<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5052">Hi Tim,</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5123">I am trying to make up my own brushless thruster.</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5124">About 90% of the thruster manufacturers use brushless motors,</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5126">however the cheapest price I've found is about $3,500 for thruster</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5175">kort nozzle & controller. This seems axcessive as I can buy a 1500W</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5217">brushless motor & controller for round $100-. It's just a matter of tracking down </span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5438">the right motor. I am trying to find something around 1500W but with revs of less than</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5435">3000 rpm. Adding a gear box to get the propeller shaft revs down is an option I</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5434">am hoping to avoid.</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span>Also the voltage needs to be up near 48V to reduce the amps. </span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span id="yui_3_16_0_1_1414642962771_5629">There seems to be a problem getting hold of ready made electrial penetraters </span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span>suitable for high amps.</span></div><div dir="ltr" id="yui_3_16_0_1_1414642962771_5053"><span>Cheers Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1414642962771_5057"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1414642962771_5056"> <div dir="ltr" id="yui_3_16_0_1_1414642962771_5055"> <hr size="1" id="yui_3_16_0_1_1414642962771_5054"> <font size="2" face="Arial" id="yui_3_16_0_1_1414642962771_5060"> <b id="yui_3_16_0_1_1414642962771_5059"><span style="font-weight:bold;" id="yui_3_16_0_1_1414642962771_5058">From:</span></b> T Novak via Pers-onal_Submersibles <personal_submersibles@psubs.org><br> <b id="yui_3_16_0_1_1414642962771_5431"><span style="font-weight: bold;" id="yui_3_16_0_1_1414642962771_5430">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b id="yui_3_16_0_1_1414642962771_5442"><span style="font-weight: bold;" id="yui_3_16_0_1_1414642962771_5441">Sent:</span></b> Thursday, October 30, 2014 2:46 PM<br> <b id="yui_3_16_0_1_1414642962771_5174"><span style="font-weight: bold;" id="yui_3_16_0_1_1414642962771_5173">Subject:</span></b> Re: [PSUBS-MAILIST] (no subject)<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1414642962771_5061"><br><div id="yiv0660100292"><style>#yiv0660100292 #yiv0660100292 --
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#yiv0660100292 </style><div id="yui_3_16_0_1_1414642962771_5064"><div class="yiv0660100292WordSection1" id="yui_3_16_0_1_1414642962771_5063"><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5062"><span style="font-size:11.0pt;">Alan,</span></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5167"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1414642962771_5440"> </span></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5066"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1414642962771_5065">Any luck with marine bow thrusters? They are around 1500 watts, 12 volts, and come in a sealed, but not pressurized, housing.</span></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5067"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1414642962771_5433"> </span></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5068"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1414642962771_5432">Tim</span></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5069"><span style="font-size:11.0pt;"> </span></div><div class="qtdSeparateBR"><br><br></div><div class="yiv0660100292yqt7648301653" id="yiv0660100292yqt25931"><div id="yui_3_16_0_1_1414642962771_5073"><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm;" id="yui_3_16_0_1_1414642962771_5072"><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5071"><b><span lang="EN-US" style="font-size:11.0pt;">From:</span></b><span lang="EN-US" style="font-size:11.0pt;" id="yui_3_16_0_1_1414642962771_5070"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br clear="none"><b>Sent:</b> October-27-14 9:36 PM<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] (no subject)</span></div></div></div><div class="yiv0660100292MsoNormal" id="yui_3_16_0_1_1414642962771_5074"> </div><div id="yui_3_16_0_1_1414642962771_5076"><div id="yiv0660100292yui_3_16_0_1_1414470128018_4824"><div class="yiv0660100292MsoNormal" style="background:white;" id="yui_3_16_0_1_1414642962771_5075"><span style="">Ken,</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4286"><div class="yiv0660100292MsoNormal" style="background:white;" id="yui_3_16_0_1_1414642962771_5078"><span style="" id="yui_3_16_0_1_1414642962771_5077">haven't heard from you for a while.