawfiled/ emeried .005", from the centre of this side......




And .025" or so, from this side......




Emeried out the rust, from the casting airway bore.....




Fitted the 5/16" tube......




Remembered to overlap the joint face area.
So it will butt against the new section of displacer housing, when I mill the new joint face ring.....




Also, roughed out a new 3mm thick cover plate.......




It's snowing like Billy Ho at the moment. Guess it will be some time before any more work gets done.....

David D
NickG:
Nice work David, it still feels good to get  abit done though. Strangely the cold hasn't effected me when I've actually been in the garage this winter, just laziness that prevents me!!

Nick
arnoldb:
That's some nice restoration work David  :thumbup:

Keep 'em coming; I hope the UK weather lets up for you guys...

 :beer:, Arnold
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