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<div dir="ltr" data-setdir="false">Hi Rick, I use a first stage regulator with the spring removed to act as the pressure compensator. I use a first stage to bring down the pressure from the tank as normal, then send that air to the second first stage regulatow with spring removed, then to the motors. The output pressure to the motor is a constant 2 psi or so. I tie all the motors and arm to the one regulator. I have had no luck with the scuba second stage regulator set up. Tested to 400 feet, no issues.</div><div dir="ltr" data-setdir="false">Hank</div><div><br></div>
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On Friday, January 23, 2026 at 03:46:07 AM MST, via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="ydpf9ef31c7yiv8537644025"><div><div class="ydpf9ef31c7yiv8537644025WordSection1"><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Hi Rick, </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;">I meant that this is probably know to you. Proverbs translate not very well </span><span lang="EN-GB" style="font-size:11.0pt;font-family:UI sans-serif;">😉</span><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;"></span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;">Br, Emile</span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;"> </span></p><div id="ydpf9ef31c7yiv8537644025yqt06630" class="ydpf9ef31c7yiv8537644025yqt1390393855"><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0cm 0cm;"><p class="ydpf9ef31c7yiv8537644025MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">Van:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> Personal_Submersibles <personal_submersibles-bounces@psubs.org> <b>Namens </b>Rick Patton via Personal_Submersibles<br clear="none"><b>Verzonden:</b> vrijdag 23 januari 2026 05:35<br clear="none"><b>Aan:</b> Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none"><b>Onderwerp:</b> Re: [PSUBS-MAILIST] second stage adjusting</span></p></div><p class="ydpf9ef31c7yiv8537644025MsoNormal"> </p><div><p class="ydpf9ef31c7yiv8537644025MsoNormal">Hi Emile, not sure what you mean by open door? My second stage is probably 18" to 24" lower than the thrusters but someone in the group said that he had adjusted his second stage I thought to more over bottom pressure than how they come off the shelf.</p><div><p class="ydpf9ef31c7yiv8537644025MsoNormal"> </p></div><div><p class="ydpf9ef31c7yiv8537644025MsoNormal">Rick</p></div></div><p class="ydpf9ef31c7yiv8537644025MsoNormal"> </p><div><div><p class="ydpf9ef31c7yiv8537644025MsoNormal">On Thu, Jan 22, 2026 at 12:07<span style="font-family:sans-serif;"> </span>PM via Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>> wrote:</p></div><blockquote style="border-width: medium medium medium 1pt; border-style: none none none solid; border-color: currentcolor currentcolor currentcolor rgb(204, 204, 204); padding: 0cm 0cm 0cm 6pt; margin-left: 4.8pt; margin-right: 0cm;"><div><div><div><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;">Hi Rick,</span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;">Maybe a open door but the (vertical) position makes also a difference. Some 10-20”lower than the thruster will create overpressure. </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;">However, it should be tight without overpressure.</span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;"> </span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;">Br, Emile</span></p><p class="ydpf9ef31c7yiv8537644025MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:sans-serif;"> </span></p><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0cm 0cm;"><p class="ydpf9ef31c7yiv8537644025MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">Van:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> Personal_Submersibles <<a shape="rect" href="mailto:personal_submersibles-bounces@psubs.org" rel="nofollow" target="_blank">personal_submersibles-bounces@psubs.org</a>> <b>Namens </b>Rick Patton via Personal_Submersibles<br clear="none"><b>Verzonden:</b> donderdag 22 januari 2026 22:32<br clear="none"><b>Aan:</b> psubs chat room <<a shape="rect" href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank">personal_submersibles@psubs.org</a>><br clear="none"><b>Onderwerp:</b> [PSUBS-MAILIST] second stage adjusting</span></p></div><p class="ydpf9ef31c7yiv8537644025MsoNormal"> </p><div><p class="ydpf9ef31c7yiv8537644025MsoNormal">I had shared about a thruster leaking on my first dip. Someone in the group said that they had adjusted their second stage for more positive pressure. I am not sure how to do that.</p><div><p class="ydpf9ef31c7yiv8537644025MsoNormal"> </p></div><div><p class="ydpf9ef31c7yiv8537644025MsoNormal">Rick</p></div></div></div></div><p class="ydpf9ef31c7yiv8537644025MsoNormal">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></p></div></blockquote></div></div></div></div></div><div class="ydpf9ef31c7yqt1390393855" id="ydpf9ef31c7yqt18938">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
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