<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Thanks Hank,</div><div>I only looked at these couplings yesterday, but it seemed that the bearings would be exposed</div><div>to water. I could be wrong.</div><div>On the Technadyne site it mentions that the magnetic coupling assembly dismantles easily</div><div>to change the bearings, so I'm wondering if these are a weak point in the system.</div><div>Alan</div><div><br><br>Sent from my iPad</div><div><br>On 14/10/2013, at 1:21 AM, hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:tahoma, new york, times, serif;font-size:12pt"><div style="RIGHT: auto"><span style="RIGHT: auto">Alan,</span></div>
<div style="RIGHT: auto"><span style="RIGHT: auto">If you look on ebay under water pump magnetic coupled , you will see several examples even some 24v pumps. </span></div>
<div style="RIGHT: auto"><span style="RIGHT: auto">Your right, nice thrusters! and the price is not bad.<var id="yui-ie-cursor"></var></span></div>
<div style="RIGHT: auto"><span style="RIGHT: auto">Hank</span></div>
<div style="FONT-SIZE: 16px; FONT-FAMILY: tahoma, new york, times, serif; RIGHT: auto; COLOR: rgb(0,0,0); FONT-STYLE: normal; BACKGROUND-COLOR: transparent"><br style="RIGHT: auto"></div>
<div style="FONT-SIZE: 12pt; FONT-FAMILY: tahoma, new york, times, serif">
<div style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman, new york, times, serif">
<div style="RIGHT: auto" dir="ltr">
<div class="hr" style="FONT-SIZE: 0px; BORDER-TOP: #ccc 1px solid; HEIGHT: 0px; BORDER-RIGHT: #ccc 1px solid; BORDER-BOTTOM: #ccc 1px solid; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 5px 0px; BORDER-LEFT: #ccc 1px solid; LINE-HEIGHT: 0; PADDING-RIGHT: 0px" readonly="true" contenteditable="false"></div><font size="2" face="Arial"><b><span style="FONT-WEIGHT: bold">From:</span></b> Alan <<a href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</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> Monday, October 14, 2013 1:29:15 AM<br><b><span style="FONT-WEIGHT: bold">Subject:</span></b> Re: [PSUBS-MAILIST] Thrusters, Air & Diesel Musings<br></font></div>
<div class="y_msg_container"><br>
<div id="yiv690109865">
<div>
<div>This Indonesian site looks interesting. For example,</div>
<div>500 watt DC brushless thruster with magnetic coupling for $2500. </div>
<div>Love these sites that have prices listed.</div>
<div><span style="FONT-SIZE: 15px; WHITE-SPACE: nowrap; LINE-HEIGHT: 19px"><a href="http://robomarine.com/thrusters.html" rel="nofollow" target="_blank">http://robomarine.com/thrusters.html</a></span></div>
<div><span style="FONT-SIZE: 15px; WHITE-SPACE: nowrap; LINE-HEIGHT: 19px">Alan</span></div>
<div><br><br>Sent from my iPad</div>
<div><br>On 13/10/2013, at 8:19 PM, "Hugh Fulton" <<a href="mailto:hc.fulton@gmail.com" rel="nofollow" target="_blank" ymailto="mailto:hc.fulton@gmail.com">hc.fulton@gmail.com</a>> wrote:<br><br></div>
<blockquote type="cite">
<div>
<style><!--
#yiv690109865
_filtered #yiv690109865 {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}
_filtered #yiv690109865 {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}
#yiv690109865
#yiv690109865 p.yiv690109865MsoNormal, #yiv690109865 li.yiv690109865MsoNormal, #yiv690109865 div.yiv690109865MsoNormal
{margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman", "serif";}
#yiv690109865 a:link, #yiv690109865 span.yiv690109865MsoHyperlink
{color:blue;text-decoration:underline;}
#yiv690109865 a:visited, #yiv690109865 span.yiv690109865MsoHyperlinkFollowed
{color:purple;text-decoration:underline;}
#yiv690109865 p.yiv690109865MsoAcetate, #yiv690109865 li.yiv690109865MsoAcetate, #yiv690109865 div.yiv690109865MsoAcetate
{margin:0cm;margin-bottom:.0001pt;font-size:8.0pt;font-family:"Tahoma", "sans-serif";}
#yiv690109865 span.yiv690109865EmailStyle18
{font-family:"Calibri", "sans-serif";color:#1F497D;}
#yiv690109865 span.yiv690109865BalloonTextChar
