<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Interesting ! I'll try roughing up my conductors.</DIV><DIV> </DIV><DIV>Got my ship to shore radio working today !</DIV><DIV> </DIV><DIV>I had to make a change in where I bring out my penetrators, originally they were coming out of my bottom viewport flange but it turns out there's a conflict with the propeller, so I'm moving the power cables up to the upper viewport where they'll have better clearance to feed the motor pod. </DIV><DIV> </DIV><DIV>Brian</DIV><DIV> </DIV><DIV><BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] potting epoxy<BR>Date: Sun, 12 Mar 2017 23:07:00 +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><SPAN>Brian,</SPAN></DIV><DIV><SPAN>before you do your electrical through hulls, have a look at this video of Doug's</SPAN></DIV><DIV dir="ltr"><SPAN>if you haven't already. He had lots of failures, with leaks, & pins extruding out of</SPAN></DIV><DIV dir="ltr"><SPAN>the epoxy. The solution in the end was to rough up the pins first before epoxying</SPAN></DIV><DIV dir="ltr"><SPAN>& coating with 3M 5200.</SPAN></DIV><DIV dir="ltr"><SPAN>Alan</SPAN></DIV><DIV dir="ltr"><SPAN><A href="https://www.youtube.com/watch?v=UDZQIDkWs4w">ROV Hull Components - Part 3 - Through Hull Electrical Connectors</A></SPAN></DIV><DIV dir="ltr"><SPAN><BR></SPAN></DIV><DIV><BR></DIV><DIV style="font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; max-width: 400px;" dir="ltr"> <A style="color: rgb(0, 0, 0) !important; text-decoration: none !important;" href="https://www.youtube.com/watch?v=UDZQIDkWs4w"> <TABLE style="max-width: 400px;" border="0" cellspacing="0" cellpadding="0"> <TBODY><TR> <TD width="400"> <TABLE width="100%" style="max-width: 400px;" border="0" cellspacing="0" cellpadding="0"> <TBODY><TR> <TD background="https://s.yimg.com/vv//api/res/1.2/tlKgadjWv4P8CAOqtWgg8g--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/UDZQIDkWs4w/hqdefault.jpg.cf.jpg" valign="top" style="background: url("https://s.yimg.com/vv//api/res/1.2/tlKgadjWv4P8CAOqtWgg8g--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://i.ytimg.com/vi/UDZQIDkWs4w/hqdefault.jpg.cf.jpg") no-repeat center / cover rgb(0, 0, 0); height: 200px; position: relative;" bgcolor="#000000"> <TABLE style="width: 100%;" border="0" cellspacing="0" cellpadding="0"> <TBODY><TR> <TD background="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png" valign="top" style="background: url("https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png") left top; height: 200px;" bgcolor="transparent"> <TABLE height="185" style="width: 100%; height: 185px; min-height: 185px;"> <TBODY><TR> <TD style="padding: 15px 0px 0px 15px; text-align: left; vertical-align: top;"> </TD> <TD style="padding: 15px 15px 0px 0px; text-align: right; vertical-align: top;"> <DIV></DIV> </TD> </TR> </TBODY></TABLE> </TD> </TR> </TBODY></TABLE> </TD> </TR> <TR> <TD> <TABLE align="center" style="background: rgb(255, 255, 255); border-width: 1px 1px 3px; border-style: solid; border-color: rgb(224, 228, 233) rgb(224, 228, 233) rgb(229, 45, 39); width: 95%; margin-top: -40px; margin-right: auto; margin-left: auto; position: relative; z-index: 2; max-width: 380px; border-image: none;" border="0" cellspacing="0" cellpadding="0"> <TBODY><TR> <TD style="padding: 16px 0px 16px 12px; vertical-align: top; background-color: rgb(255, 255, 255);"> <IMG height="32" style="border: 1px solid rgb(224, 228, 233); margin-top: 3px; min-width: 32px; border-image: none;" src="https://s.yimg.com/nq/storm/assets/enhancrV2/23/logos/youtube.png"> </TD> <TD style="padding: 16px 12px; width: 99%; vertical-align: middle;"> <H2 style="margin: 0px 0px 4px; line-height: 19px; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 16px;">ROV Hull Components - Part 3 - Through Hull Electrical Connectors</H2> <DIV style="color: rgb(153, 153, 153); line-height: 15px; font-size: 11px;">Starting to make some progress on our DIY high pressure through hull connectors, but this is an area that needs ...