<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1450572876293_11371"><span>Pete,</span></div><div id="yui_3_16_0_1_1450572876293_11369"><span id="yui_3_16_0_1_1450572876293_11370">I ran a 2000W motor in fresh water with a propeller but no housing.</span></div><div id="yui_3_16_0_1_1450572876293_11368"><span id="yui_3_16_0_1_1450572876293_11367">It worked well but was worse for wear afterward with a bit of rust</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span id="yui_3_16_0_1_1450572876293_11375">showing + the bearings seemed a bit rougher. From memory there</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span>was rust on the magnets.</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span id="yui_3_16_0_1_1450572876293_11467">Salt water is a lot better conductor than fresh, so you would get current</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span id="yui_3_16_0_1_1450572876293_11580">running from the + to the - terminal & bi-passing the wire windings.</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span id="yui_3_16_0_1_1450572876293_11632">I think it would be more trouble than it was worth to waterproof &</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span id="yui_3_16_0_1_1450572876293_11762">corrosion proof the motor. And then there is the sand in the bearings.</span></div><div dir="ltr" id="yui_3_16_0_1_1450572876293_11366"><span>Cheers Alan</span></div><br> <div class="qtdSeparateBR" id="yui_3_16_0_1_1450572876293_11260"><br id="yui_3_16_0_1_1450572876293_11587"><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1450572876293_11232" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1450572876293_11231"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1450572876293_11230"> <div dir="ltr" id="yui_3_16_0_1_1450572876293_11229"> <font size="2" face="Arial" id="yui_3_16_0_1_1450572876293_11228"> <hr size="1" id="yui_3_16_0_1_1450572876293_11398"> <b><span style="font-weight:bold;">From:</span></b> Pete Niedermayr via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, December 20, 2015 1:38 PM<br> <b id="yui_3_16_0_1_1450572876293_11259"><span style="font-weight: bold;" id="yui_3_16_0_1_1450572876293_11258">Subject:</span></b> Re: [PSUBS-MAILIST] ROV opportunity<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1450572876293_11233"><br>These thrusters are interesting in that they are made with stainless/ plastic and aluminum. they are open to the water and water actually runs thru them and cools them. They claim that they can even handle some amount of sand particles in the water. They are very small but perfect for ROV use. <br><br>Could this be done with thruster sized motors.I saw Doug Jackson doing the same thing with his ROV motors.<br><br>Pete<br><br><br>--------------------------------------------<br>On Fri, 12/18/15, Douglas Suhr via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1450572876293_11351">personal_submersibles@psubs.org</a>> wrote:<br><br> Subject: Re: [PSUBS-MAILIST] ROV opportunity<br> To: "Personal Submersibles General Discussion" <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org" id="yui_3_16_0_1_1450572876293_11350">personal_submersibles@psubs.org</a>><br> Date: Friday, December 18, 2015, 6:16 PM<br> <br> Sounds<br> like a cool opportunity if you've got the willingness<br> and time Brian. This past summer dad and I were on the hunt<br> for a missing outboard motor on a Canadian lake. We had a<br> camera but no ROV. We actually ended up cutting a 15 foot<br> sapling to use as a camera pole. Depth was only 17 − 20<br> feet so the sapling worked pretty well as a camera handle<br> from the boat (and we found the motor), but a controllable<br> ROV would have made things much easier.<br> It looks like those guys make some<br> nice parts for ROV projects. The technical (software) aspect<br> scares me a bit, but that's only because I am<br> electronically challenged. ~ Douglas S. <br> On Fri, Dec 18, 2015 at<br> 11:30 AM, Brian Cox via Personal_Submersibles <<a ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br> wrote:<br> Hi<br> All, In my search<br> for some Soda Sorb I stumbled on to a dive shop down in<br> Hollywierd , the shop owner does a lot of business with<br> the studios and wants me to build him a ROV camera<br> platform which has certain capabilities that are not<br> available at the present time. I'm thinking about<br> trying to come up with something for him. I found these<br> nifty thrusters made by these highly motivated kids. <br> Link: <a href="https://www.bluerobotics.com/%C2%A0These" target="_blank">https://www.bluerobotics.com/ These</a><br> thrusters are interesting in that they are made with<br> stainless/ plastic and aluminum. they are open to the water<br> and water actually runs thru them and cools them. They<br> claim that they can even handle some amount of sand<br> particles in the water. They are very small but perfect<br> for ROV use. Brian<br> Cox<br> _______________________________________________<br> <br> Personal_Submersibles mailing list<br> <br> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br> <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> <br> <br> -----Inline Attachment Follows-----<br> <br> _______________________________________________<br> Personal_Submersibles mailing list<br> <a ymailto="mailto:Personal_Submersibles@psubs.org" href="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>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="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></body></html>