{font-family:"Tahoma", "sans-serif";}
#yiv690109865 .yiv690109865MsoChpDefault
{font-size:10.0pt;}
_filtered #yiv690109865 {margin:72.0pt 72.0pt 72.0pt 72.0pt;}
#yiv690109865 div.yiv690109865WordSection1
{}
--></style>
<div class="yiv690109865WordSection1">
<div class="yiv690109865MsoNormal"><span style="FONT-SIZE: 11pt; COLOR: #1f497d">Hi All, </span></div>
<div class="yiv690109865MsoNormal"><span style="FONT-SIZE: 11pt; COLOR: #1f497d">Does anyone know where to get a magnetic coupling similar to the ones being used by Tecnadyne.</span></div>
<div class="yiv690109865MsoNormal"><span style="FONT-SIZE: 11pt; COLOR: #1f497d">Regards, Hugh</span></div>
<div>
<div class="yiv690109865MsoNormal"><span lang="EN-NZ" style="FONT-SIZE: 11pt; COLOR: #1f497d"> </span></div></div>
<div class="yiv690109865MsoNormal"><span style="FONT-SIZE: 11pt; COLOR: #1f497d"> </span></div>
<div>
<div style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0cm; PADDING-TOP: 3pt; PADDING-LEFT: 0cm; BORDER-LEFT: medium none; PADDING-RIGHT: 0cm">
<div class="yiv690109865MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org" rel="nofollow" target="_blank" ymailto="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Alan<br><b>Sent:</b> Monday, 14 October 2013 4:25 p.m.<br><b>To:</b> Personal Submersibles General Discussion<br><b>Subject:</b> Re: [PSUBS-MAILIST] Thrusters, Air & Diesel Musings</span></div></div></div>
<div class="yiv690109865MsoNormal"> </div>
<div>
<div class="yiv690109865MsoNormal">Hi Hank,</div></div>
<div>
<div class="yiv690109865MsoNormal">With regard to the off the shelf, water pump, magnetic coupler.</div></div>
<div>
<div class="yiv690109865MsoNormal">I wonder if the thrust bearings would be a problem in our application.</div></div>
<div>
<div class="yiv690109865MsoNormal">On a water pump you would have maybe a belt driven pulley on the shaft </div></div>
<div>
<div class="yiv690109865MsoNormal">of the coupler & no need for thrust bearings. Whereas in our application with the propeller</div></div>
<div>
<div class="yiv690109865MsoNormal">exerting force down the shaft they are needed, & if used would be exposed to fresh or sea water unless you used some sort of seal. And sealing it would defeat the purpose for it's application in the first place, wouldn't it?</div></div>
<div>
<div class="yiv690109865MsoNormal">Alan</div></div>
<div>
<div class="yiv690109865MsoNormal"> </div></div>
<div>
<div class="yiv690109865MsoNormal"><br><br>Sent from my iPad</div></div>
<div>
<div class="yiv690109865MsoNormal" style="MARGIN-BOTTOM: 12pt">Defeats<br>On 12/10/2013, at 4:37 PM, hank pronk <<a href="mailto:hanker_20032000@yahoo.ca" rel="nofollow" target="_blank" ymailto="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>> wrote:</div></div>
<blockquote style="MARGIN-BOTTOM: 5pt; MARGIN-TOP: 5pt">
<div>
<div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Joe,</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">I am a lover of hydraulic anything. I am sure you can go hyd all around with no trouble. Problem is efficiency, they will rob 25%. If you want range, then its no good. If you launch from a ship and look around then it would not matter maybe. With seals the way they are now and magnetic couplers, electric still wins.</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">I was looking on e bay and there is a magnetic coupler for a water pump that could be modified for our purposes. I like the idea but I have no real need to improve a sub that is perfect :-) Also my budget is hurtin bad.</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Hank</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><b><span style="FONT-SIZE: 10pt; COLOR: black">From:</span></b><span style="FONT-SIZE: 10pt; COLOR: black"> Joe Perkel <<a href="mailto:josephperkel@yahoo.com" rel="nofollow" target="_blank" ymailto="mailto:josephperkel@yahoo.com">josephperkel@yahoo.com</a>><br><b>To:</b> Psubbers Mailist <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" target="_blank" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br><b>Sent:</b> Saturday, October 12, 2013 6:17:20 PM<br><b>Subject:</b> [PSUBS-MAILIST] Thrusters, Air & Diesel Musings</span><span style="COLOR: black"></span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div>
