<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yiv0903119975"><div id="yui_3_16_0_1_1421882157143_8877"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1421882157143_8876"><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240"><span>Hank,</span></div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240"><span id="yiv0903119975yui_3_16_0_1_1421882157143_6939">they also use water hydraulics on the Remora rov.</span></div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240"><a rel="nofollow" shape="rect" id="yiv0903119975yui_3_16_0_1_1421882157143_6944" target="_blank" href="http://www.hydra-cell.com/applications/salt-water-pump.html" style="background-color:rgb(255, 255, 255);">http://www.hydra-cell.com/applications/salt-water-pump.html</a><br clear="none"></div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">I like the idea of Scott's, of housing the pump & shuttle valves</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">in an oil filled enclosure with flexible membrane for equalization;</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">however I wonder if there is much advantage. You would still have to</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">have through hulls in that enclosure for hydraulic hoses & electrical</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">power & signals. You would end up with more through hulls &</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">loose the ability to manually release pressure from the system</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">in an emergency.</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240">Alan</div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240"><br></div><div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6240"><br></div><div id="yiv0903119975yui_3_16_0_1_1421882157143_6240"> </div><br clear="none"> <div class="qtdSeparateBR"><br><br></div><div class="yiv0903119975yqt1867992483" id="yiv0903119975yqt81208"><div id="yiv0903119975yui_3_16_0_1_1421882157143_6238" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div id="yiv0903119975yui_3_16_0_1_1421882157143_6237" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div dir="ltr" id="yiv0903119975yui_3_16_0_1_1421882157143_6236"> <hr id="yiv0903119975yui_3_16_0_1_1421882157143_6243" size="1"> <font id="yiv0903119975yui_3_16_0_1_1421882157143_6235" size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, January 22, 2015 12:01 PM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Manipulator arm<br clear="none"> </font> </div> <div class="yiv0903119975y_msg_container" id="yiv0903119975yui_3_16_0_1_1421882157143_6239"><br clear="none"><br clear="none">Alan,<br clear="none">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 clear="none">Hank--------------------------------------------<br clear="none">On Wed, 1/21/15, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Wednesday, January 21, 2015, 2:50 PM<br clear="none"> <br clear="none"> Not sure,<br clear="none"> but don't the "Deep Workers" have<br clear="none"> a hydraulic<br clear="none"> system using sea water, with externalpump &<br clear="none"> valves.Does<br clear="none"> anyone know anything about this?Alan<br clear="none"> From:<br clear="none"> "<a rel="nofollow" shape="rect" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles"<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> To: Personal<br clear="none"> Submersibles General Discussion<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <br clear="none"> Sent:<br clear="none"> Thursday, January 22, 2015 4:58 AM<br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Manipulator arm<br clear="none"> <br clear="none"> <br clear="none"> My plan<br clear="none"> was to use O ring seal. I am using a comoensated<br clear="none"> system.Thanks,Scott<br clear="none"> Waters<br clear="none"> <br clear="none"> Sent from my U.S.<br clear="none"> Cellular® Smartphone<br clear="none"> <br clear="none"> -------- Original message<br clear="none"> --------<br clear="none"> From: hank pronk via<br clear="none"> Personal_Submersibles <br clear="none"> Date:01/21/2015 <br clear="none"> 9:41 AM (GMT-06:00) <br clear="none"> To: Personal<br clear="none"> Submersibles General Discussion <br clear="none"> Subject:<br clear="none"> Re: [PSUBS-MAILIST] Manipulator arm <br clear="none"> <br clear="none"> <br clear="none"> Scott,<br clear="none"> You<br clear="none"> need to decide on what type of hyd system you are going with<br clear="none"> before you dive into cylinders. If you are going with a<br clear="none"> pressure compensated system, you can use cylinders with a<br clear="none"> wiper seals on the shafts. If you not pressure<br clear="none"> compensating, then use cylinders with o-ring seals on the<br clear="none"> shafts. I would use o-ring sealed shafts regardless.<br clear="none"> Hank--------------------------------------------<br clear="none"> On Wed, 1/21/15, <a rel="nofollow" shape="rect" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST]<br clear="none"> Manipulator arm<br clear="none"> To: "Personal<br clear="none"> Submersibles General Discussion"<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Received: Wednesday, January 21, 2015, 8:25 AM<br clear="none"> <br clear="none"> Gotcha.<br clear="none"> I<br clear="none"> got about 8 different suppliers I have found so far with<br clear="none"> SS cylinders. I think I'll order a few to<br clear="none"> play with. I<br clear="none"> am also planning on using<br clear="none"> electric silionoids for<br clear="none"> controlling the<br clear="none"> valves.Thanks,Scott<br clear="none"> Waters<br clear="none"> <br clear="none"> <br clear="none"> Sent<br clear="none"> from my U.S.