<font color='black' size='3' face='Arial, Helvetica, sans-serif'><font size="3">I think Alan may be right about the bounciness, but the real charm for that system is that you can run it with 3-way valves and not have the added charms of a hydraulic system. That was the idea with the Nuytco sub. Simplicity and low cost.</font>
<div><font size="3">Vance<br>
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<div style="font-size: 10pt; font-family: helvetica, arial; color: black;">-----Original Message-----<br>
From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br>
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br>
Sent: Wed, Feb 11, 2015 4:11 pm<br>
Subject: Re: [PSUBS-MAILIST] Manipulator<br>
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<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>Hi Scott,</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>I was more advocating using hydraulic cylinders with a hydraulic system.</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>However Phil had a pneumatically operated manipulator on a K style</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>sub he manufactured. Mainly I think for simplicity & cost.</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>For commercial use maybe the pneumatics would be limited; but there </span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>would be plenty of air if you just wanted to pick up a gold bar if you </span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>happened upon one.</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span>A divers regulator gives you 130psi above ambient so compensating is not a </span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr"><span id="yui_3_16_0_1_1423687975907_8754">problem. Perhaps some overpressure valves for expansion on ascent.</span></div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr">I would think the pneumatics would be OK moving your manipulator</div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr">to the target, but bouncy once you picked up a load & were moving it.</div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr">Vance would know.</div>
<div id="yui_3_16_0_1_1423687975907_8516" dir="ltr">Alan</div>
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<div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1423687975907_8514">
<div dir="ltr" id="yui_3_16_0_1_1423687975907_8513"> <hr size="1" id="yui_3_16_0_1_1423687975907_8752"> <font size="2" face="Arial" id="yui_3_16_0_1_1423687975907_8753"> <b><span style="font-weight:bold;">From:</span></b> "<a href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
<b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br>
<b><span style="font-weight: bold;">Sent:</span></b> Thursday, February 12, 2015 8:17 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Manipulator<br>
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<div id="yui_3_16_0_1_1423687975907_8751">Alan, </div>
<div id="yui_3_16_0_1_1423687975907_8748">I looked into air, but it presents some problems. One is compensating it otherwise you will get less preformance based on depth. Two is they are not as stiff and have give as well as less fine control. Also another problem is if you used compressed air, you have a limiting factor or you could use a compressor, but have to have a bank to draw from.</div>
<div id="yui_3_16_0_1_1423687975907_8839">The main draw back of hydraulic for me was the mess and polution factor. Otherwise, hydraulic seems to be the way to go.</div>
<div>I am hoping to come up with a manipulator design that can be used on most psubs that is easy and affordable.</div>
<div>Thanks,</div>
<div>Scott Waters</div>
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<div style="font-size:9px;color:#575757;">Sent from my U.S. Cellular® Smartphone</div>
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<br clear="none"><br clear="none">-------- Original message --------<br clear="none">From: Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none">Date:02/11/2015 12:52 PM (GMT-06:00) <br clear="none">To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none">Cc: <br clear="none">Subject: Re: [PSUBS-MAILIST] Manipulator <br clear="none"><br clear="none">
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<div class="yiv9224396097yqt9843190033" id="yiv9224396097yqt77379">
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<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span>Hank,</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span id="yiv9224396097yui_3_16_0_1_1423679966068_5204">why not just use air if the pneumatic cylinders are rated for 150 psi.</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span id="yiv9224396097yui_3_16_0_1_1423679966068_5143">If they are rated for 150 psi it would be assumed that their mechanical strength</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span id="yiv9224396097yui_3_16_0_1_1423679966068_5210">would match the load they can lift with 150 psi also.</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span id="yiv9224396097yui_3_16_0_1_1423679966068_5211">Is there any advantage other than the o ring working both ways to stop water</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span id="yiv9224396097yui_3_16_0_1_1423679966068_5212">ingress, as you have said previously. Does anyone else use them in place</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span>of hydraulic cylinders?</span></div>
<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5094"><span>Alan</span></div>
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<div dir="ltr" id="yiv9224396097yui_3_16_0_1_1423679966068_5087"> <hr id="yiv9224396097yui_3_16_0_1_1423679966068_5235" size="1"> <font id="yiv9224396097yui_3_16_0_1_1423679966068_5086" size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, February 12, 2015 7:21 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Manipulator<br clear="none"> </font> </div>
<div class="yiv9224396097y_msg_container" id="yiv9224396097yui_3_16_0_1_1423679966068_5090"><br clear="none"><br clear="none">No problems, Gamma has air cylinders and at 1,000 feet the hydraulic pump is set at 1,100 psi. Your K sub can have a pressure setting of 500 or less and work just fine. Remember, your not lifting a lot just the arm plus a bit.<br clear="none">Hank--------------------------------------------<br clear="none">On Wed, 2/11/15, <a rel="nofollow" shape="rect" id="yiv9224396097yui_3_16_0_1_1423679966068_5093" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] Manipulator<br clear="none"> To: "Personal Submersibles General Discussion" <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Wednesday, February 11, 2015, 12:23 PM<br clear="none"> <br clear="none"> Do you<br clear="none"> have any problem with over pressure though? The pnuematic<br clear="none"> cylinders are rated to 150psi with air and 1000 psi with<br clear="none"> oil. 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"> <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> Date:02/11/2015 11:12 AM (GMT-06:00) <br clear="none"> To: personal_submersibles<br clear="none"> <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> Cc:<br clear="none"> <br clear="none"> Subject: Re: [PSUBS-MAILIST] Manipulator<br clear="none"> <br clear="none"> <br clear="none"> hi Scott<br clear="none"> use a<br clear="none"> hydraulic pump just the same as if you used hydraulic<br clear="none"> cylinders<br clear="none"> Hank <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> From:<br clear="none"> <br clear="none"> <a rel="nofollow" shape="rect" 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" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>; <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> To:<br clear="none"> <br clear="none"> psubs<br clear="none"> <<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>>; <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Subject:<br clear="none"> <br clear="none"> [PSUBS-MAILIST] Manipulator <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Sent:<br clear="none"> <br clear="none"> Wed, Feb 11, 2015 3:39:07 PM <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> Hank,I know you<br clear="none"> said to use pnumatic cylinders for the manipulator arm.<br clear="none"> What kind of pump do you<br clear="none"> use?Thanks,Scott Waters<br clear="none"> <br clear="none"> Sent from my U.S.<br clear="none"> Cellular®<br clear="none"> Smartphone<br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> <br clear="none"> -----Inline Attachment Follows-----<br clear="none"> <br clear="none"> _______________________________________________<br clear="none"> Personal_Submersibles mailing list<br clear="none"> <a rel="nofollow" shape="rect" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><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 clear="none"> <br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><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 clear="none"><br clear="none"></div>
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