<div id="yiv690109865">
<div>
<div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Some quick questions / observations / musing come to mind as I sit here editing videos.</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">It looks to me like Alvin's thrusters all have a 90 deg drive arrangement like yacht bow thrusters. Some of these off the shelf units are hydraulic, but way over powered for a Delta / Gamma sized sub. There are however, lots of little hydraulic motors out there, a slew of them. Ive also seen drive components, reductions, etc, that simply were not available to George. How much trouble would it be to go hydraulic all around? </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">If DC motors must be used, in my view then the single must have improvement to the T-Rex design is the addition of a mag coupling.</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Alecs experience has me rethinking self sufficiency. It would be nice to charge the batteries and the HP tanks independent of a surface boat, eliminating the need to raft alongside in swells. All this convenience means a "Tours 66" type of arrangement. But Tours 66 weighed in at 10 tons.</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Everything is now downsized like that little AC unit I posted,.. take a look at this marine gen-set (note dimensions) <a href="http://www.nextgenerationpower.com/Info/Support/3-5Specs.pdf" rel="nofollow" target="_blank">http://www.nextgenerationpower.com/Info/Support/3-5Specs.pdf</a> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Hmm, could this not be enclosed in the hull during a build, or otherwise slung longways down the hatch into a 42" hull? No prop shaft and seals, (you still get towed) but independent re-charge capability for both batteries and HP air with an equally downsized compressor!?! </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">So the question of the day is,...</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black">Is a comfy air conditioned & self sufficient research capable PSUB for sport diving in Florida / Caribbean waters, a realistic goal at around 3.5 tons and $8-$10 lb?</span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div>
<div>
<div class="yiv690109865MsoNormal" style="BACKGROUND: white"><span style="COLOR: black"> </span></div></div></div></div></div>
<div class="yiv690109865MsoNormal" style="MARGIN-BOTTOM: 12pt; BACKGROUND: white"><span style="COLOR: black"><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br></span></div></div></div></div></div></div></blockquote>
<blockquote style="MARGIN-BOTTOM: 5pt; MARGIN-TOP: 5pt">
<div>
<div class="yiv690109865MsoNormal">_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></div></div></blockquote>
<div class="yiv690109865MsoNormal"><br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature database 8912 (20131013) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com/" rel="nofollow" target="_blank">http://www.eset.com/</a></div></div><br><br>__________ Information from ESET NOD32 Antivirus, version of virus signature database 8912 (20131013) __________<br><br>The message was checked by ESET NOD32 Antivirus.<br><br><a href="http://www.eset.com/" rel="nofollow" target="_blank">http://www.eset.com/</a><br></div></blockquote>
<blockquote type="cite">
<div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div></div></div></div></div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></body></html>