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<div dir="ltr" data-setdir="false">Jon, I wish I thought about this volume test before the dive, I would have made sure it was accurate. I think it was 3000 psi, but can't guarantee it. More testing is needed. </div><div dir="ltr" data-setdir="false">Hank</div><div><br></div>
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On Saturday, August 12, 2023, 12:31:43 PM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">It does kind of confirm the air consumption issue Cliff was concerned about which would make replacement of the air-tank a primary design consideration as well as planning for extra tanks. Calculates to a max of 4 dives to 400 feet per tank assuming a 3000psi start, maybe three dives for 4 inch diameter 101's. Folks with 1000 foot capability are going to use a lot more air. Also demonstrates we can't simply calculate the volume of the motors. All the hoses and parts that make up the plumbing have to be considered.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Jon</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div><div><br clear="none"></div>
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On Saturday, August 12, 2023 at 01:26:58 PM EDT, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">Cliff, my thrusters are 3 inch housings, so smaller than yours. I have two scuba second stage hoses and about 12 feet of 5\16 hose going to the aft motors. The whips are 1\4, but I wanted bigger to compensate for the length. The tank may have been a bit under also. The system is pretty tight because this morning when I checked the aft motors, they gave off a puff of air, and the tank was shut off when I loaded the sub.</div><div dir="ltr">Hank</div><div><br clear="none"></div>
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On Saturday, August 12, 2023, 11:07:05 AM MDT, Cliff Redus via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div dir="ltr">That's interesting. I calculated you would I would go from 3000 psig to 2,832 psig from a 80 scf tank at 400 feet for four MD-101 thrusters alone. 2,250 is a bit lower than expected. Are these MK 101's ? Are you using the air in this scuba tank for anything else? My calc does not take into account tubing connecting the regulator to thrusters. How many liner feet of tubing do you have and what size?</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Best</div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div>
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On Saturday, August 12, 2023 at 10:47:16 AM CDT, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718"><div>Cliff, the pressure in my 80 cu tank dropped to 2250 from 3000 to supply the 4 motors to 400 feet. <div>Hank<br clear="none"><br clear="none"><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><div id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718yqtfd13591" class="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718yqt3730723228"><br clear="none"><blockquote type="cite">On Aug 11, 2023, at 7:51 PM, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br clear="none"><br clear="none"></blockquote></div></div><div id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718yqtfd82741" class="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718yqt3730723228"><blockquote type="cite"><div dir="ltr">Thanks Hank, look forward to any videos.<div>Alan<br clear="none"><br clear="none"><div id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718ymail_android_signature"><a rel="nofollow noopener noreferrer" shape="rect" id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yiv6444292718ymail_android_signature_link" target="_blank" href="https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_">Sent from Yahoo Mail on Android</a></div> <br clear="none"> <blockquote style="margin:0 0 20px 0;"> <div style="font-family:Roboto, sans-serif;color:#6D00F6;"> <div>On Sat, 12 Aug 2023 at 1:41 pm, hank pronk via Personal_Submersibles</div><div><personal_submersibles@psubs.org> wrote:</div> </div> <div style="padding:10px 0 0 20px;margin:10px 0 0 0;border-left:1px solid #6D00F6;"> _______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"> </div> </blockquote></div><span>_______________________________________________</span><br clear="none"><span>Personal_Submersibles mailing list</span><br clear="none"><span>Personal_Submersibles@psubs.org</span><br clear="none"><span>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</span><br clear="none"></div></blockquote></div></div></div></div><div id="yiv3926036934ydp24eea905yiv8964758227ydp29639144yqtfd16976" class="yiv3926036934ydp24eea905yiv8964758227ydp29639144yqt3730723228">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div></div>
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