<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><span></span></div><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Thanks Brian,</div><div>all a bit bigger & more expensive than what I'm after.</div><div>I bought a brushless outrunner 1500W motor for $50-. & will play around with that.</div><div>Next step, if I can't find another solution, is to buy a 3000W & run it at half speed.</div><div>I guess I will need to couple it to a stainless propeller shaft.</div><div>Have been looking at frameless motors also.</div><div>Alan</div><div><br><br>Sent from my iPad</div><div><br>On 29/10/2014, at 4:17 am, Brian Cox via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Arial, sans-serif; font-size:10pt;"><div>Alan,</div><div> Take a look at these guys, this is where I'm getting my motors.</div><div> </div><div><a href="http://www.thunderstruck-ev.com/">http://www.thunderstruck-ev.com/</a></div><div> </div><div>Brian<br><br>--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br><br>From: Alan James via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>Subject: Re: [PSUBS-MAILIST] (no subject)<br>Date: Tue, 28 Oct 2014 04:35:53 +0000 (UTC)<br><br></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);"><div dir="ltr"><span>Ken,</span></div><div dir="ltr"><span>haven't heard from you for a while.</span></div><div dir="ltr"><span>I am trying to track down a suitable DC brushless motor around 1500W for a thruster.</span></div><div dir="ltr"><span>Preferably I don't want to gear it down, so I need an output speed of less than 3000rpm.</span></div><div dir="ltr"><span>The only brushless motors I can find with low rpm are the RC outrunner motors that</span></div><div dir="ltr"><span>you might find at Hobby King. I am looking at playing round with a larger motor &</span></div><div dir="ltr"><span>running it at 1/2 it's maximum voltage. They seem so small compared to their brushed</span></div><div dir="ltr"><span>counterpart that I don't think I will be disadvantaged size wise by doing this.</span></div><div dir="ltr"><span>Most of these motors seem to be low voltage, high amps, & I would prefer something operating</span></div><div dir="ltr"><span>on around 48V. </span></div><div dir="ltr"><span>Any words of wisdom or product <span><span>recommendation</span></span> here thanks.</span></div><div dir="ltr"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Ken Martindale 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> Monday, October 27, 2014 1:20 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] (no subject)<br> </font> </div> <div><br>Water is compressible, look how the submarine "Ben Franklin" did it. Water<br>is just not very compressible.<br><br>Ken Martindale<br><br>-----Original Message-----<br>From: Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br>On Behalf Of Marc de Piolenc via Personal_Submersibles<br>Sent: Sunday, October 26, 2014 8:11 PM<br>To: <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a><br>Subject: Re: [PSUBS-MAILIST] (no subject)<br><br>Compressing water will be quite some trick.<br><br>Marc<br><br>Ducted fans: <a href="http://massflow.archivale.com/">http://massflow.archivale.com/ </a>Archivale catalog:<br><a href="http://www.archivale.com/catalog">http://www.archivale.com/catalog </a>Polymath weblog:<br><a href="http://www.archivale.com/weblog">http://www.archivale.com/weblog </a>Translations (ProZ profile):<br><a href="http://www.proz.com/profile/639380">http://www.proz.com/profile/639380</a><br>Translations (BeWords profile): <a href="http://www.bewords.com/Marc-dePiolenc">http://www.bewords.com/Marc-dePiolenc</a><br><br><br>On 10/26/2014 11:06 PM, Graham Bayliss via Personal_Submersibles wrote:<br>><br>> Hi Hank<br>><br>> I agree a jet drive is the way to go did you not think that a jet ski <br>> drive was to small and would only drive a small craft. I intend to <br>> build a larger jet drive and compress the water. This will be easy and <br>> add power to the system the jet drive from a jet ski would not drive a <br>> sub but I am certain I can overcome the problems by building a larger jet<br>drive and a compressor.<br>> Thank you for your input and I will keep you informed as the project <br>> un folds.<br>><br>> Graham<br>><br>> -----Original Message-----<br>> From: Personal_Submersibles <br>> [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>]<br>> On Behalf Of hank pronk via Personal_Submersibles<br>> Sent: 26 October 2014 12:42<br>> To: Personal Submersibles General Discussion<br>> Subject: Re: [PSUBS-MAILIST] (no subject)<br>><br>><br>> Graham,<br>> In the world of marine jet drive it is well known that jet drive takes <br>> two times the horse power to do the same job. Jet drive is well <br>> suited to a craft that needs a shallow draft. I think you will find <br>> it very complicated to control and it will be very inefficient. I have <br>> been down this road, I love the concept but abandoned it. If you go <br>> forward may I suggest you start with a jet drive. It is not a simple <br>> part to replicate. The impeller tolerances are critical. I have a <br>> jet unit on the shelf I could donate to your project. The jet is from <br>> a jet ski. I would consider a single rear motor on a full gimbal.<br>> Hank --------------------------------------------<br>> On Sun, 10/26/14, Graham Bayliss via Personal_Submersibles <br>> <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br>><br>> Subject: [PSUBS-MAILIST] (no subject)<br>> To: "'Personal Submersibles General Discussion'"<br>> <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>> Received: Sunday, October 26, 2014, 7:39 AM<br>><br>> #yiv9417249292<br>> #yiv9417249292 --<br>><br>> _filtered #yiv9417249292 {panose-1:2 4 5 3 5 4 6 3 2 4;}<br>> _filtered #yiv9417249292 {font-family:Calibri;panose-1:2 15<br>> 5 2 2 2 4 3 2 4;}<br>> #yiv9417249292<br>> #yiv9417249292 p.yiv9417249292MsoNormal, #yiv9417249292 <br>> li.yiv9417249292MsoNormal, #yiv9417249292 div.yiv9417249292MsoNormal<br>> {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;}<br>> #yiv9417249292 a:link, #yiv9417249292<br>> span.yiv9417249292MsoHyperlink<br>> {color:blue;text-decoration:underline;}<br>> #yiv9417249292 a:visited, #yiv9417249292 <br>> span.yiv9417249292MsoHyperlinkFollowed<br>> {color:purple;text-decoration:underline;}<br>> #yiv9417249292 span.yiv9417249292EmailStyle17<br>> {color:#1F497D;}<br>> #yiv9417249292 .yiv9417249292MsoChpDefault<br>> {}<br>> _filtered #yiv9417249292 {margin:72.0pt 72.0pt 72.0pt 72.0pt;}<br>> #yiv9417249292 div.yiv9417249292WordSection1<br>> {}<br>> #yiv9417249292 Hi I am near the end of my build of my k350 and have<br>> started to look at new designs I am interested in building a flyer <br>> sub and have come up with a design which will include a vectored <br>> motor drive this will enable my flyer to hover and stop where ever I <br>> want. I have designed a motor unit which will drive a fan type <br>> propeller as an intake this will force water to the rear of the unit<br>> where it is compressed then it is forced into ducting which will <br>> take the water to four nozzles on the side of the craft. The nozzles <br>> are able to turn three hundred and sixty degrees both side are <br>> independent of one another so rolls will be achievable. The reason <br>> for a vectored motor is you only need one motor source and one power <br>> pack this will ease the maintenance and increase the enjoyment of <br>> using your sub. I am interested in the clubs thought of this kind of <br>> design. Graham<br>><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><div><br><br></div><div><br><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div><br><br></div> </div> </div> </div>_______________________________________________
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