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Robinson Hot Air Engine.
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shoey51:

--- Quote from: sbwhart on November 17, 2010, 01:47:28 AM ---Looks like you've bin whipping them horses Dave

 :whip: :whip: :whip: :whip: :whip:

You can't beat making your kit work for a living.

Fix looks good.

Stew



--- End quote ---

im still confused but thats me generaly  :scratch: :coffee:
Stilldrillin:
You're confused Graham??  

By 'ek lad...... Yer aught to try it from up close & personal!  :scratch:


No machining time today, but got a few minutes to sort through the box of parts... The bloody displacer is wobbling on it's shaft!! :bugeye: :bang: :bang:

The silver soldering has let go! It's only been in the box with the other parts....... Sigh........

Still, I've got all winter to sort it. And, I guess that will open up a new discussion on how to make the best displacer.  :thumbup:

David D
Bogstandard:
Dave,

I know exactly how you are feeling.

I used to restore or fix badly made or worn out engines, and things made by other people never seem to come up to your own expectations of how it should be done.

I think in your case, by the amount of fiddling and tweaking you have had to do, it would have been easier to make one from scratch.


John
madjackghengis:
Hi Dave, I'm not confused, just seeing what I'm used to seeing in my own shop, in someone else's :bang:  Being on medical retirement from the Marines, I tend to be the recipient of other's junk and garage clean out, as that tends to be in my price range.  I think you're idea will work fine, I know you'll get a much better performance when the parts are all up to your own standards, and until then, you won't be happy.  Given you're going to have to do something with the displacer, I'd recommend you use a stainless steel can for it, if you can find one that is a fairly close fit, with little excess space.  I've got two cans I cut out of used fuel filters for fuel injected cars with the medium pressure pump in the tank, requiring sturdy filters in between.  Right now, I haven't found the suitable sized container/body to run them in, but if you go to a repair shop, it's quite possible you can find a filter can that matches your diplacer cylinder bore minus the necessary clearance, in their trash can.  Both my cans came out of cars I had to replace the filter in.  I'm looking for a tempered glass chamber close to the size, so the displacer can be watched, but that's a different story.  The less heat the can conducts north, the more efficient the displacer acts in its part of the whole heat cycle, and a brass one conducts too much heat if you can find a replacement.
   All that cast iron work looks good, and I like the fact you're doing a bang up job of cleaning up a mess left by someone else, and think it will make a great improvement in your engine, and won't be a niggling thing left in the back of your mind all the time.  As you can probably tell, I wish very much that had happened to be left on my own doorstep, but I won't be greedy.  It's enough to see you doing the good job.  Now I'm really looking forward to seeing it finished and running. I've copied pictures so I can try to fabricate something that cobles together to look close enough to get the cast iron charm and antique look that engine has.  If you needed to, you could even take a sheet of stainless steel ten or fifteen thousandths thick, roll it in a tube and silver solder it, and solder a top and bottom to it, to get a right sized can if you can't find one.  What's the actual i.d. of the dispacer bore, if you don't mind my asking?  I might be able to find something of the right size and either send you one, or send you looking in the right place to find one.  I'd be right proud to help a cousin across the pond, particularly one who has done such careful work on a cock up. :nrocks:  It'd be the least I could do, frankly. :headbang: mad jack
Stilldrillin:


--- Quote from: bogstandard on November 20, 2010, 12:48:22 AM ---Dave,
I know exactly how you are feeling.

I used to restore or fix badly made or worn out engines, and things made by other people never seem to come up to your own expectations of how it should be done.

I think in your case, by the amount of fiddling and tweaking you have had to do, it would have been easier to make one from scratch.
John

--- End quote ---

Yer right John!
But, where would be the fun in that? I've always enjoyed "sorting things out", if I could......  :smart:

I am having fun..... Aren't I?   :thumbup:

Am I?  :scratch:

David D


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