<br clear="none"> Cellular® Smartphone<br clear="none"> <br clear="none"> <br clear="none"> -------- Original message --------<br clear="none"> From:<br clear="none"> hank pronk via Personal_Submersibles <br clear="none"> <br clear="none"> Date:01/21/2015 6:54 AM (GMT-06:00) <br clear="none"> <br clear="none"> To: Personal Submersibles General Discussion <br clear="none"> Subject: Re: [PSUBS-MAILIST] Manipulator arm<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Scott,<br clear="none"> Gamma uses air cylinders with<br clear="none"> hydraulic fluid and<br clear="none"> pump. The hydraulic<br clear="none"> system is very standard except it<br clear="none"> uses air<br clear="none"> cylinders in place of hydraulic cylinders. <br clear="none"> <br clear="none"> Hank--------------------------------------------<br clear="none"> On Tue, 1/20/15, <a rel="nofollow" shape="rect" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via<br clear="none"> Personal_Submersibles<br clear="none"> <br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Manipulator arm<br clear="none"> To:<br clear="none"> "Personal Submersibles General Discussion"<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Tuesday, January 20, 2015, 10:27<br clear="none"> PM<br clear="none"> <br clear="none"> <br clear="none"> Is Gamma all air cylinders? Do you just<br clear="none"> use<br clear="none"> a air compressor? What happens to the<br clear="none"> air once it is in<br clear="none"> the<br clear="none"> <br clear="none"> cylinder and you want to lower the cylinder? Is it<br clear="none"> recompressed or somehow expelled? I really<br clear="none"> don't know<br clear="none"> crap about pnematics.<br clear="none"> Haha. Why do all the subs use<br clear="none"> hydrolics<br clear="none"> and not air. For example<br clear="none"> <br clear="none"> hydro-lek?Thanks,Scott<br clear="none"> Waters<br clear="none"> <br clear="none"> Sent<br clear="none"> <br clear="none"> from my U.S. Cellular® Smartphone<br clear="none"> <br clear="none"> -------- Original message --------<br clear="none"> From: hank pronk via Personal_Submersibles <br clear="none"> <br clear="none"> Date:01/20/2015 9:06 PM (GMT-06:00)<br clear="none"> <br clear="none"> To: Personal Submersibles General<br clear="none"> Discussion <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Manipulator arm <br clear="none"> <br clear="none"> <br clear="none"> Scott,<br clear="none"> Not sure why you want hydraulic cylinders. <br clear="none"> You want<br clear="none"> air cylinders, they are light<br clear="none"> weight and all<br clear="none"> aluminum. <br clear="none"> If you use 2 in bore air cylinders you can<br clear="none"> run on a 500<br clear="none"> psi<br clear="none"> <br clear="none"> system. Also air cylinders typically have 5/8 rods<br clear="none"> and<br clear="none"> that is the most<br clear="none"> important part. The rod size is<br clear="none"> what<br clear="none"> the water pressure is pushing back against<br clear="none"> you<br clear="none"> system. <br clear="none"> Air<br clear="none"> cylinders have a single o ring on the piston and are<br clear="none"> cheap and easy to replace. If you want ss<br clear="none"> rods then just<br clear="none"> replace the chrome rods<br clear="none"> when they wear out. I made<br clear="none"> my<br clear="none"> own rods for Gamma, easy peezy.<br clear="none"> <br clear="none"> Hank--------------------------------------------<br clear="none"> On Tue, 1/20/15, <a rel="nofollow" shape="rect" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a><br clear="none"> via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject: Re:<br clear="none"> [PSUBS-MAILIST] Manipulator arm<br clear="none"> To:<br clear="none"> "Personal Submersibles General<br clear="none"> <br clear="none"> Discussion"<br clear="none"> <br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Received: Tuesday, January 20, 2015, 8:52 PM<br clear="none"> <br clear="none"> Hydrolic.<br clear="none"> Also what size bore does yoursub have<br clear="none"> Hank?Thanks,Scott Waters<br clear="none"> <br clear="none"> <br clear="none"> Sent<br clear="none"> from my<br clear="none"> U.S. Cellular® Smartphone<br clear="none"> <br clear="none"> -------- Original message --------<br clear="none"> From: hank pronk via<br clear="none"> Personal_Submersibles <br clear="none"> <br clear="none"> Date:01/20/2015 7:34 PM (GMT-06:00) <br clear="none"> <br clear="none"> To: Personal Submersibles General Discussion <br clear="none"> Subject: Re: [PSUBS-MAILIST] Manipulator<br clear="none"> arm <br clear="none"> <br clear="none"> <br clear="none"> Are you using hydraulic cylinders or air<br clear="none"> cylinders.<br clear="none"> <br clear="none"> Hank--------------------------------------------<br clear="none"> On Tue, 1/20/15, <a rel="nofollow" shape="rect" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a><br clear="none"> via<br clear="none"> Personal_Submersibles<br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> <br clear="none"> Subject:<br clear="none"> [PSUBS-MAILIST] Manipulator arm<br clear="none"> To:<br clear="none"> "psubs"<br clear="none"> <br clear="none"> <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <br clear="none"> Received: Tuesday, January 20, 2015, 7:51 PM<br clear="none"> <br clear="none"> Does<br clear="none"> anyone have a reccomendation on a source<br clear="none"> for<br clear="none"> hydrolic<br clear="none"> <br clear="none"> cylinders? Ofcourse there are tons online, just<br clear="none"> wondering<br clear="none"> if<br clear="none"> someone has a particular place they like<br clear="none"> to get<br clear="none"> them.Thanks,Scott Waters<br clear="none"> <br clear="none"> Sent<br clear="none"> from my U.S. Cellular®<br clear="none"> Smartphone<br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> <br clear="none"> <br clear="none"> <a rel="nofollow" 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 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