</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4280"><div class="yiv0660100292MsoNormal" style="background:white;" id="yui_3_16_0_1_1414642962771_5080"><span style="" id="yui_3_16_0_1_1414642962771_5079">I am trying to track down a suitable DC brushless motor around 1500W for a thruster.</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4282"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">Preferably I don't want to gear it down, so I need an output speed of less than 3000rpm.</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">The only brushless motors I can find with low rpm are the RC outrunner motors that</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">you might find at Hobby King. I am looking at playing round with a larger motor &</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">running it at 1/2 it's maximum voltage. They seem so small compared to their brushed</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">counterpart that I don't think I will be disadvantaged size wise by doing this.</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">Most of these motors seem to be low voltage, high amps, & I would prefer something operating</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">on around 48V. </span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">Any words of wisdom or product recommendation here thanks.</span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4283"><div class="yiv0660100292MsoNormal" style="background:white;"><span style="">Alan</span></div></div><div class="yiv0660100292MsoNormal" style="background:white;"><span style=""> </span></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_4561"><div id="yiv0660100292yui_3_16_0_1_1414470128018_4560"><div id="yiv0660100292yui_3_16_0_1_1414470128018_4559"><div align="center" class="yiv0660100292MsoNormal" style="text-align:center;background:white;"><span style=""></span><hr align="center" size="1" width="100%"></div><div class="yiv0660100292MsoNormal" style="background:white;"><b id="yiv0660100292yui_3_16_0_1_1414470128018_5686"><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Ken Martindale 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>><br clear="none"><b>To:</b> '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"><b>Sent:</b> Monday, October 27, 2014 1:20 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] (no subject)</span><span style=""></span></div></div><div id="yiv0660100292yui_3_16_0_1_1414470128018_5094"><div class="yiv0660100292MsoNormal" style="background:white;"><span style=""><br clear="none">Water is compressible, look how the submarine "Ben Franklin" did it. Water<br clear="none">is just not very compressible.<br clear="none"><br clear="none">Ken Martindale<br clear="none"><br clear="none">-----Original Message-----<br clear="none">From: Personal_Submersibles [mailto:<a rel="nofollow" shape="rect" id="yiv0660100292yui_3_16_0_1_1414470128018_5430" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br clear="none">On Behalf Of Marc de Piolenc via Personal_Submersibles<br clear="none">Sent: Sunday, October 26, 2014 8:11 PM<br clear="none">To: <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">Subject: Re: [PSUBS-MAILIST] (no subject)<br clear="none"><br clear="none">Compressing water will be quite some trick.<br clear="none"><br clear="none">Marc<br clear="none"><br clear="none">Ducted fans: <a rel="nofollow" shape="rect" target="_blank" href="http://massflow.archivale.com/">http://massflow.archivale.com/ </a>Archivale catalog:<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.archivale.com/catalog">http://www.archivale.com/catalog </a>Polymath weblog:<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.archivale.com/weblog">http://www.archivale.com/weblog </a>Translations (ProZ profile):<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.proz.com/profile/639380">http://www.proz.com/profile/639380</a><br clear="none">Translations (BeWords profile): <a rel="nofollow" shape="rect" target="_blank" href="http://www.bewords.com/Marc-dePiolenc">http://www.bewords.com/Marc-dePiolenc</a><br clear="none"><br clear="none"><br clear="none">On 10/26/2014 11:06 PM, Graham Bayliss via Personal_Submersibles wrote:<br clear="none">><br clear="none">> Hi Hank<br clear="none">><br clear="none">> I agree a jet drive is the way to go did you not think that a jet ski <br clear="none">> drive was to small and would only drive a small craft. I intend to <br clear="none">> build a larger jet drive and compress the water. This will be easy and <br clear="none">> add power to the system the jet drive from a jet ski would not drive a <br clear="none">> sub but I am certain I can overcome the problems by building a larger jet<br clear="none">drive and a compressor.<br clear="none">> Thank you for your input and I will keep you informed as the project <br clear="none">> un folds.