<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><p dir="ltr">That is exactly what it is, and you can build a hard tank of any size and just add the airbag on to provide compensatory volume. You need to precharge the airbag, either by just expanding it or by spring loading it, such that you still have positive pressure over ambient at the highest fluid demand. Also give consideration to vent cap locations - you want to be able to bleed air off over your tank and at any high points.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On January 21, 2015 4:37:07 PM MST, "swaters@waters-ks.com via Personal_Submersibles" <personal_submersibles@psubs.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div>I reveiwed my pictures and Nuytco uses hydro-lek manipulator arms with a resevor that looks just like a air bag for semi trucks. I am pretty sure they are hydraulic.</div><div>Thanks,</div><div>Scott Waters</div><div><br /></div><div><br /></div><div><div style="font-size:9px;color:#575757">Sent from my U.S. Cellular® Smartphone</div></div><div></div><br /><br />-------- Original message --------<br />From: hank pronk via Personal_Submersibles <personal_submersibles psubs.org="psubs.org"> <br />Date:01/21/2015 5:01 PM (GMT-06:00) <br />To: Personal Submersibles General Discussion <personal_submersibles psubs.org="psubs.org"> <br />Subject: Re: [PSUBS-MAILIST] Manipulator arm <br /><br /><br />Alan,<br />When I had my tour of Nuytco, I saw the arms well actually a shelf full of them and the valves. I assumed they were hydraulic, but maybe not. It could work with sea water, but fresh water could be problematic with freezing.<br
/>Hank--------------------------------------------<br />On Wed, 1/21/15, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br /><br /> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br /> To: "Personal Submersibles General Discussion" <personal_submersibles@psubs.org><br /> Received: Wednesday, January 21, 2015, 2:50 PM<br /> <br /> Not sure,<br /> but don't the "Deep Workers" have<br /> a hydraulic<br /> system using sea water, with externalpump &<br /> valves.Does<br /> anyone know anything about this?Alan<br /> From:<br /> "swaters@waters-ks.com via Personal_Submersibles"<br /> <personal_submersibles@psubs.org><br /> <br /> To: Personal<br /> Submersibles General Discussion<br /> <personal_submersibles@psubs.org> <br /> <br /> Sent:<br /> Thursday, January 22, 2015 4:58 AM<br /> Subject: Re:<br /> [PSUBS-MAILIST] Manipulator arm<br /> <br /> <br /> My
plan<br /> was to use O ring seal. I am using a comoensated<br /> system.Thanks,Scott<br /> Waters<br /> <br /> Sent from my U.S.<br /> Cellular® Smartphone<br /> <br /> -------- Original message<br /> --------<br /> From: hank pronk via<br /> Personal_Submersibles <br /> Date:01/21/2015 <br /> 9:41 AM (GMT-06:00) <br /> To: Personal<br /> Submersibles General Discussion <br /> Subject:<br /> Re: [PSUBS-MAILIST] Manipulator arm <br /> <br /> <br /> Scott,<br /> You<br /> need to decide on what type of hyd system you are going with<br /> before you dive into cylinders. If you are going with a<br /> pressure compensated system, you can use cylinders with a<br /> wiper seals on the shafts. If you not pressure<br /> compensating, then use cylinders with o-ring seals on the<br /> shafts. I would use o-ring sealed shafts regardless.<br /> Hank--------------------------------------------<br /> On Wed, 1/21/15, swaters@waters-ks.com via<br />
Personal_Submersibles<br /> <personal_submersibles@psubs.org> wrote:<br /> <br /> Subject: Re: [PSUBS-MAILIST]<br /> Manipulator arm<br /> To: "Personal<br /> Submersibles General Discussion"<br /> <personal_submersibles@psubs.org><br /> <br /> Received: Wednesday, January 21, 2015, 8:25 AM<br /> <br /> Gotcha.<br /> I<br /> got about 8 different suppliers I have found so far with<br /> SS cylinders. I think I'll order a few to<br /> play with. I<br /> am also planning on using<br /> electric silionoids for<br /> controlling the<br /> valves.Thanks,Scott<br /> Waters<br /> <br /> <br /> Sent<br /> from my U.S.<br /> Cellular® Smartphone<br /> <br /> <br /> -------- Original message --------<br /> From:<br /> hank pronk via Personal_Submersibles <br /> <br /> Date:01/21/2015 6:54 AM (GMT-06:00) <br /> <br /> To: Personal Submersibles General Discussion <br />
