[PSUBS-MAILIST] (no subject)

[Bernie Hellstrom via Personal_Submersibles]

Real simple!  Just do it with analog timers and relays.  👍👍👍.

Sent from my iPhone

On Nov 15, 2022, at 7:02 PM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

I might have chimed in here, because the design of this sort of thing is precisely what I do for a living, but my experience is likely not that relevant to the DIY'er. I work with multimillion dollar computer controlled servohydraulic load frames and pressure collapse chambers, which changes the game a bit.

Still, always interesting to see how these problems are tackled using amateur infrastructure. Looking forward to your report.

Sean

-------- Original Message --------
On Nov. 13, 2022, 08:44, hank pronk via Personal_Submersibles < personal_submersibles at psubs.org> wrote:

Hi submarine friends. I just completed a pressure test to failure on our Cast Epoxy port. The port was 1 inch by 8 inches OD. An acrylic port this size is rated to fail at 2,100 feet sea water. My Epoxy port failed at 1,225 psi or 2,744 feet fresh water. Any ideas on how to make a hydraulic apparatus to cycle the port from zero to operating depth in my chamber? Hank Sent from my iPhone _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles _______________________________________________
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