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<div>Hugh,</div><div>I have to compensate with some means for sure. I was thinking I could have preset internal pressure but Alan has already scolded me over the idea ;-( . I was also thinking about oil compensating but my motors will not like that. I will likely end up with an air compensation system. It would be nice if the second stage regulator can keep the internal pressure higher than ambient. This will help the actuators </div><div>carry the load of the arm without using up lifting power from the actuator. </div><div>Hank</div>
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On Sunday, October 22, 2017, 4:46:33 PM MDT, Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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#yiv4776199767 </style></head><div><div class="yiv4776199767WordSection1"><p class="yiv4776199767MsoNormal"><span style="font-size:11.0pt;">Hi Hank,</span></p><p class="yiv4776199767MsoNormal"><span style="font-size:11.0pt;">Is the other end of the rod compensated? i.e. if the rod is say ¾” diameter then 50 lbs is eaten up at 113 psi approx. 250 ft depth. If it is 5/8” diam then you get to over 350 ft. Actuators with the shaft out both ends are of course perfectly balanced. Hugh</span></p><p class="yiv4776199767MsoNormal"><span style="font-size:11.0pt;"> </span></p><div class="yiv4776199767yqt3093356533" id="yiv4776199767yqt45792"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><p class="yiv4776199767MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;">From:</span></b><span lang="EN-US" style="font-size:10.0pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>hank pronk via Personal_Submersibles<br clear="none"><b>Sent:</b> Monday, 23 October 2017 5:32 AM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> [PSUBS-MAILIST] Fw: actuator</span></p></div></div><p class="yiv4776199767MsoNormal"> </p><div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;">Hi All,</span></p></div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;">Here is a picture of my first electric liner actuator that is fully submersible. The actuator can lift 50lbs at 1 inch per second approximately. The actuator cost me 50 dollars Canadian to make. This one has a 4 inch stroke and is well suited for the second sage on the manipulator. I can either air compensate or oil compensate the actuator. I can also put 160 psi inside permanently and use with no compensation to an undetermined depth. </span></p></div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;">Hank</span></p></div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div id="yiv4776199767ydp9a80509fyahoo_quoted_8993224162"><div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;">----- Forwarded Message -----</span></p></div><div><p class="yiv4776199767MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> hank pronk <<a rel="nofollow" shape="rect" ymailto="mailto:hankpronk@live.ca" target="_blank" href="mailto:hankpronk@live.ca">hankpronk@live.ca</a>></span></p></div><div><p class="yiv4776199767MsoNormal"><b><span style="font-size:10.0pt;">To:</span></b><span style="font-size:10.0pt;"> <a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a> <<a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>></span></p></div><div><p class="yiv4776199767MsoNormal"><b><span style="font-size:10.0pt;">Sent:</span></b><span style="font-size:10.0pt;"> Sunday, October 22, 2017, 10:24:59 AM MDT</span></p></div><div><p class="yiv4776199767MsoNormal"><b><span style="font-size:10.0pt;">Subject:</span></b><span style="font-size:10.0pt;"> Fw: actuator</span></p></div><div><p class="yiv4776199767MsoNormal"><span style="font-size:10.0pt;"> </span></p></div><div><div id="yiv4776199767ydp9a80509fyiv7951321062"><div><div id="yiv4776199767ydp9a80509fyiv7951321062divtagdefaultwrapper"><p><span style=""> </span></p><p class="yiv4776199767MsoNormal" style="margin-bottom:12.0pt;"><span style=""> </span></p><div><div align="center" class="yiv4776199767MsoNormal" style="text-align:center;"><span style=""></span><hr align="center" size="2" width="98%"></div><div id="yiv4776199767ydp9a80509fyiv7951321062divRplyFwdMsg"><p class="yiv4776199767MsoNormal"><b><span style="font-size:11.0pt;">From:</span></b><span style="font-size:11.0pt;"> xxx xxxxx <<a rel="nofollow" shape="rect" ymailto="mailto:mp13@live.ca" target="_blank" href="mailto:mp13@live.ca">mp13@live.ca</a>><br clear="none"><b>Sent:</b> October 22, 2017 10:23 AM<br clear="none"><b>To:</b> Hendrik<br clear="none"><b>Subject:</b> actuator</span><span style=""> </span></p><div><p class="yiv4776199767MsoNormal"><span style=""> </span></p></div></div><div><p class="yiv4776199767MsoNormal"><span style=""><img id="yiv4776199767ydp9a80509fyiv79513210622C532944-E0FF-4B06-A898-E182757741D3" border="0" width="180" height="320" src="cid:lrdm3xeNf8v4Jtr3r91s"></span></p></div></div></div></div></div></div></div></div></div></div></div></div></html></div><html><div class="yqt3093356533" id="yqt50569"><body>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></body></div></html></div>
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