<br clear="none">><br clear="none">> Graham<br clear="none">><br clear="none">> -----Original Message-----<br clear="none">> From: Personal_Submersibles <br clear="none">> [mailto:<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br clear="none">> On Behalf Of hank pronk via Personal_Submersibles<br clear="none">> Sent: 26 October 2014 12:42<br clear="none">> To: Personal Submersibles General Discussion<br clear="none">> Subject: Re: [PSUBS-MAILIST] (no subject)<br clear="none">><br clear="none">><br clear="none">> Graham,<br clear="none">> In the world of marine jet drive it is well known that jet drive takes <br clear="none">> two times the horse power to do the same job. Jet drive is well <br clear="none">> suited to a craft that needs a shallow draft. I think you will find <br clear="none">> it very complicated to control and it will be very inefficient. I have <br clear="none">> been down this road, I love the concept but abandoned it. If you go <br clear="none">> forward may I suggest you start with a jet drive. It is not a simple <br clear="none">> part to replicate. The impeller tolerances are critical. I have a <br clear="none">> jet unit on the shelf I could donate to your project. The jet is from <br clear="none">> a jet ski. I would consider a single rear motor on a full gimbal.<br clear="none">> Hank --------------------------------------------<br clear="none">> On Sun, 10/26/14, Graham Bayliss 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>> wrote:<br clear="none">><br clear="none">> Subject: [PSUBS-MAILIST] (no subject)<br clear="none">> To: "'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: Sunday, October 26, 2014, 7:39 AM<br clear="none">><br clear="none">> #yiv9417249292<br clear="none">> #yiv9417249292 --<br clear="none">><br clear="none">> _filtered #yiv9417249292 {panose-1:2 4 5 3 5 4 6 3 2 4;}<br clear="none">> _filtered #yiv9417249292 {font-family:Calibri;panose-1:2 15<br clear="none">> 5 2 2 2 4 3 2 4;}<br clear="none">> #yiv9417249292<br clear="none">> #yiv9417249292 p.yiv9417249292MsoNormal, #yiv9417249292 <br clear="none">> li.yiv9417249292MsoNormal, #yiv9417249292 div.yiv9417249292MsoNormal<br clear="none">> {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}<br clear="none">> #yiv9417249292 a:link, #yiv9417249292<br clear="none">> span.yiv9417249292MsoHyperlink<br clear="none">> {color:blue;text-decoration:underline;}<br clear="none">> #yiv9417249292 a:visited, #yiv9417249292 <br clear="none">> span.yiv9417249292MsoHyperlinkFollowed<br clear="none">> {color:purple;text-decoration:underline;}<br clear="none">> #yiv9417249292 span.yiv9417249292EmailStyle17<br clear="none">> {color:#1F497D;}<br clear="none">> #yiv9417249292 .yiv9417249292MsoChpDefault<br clear="none">> {}<br clear="none">> _filtered #yiv9417249292 {margin:72.0pt 72.0pt 72.0pt 72.0pt;}<br clear="none">> #yiv9417249292 div.yiv9417249292WordSection1<br clear="none">> {}<br clear="none">> #yiv9417249292 Hi I am near the end of my build of my k350 and have<br clear="none">> started to look at new designs I am interested in building a flyer <br clear="none">> sub and have come up with a design which will include a vectored <br clear="none">> motor drive this will enable my flyer to hover and stop where ever I <br clear="none">> want. I have designed a motor unit which will drive a fan type <br clear="none">> propeller as an intake this will force water to the rear of the unit<br clear="none">> where it is compressed then it is forced into ducting which will <br clear="none">> take the water to four nozzles on the side of the craft. The nozzles <br clear="none">> are able to turn three hundred and sixty degrees both side are <br clear="none">> independent of one another so rolls will be achievable. The reason <br clear="none">> for a vectored motor is you only need one motor source and one power <br clear="none">> pack this will ease the maintenance and increase the enjoyment of <br clear="none">> using your sub. I am interested in the clubs thought of this kind of <br clear="none">> design. Graham<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"><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></span></div><div><div class="yiv0660100292MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style=""> </span></div></div><div id="yiv0660100292yqtfd15346"><div class="yiv0660100292MsoNormal" style="background:white;"><span style=""><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"><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></span></div></div><div class="yiv0660100292MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style=""> </span></div></div></div></div></div></div></div></div></div><br><div class="yqt7648301653" id="yqt68535">_______________________________________________<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"></div><br><br></div> </div> </div> </div></body></html>