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pressure bushing for connecting rod
Posted: Thu Nov 29, 2007 12:46 pm
by culinadge
I want to build a stirling that I can pressurize. What should I use for the bushing or fitting where the connecting rod exits the displacer cylinder to connect with the flywheel?
Thanks for any suggestions.
Posted: Tue Dec 04, 2007 11:23 pm
by Henrik
Hi
Im trying to make a pressurized engine like you are. The sealings I have found that might do the job are:
http://carstenholm.dk/page.asp?sideid=80&zcs=6
(type: Hat F)
They look like they have a low fiction.
How much pressure do you have i mind for your engine. I'll hope mine can run with up to 20 bar (290psi).
Posted: Wed Dec 05, 2007 5:39 am
by jesterthought
When considering seals, examine the pressure distribution on the section and estimate the resulting forces. Be aware of lubrication, distortions and jamming, too. Then make a prediction of friction.
As always, the Devil is in the detail. But insight pays off.
Jester.
Posted: Fri Dec 07, 2007 7:35 pm
by Mountain Stirling
I am curious why pressurizing the canister will have any impact? Does this improve performance?
Posted: Mon Dec 17, 2007 9:28 am
by Henrik