Subject: Re: [PSUBS-MAILIST] Manipulator arm<br /> <br /> <br /> <br /> <br /> Scott,<br /> Gamma uses air cylinders with<br /> hydraulic fluid and<br /> pump. The hydraulic<br /> system is very standard except it<br /> uses air<br /> cylinders in place of hydraulic cylinders. <br /> <br /> Hank--------------------------------------------<br /> On Tue, 1/20/15, swaters@waters-ks.com via<br /> Personal_Submersibles<br /> <br /> <personal_submersibles@psubs.org> wrote:<br /> <br /> Subject: Re:<br /> [PSUBS-MAILIST] Manipulator arm<br /> To:<br /> "Personal Submersibles General Discussion"<br /> <personal_submersibles@psubs.org><br /> Received: Tuesday, January 20, 2015, 10:27<br /> PM<br /> <br /> <br /> Is Gamma all air cylinders? Do you just<br /> use<br /> a air compressor? What happens to the<br /> air once it is in<br /> the<br /> <br />
cylinder and you want to lower the cylinder? Is it<br /> recompressed or somehow expelled? I really<br /> don't know<br /> crap about pnematics.<br /> Haha. Why do all the subs use<br /> hydrolics<br /> and not air. For example<br /> <br /> hydro-lek?Thanks,Scott<br /> Waters<br /> <br /> Sent<br /> <br /> from my U.S. Cellular® Smartphone<br /> <br /> -------- Original message --------<br /> From: hank pronk via Personal_Submersibles <br /> <br /> Date:01/20/2015 9:06 PM (GMT-06:00)<br /> <br /> To: Personal Submersibles General<br /> Discussion <br /> Subject: Re:<br /> [PSUBS-MAILIST] Manipulator arm <br /> <br /> <br /> Scott,<br /> Not sure why you want hydraulic cylinders. <br /> You want<br /> air cylinders, they are light<br /> weight and all<br /> aluminum. <br /> If you use 2 in bore air cylinders
you can<br /> run on a 500<br /> psi<br /> <br /> system. Also air cylinders typically have 5/8 rods<br /> and<br /> that is the most<br /> important part. The rod size is<br /> what<br /> the water pressure is pushing back against<br /> you<br /> system. <br /> Air<br /> cylinders have a single o ring on the piston and are<br /> cheap and easy to replace. If you want ss<br /> rods then just<br /> replace the chrome rods<br /> when they wear out. I made<br /> my<br /> own rods for Gamma, easy peezy.<br /> <br /> Hank--------------------------------------------<br /> On Tue, 1/20/15, swaters@waters-ks.com<br /> via<br /> Personal_Submersibles<br /> <personal_submersibles@psubs.org><br /> wrote:<br /> <br /> Subject: Re:<br /> [PSUBS-MAILIST] Manipulator arm<br /> To:<br /> "Personal Submersibles General<br /> <br />
Discussion"<br /> <br /> <personal_submersibles@psubs.org><br /> <br /> Received: Tuesday, January 20, 2015, 8:52 PM<br /> <br /> Hydrolic.<br /> Also what size bore does yoursub have<br /> Hank?Thanks,Scott Waters<br /> <br /> <br /> Sent<br /> from my<br /> U.S. Cellular® Smartphone<br /> <br /> -------- Original message --------<br /> From: hank pronk via<br /> Personal_Submersibles <br /> <br /> Date:01/20/2015 7:34 PM (GMT-06:00) <br /> <br /> To: Personal Submersibles General Discussion <br /> Subject: Re: [PSUBS-MAILIST] Manipulator<br /> arm <br /> <br /> <br /> Are you using hydraulic cylinders or air<br /> cylinders.<br /> <br /> Hank--------------------------------------------<br /> On Tue, 1/20/15,
swaters@waters-ks.com<br /> via<br /> Personal_Submersibles<br /> <personal_submersibles@psubs.org><br /> wrote:<br /> <br /> Subject:<br /> [PSUBS-MAILIST] Manipulator arm<br /> To:<br /> "psubs"<br /> <br /> <personal_submersibles@psubs.org><br /> <br /> Received: Tuesday, January 20, 2015, 7:51 PM<br /> <br /> Does<br /> anyone have a reccomendation on a source<br /> for<br /> hydrolic<br /> <br /> cylinders? Ofcourse there are tons online, just<br /> wondering<br /> if<br /> someone has a particular place they like<br /> to get<br /> them.Thanks,Scott Waters<br /> <br /> Sent<br /> from my U.S. Cellular®<br /> Smartphone<br /> <br /> -----Inline Attachment Follows-----<br /> <br /> <br
/> <br /> _______________________________________________<br /> Personal_Submersibles mailing list<br /> Personal_Submersibles@psubs.org<br /> <br /> <br /> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br /> <br /> <br /> <br /> _______________________________________________<br /> Personal_Submersibles mailing list<br /> Personal_Submersibles@psubs.org<br /> <br /> <br /> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br /> <br /> <br /> <br /> -----Inline Attachment Follows-----<br /> <br /> <br /> _______________________________________________<br /> Personal_Submersibles mailing list<br /> Personal_Submersibles@psubs.org<br /> <br /> <br /> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br
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/>_______________________________________________<br />Personal_Submersibles mailing list<br />Personal_Submersibles@psubs.org<br />http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles<br /><br /><p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre class="k9mail"><hr /><br />Personal_Submersibles mailing list<br />Personal_Submersibles@psubs.org<br /><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br /></pre></personal_submersibles></personal_submersibles></blockquote></div></body></html>