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| sbwhart:
--- Quote from: Stilldrillin on November 10, 2013, 03:21:05 PM ---WOW, Steve!!! :bugeye: Is that a diaphragm. As opposed to a power piston? :scratch: "Maybe I should take it up again". Well.... I, for one. Think you should! Soon!! :D David D --- End quote --- Yes I think you should too. I've been running mine on and off for the past few days, adjusting/fiddling with it:- made a better displacement piston, and I've taken a few funny kicks out of the motion slowly slowly its getting better will run for 21 minutes on one cup of boiling water. I'm thinking of changing all the moving parts from brass to ally to get the weight down. I've also got some glass tube to try with a graphite piston but I wont to get the best out of what I've got at the moment before I try that one. Bugger this Stirling :proj: I've got a real bad dose Dam you Dave :lol: Stew |
| vtsteam:
Don't want to hijack here so Stew, send me elsewhere if it is! David, no. not a diaphragm, it's a just a big square displacer cylinder. My daughter and I tried getting the smaller one running -- it has sat unused for about 3 years I reckon. After fiddling around with it, we took it apart finally, and substituted the old foam displacer, and got it running again. It has mostly aluminum sliding parts, and they were definitely not running together well. I didn't build this one, and it looks like it could really use a "David style" rebuild. The gland leaks for sure, and the aluminum power piston in aluminum cylinder just isn't good -- I did find a good sized divot in the inside of the cylinder near the top -- must have always been that way -- anyway filed it down. We did get it running -- but it could be a lot better. Maybe I will work on that big one -- you guys are getting me caught up in this, too! Getting the first one running brought back some of the fascination with seeing something sit on top of a cup of hot water running for a half hour. It's weird to walk away from something like that, forget about it for awhile, and come back in the room and see it is still running. :scratch: |
| Stilldrillin:
Stew, Steve......... These engines are infectious....... Aren't they! He, he, he....... :lol: :lol: Enjoy! :thumbup: David D |
| raynerd:
Nice work Stew - works a damn sight better than mine! I have to have boiling water on the bottom and ice at the top to have it turn a steady 30 rpm!! |
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