</DIV> </TD> <TD style="padding: 16px 12px 16px 0px; text-align: right;"> </TD> </TR> </TBODY></TABLE> </TD> </TR> </TBODY></TABLE> </TD> </TR> </TBODY></TABLE> </A></DIV><DIV><BR></DIV><DIV><SPAN><BR></SPAN></DIV><DIV><BR><BR></DIV><DIV style="display: block;"> <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"> <FONT face="Arial" size="2"> <HR size="1"> <B><SPAN style="font-weight: bold;">From:</SPAN></B> Brian Cox 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> Saturday, March 11, 2017 4:06 PM<BR> <B><SPAN style="font-weight: bold;">Subject:</SPAN></B> Re: [PSUBS-MAILIST] potting epoxy<BR> </FONT> </DIV> <DIV><BR><DIV><DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;"><DIV>Alan, you might be able to use some of that high temp epoxy for the high temp area of your lights.</DIV><DIV> </DIV><DIV>Brian</DIV><DIV><BR><BR>--- personal_submersibles@psubs.org wrote:<BR><BR>From: Alan via Personal_Submersibles <personal_submersibles@psubs.org><BR>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><BR>Subject: Re: [PSUBS-MAILIST] potting epoxy<BR>Date: Sat, 11 Mar 2017 14:30:40 +1300<BR><BR></DIV><DIV>Brian,</DIV><DIV>just had a look at the link to the potting epoxy.</DIV><DIV>Make sure you buy the SS (slow setting) version for larger volume casts.</DIV><DIV>The other versions seem designed for pouring over wiring & I can't see any</DIV><DIV>reference as to how thick you can pour it. </DIV><DIV>Most of that sort of stuff can crack if you pour it too thick & cure it too fast.</DIV><DIV>I used to use resins in art work & have had a number of thick sectioned </DIV><DIV>pours crack.</DIV><DIV>If you have already bought the other product; you could use it by doing an</DIV><DIV>initial pour or brush on, around the wires or pins & when dry, fill in with the</DIV><DIV>SS stuff.</DIV><DIV>Cheers Alan <BR><BR>Sent from my iPad</DIV><DIV><DIV><BR>On 10/03/2017, at 6:48 PM, Brian Cox via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR><BR></DIV><BLOCKQUOTE><DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;"><DIV>Hi All, </DIV><DIV> I got some potting epoxy from McMaster Carr, problem is, it's not really the best solution for our needs since it is actually a flexible epoxy, it would most likely extrude under pressure. Luckily in the package with the epoxy that I got, they sent me a lot of info and a catalogue showing all their epoxy products. They have some amazing epoxies ! Ceramic, machine-able epoxy, and the perfect epoxy for what I need, which is: potting for my electrical penetrators. This stuff (Duralco 4461 IP) is really great because it's very pourable and it has a heat tolerance of 500 F , that means I can safely solder my #4 stranded copper wire within a close proximity to the potted copper rods ! It's also ideal for electrical resistance. And low shrinkage . </DIV><DIV> </DIV><DIV>Here's a link to the 4461 IP :</DIV><DIV> </DIV><DIV><A href="http://www.cotronics.com/vo/cotr/ea_electricalresistant.htm">http://www.cotronics.com/vo/cotr/ea_electricalresistant.htm</A></DIV><DIV> </DIV><DIV>Brian</DIV><DIV> </DIV></DIV></DIV></BLOCKQUOTE></DIV><BLOCKQUOTE><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>_______________________________________________
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