<html><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_1429255202276_5392" dir="ltr"><span>Jon,</span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5527">with the concern of the sheath being penetrated & water running down the wiring,</span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5529">I wonder if squirting a low viscosity glue like some of the locktite products, down the</span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5533">wiring from the point where you connect the wiring to the threaded rod, would help.</span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">Would need to be a flexible glue to deal with the flex of the wiring.</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">There is a good section on hull penetrations in the Busby book in case you have overlooked that.<br></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5715">On my ambient the motors are air compensated & I have the ambient air pressure from regulators</span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5937">& my wiring running down the same plastic hose. The wiring is potted inside a stainless tube with a </span></div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr"><span id="yui_3_16_0_1_1429255202276_5985">flange on it. </span>On one end of the tube is a barb connection to which the hose is connected. The</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">tube fits in to the blue globe cable gland & the tubes flange stops the tube from being forced through</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">the cable gland under pressure. It is easy to just loosen the Blue Globe & pull the wiring out when needed.</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">The blue globe part of the "blue globe" cable gland is unique & designed for pressure so beware of imitations. </div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">Emile tested one to 3000psi.</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">Cliff was going through this exercise with his Minnkotas. I wonder how he has progressed???</div><div id="yui_3_16_0_1_1429255202276_5392" dir="ltr">Alan</div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1429255202276_5735"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1429255202276_5734"> <div dir="ltr" id="yui_3_16_0_1_1429255202276_5733"> <hr size="1" id="yui_3_16_0_1_1429255202276_5747"> <font size="2" face="Arial" id="yui_3_16_0_1_1429255202276_5739"> <b id="yui_3_16_0_1_1429255202276_5738"><span style="font-weight:bold;" id="yui_3_16_0_1_1429255202276_5737">From:</span></b> Jon Wallace 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> Friday, April 17, 2015 10:23 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] minn-kota cabling to hull<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1429255202276_6470"><br><div id="yiv3703197853"><div id="yui_3_16_0_1_1429255202276_6473">
<div class="yiv3703197853moz-cite-prefix" id="yui_3_16_0_1_1429255202276_6472"><br clear="none">
Alan,<br clear="none">
<br clear="none">
The best approach is to use threaded rod with the potting, if
possible. My question is probably better stated in the context of
whether air trapped between a multi-wire cable and the surrounding
sheath is an issue to be concerned about. Some cables have a good
tight sheath but others such as CAT-5 is pretty sloppy.<br clear="none">
<br clear="none">
A potential concern of the blue globe gland since it seals around
the cable sheath is what happens if the sheath gets damaged and
cut underwater. Water pressure will allow creep to flow between
the wires and sheath bypassing the gland. However the same would
be true of a home-made potted penetrator as well. What type of
inflow should we expect from such a breach? Minor?<br clear="none">
<br clear="none">
Jon<br clear="none">
<br clear="none">
<br clear="none">
<br clear="none">
On 4/16/2015 4:46 PM, Alan James via Personal_Submersibles wrote:<br clear="none">
</div>
<blockquote type="cite">
<div class="qtdSeparateBR"><br><br></div><div class="yiv3703197853yqt2743778447" id="yiv3703197853yqt77671"><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="yiv3703197853yui_3_16_0_1_1429213666446_4548"><span>Jon,</span></div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550"><span id="yiv3703197853yui_3_16_0_1_1429213666446_4549">I noted that the lights
on "I think" a dual DW at Nuytco</span></div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550"><span id="yiv3703197853yui_3_16_0_1_1429213666446_4592">had oil in the wiring
tubes to the lights, which were a clear plastic.</span></div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">I
compensated a linear actuator & didn't strip the wires
inside the potting.</div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">I filled it
with WD40, & it just ran out between the epoxy & the
wires when</div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">I tipped it
upside down. No pressure applied. </div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">I think it
was Hank that suggested untwisting the wires so the potting
mix </div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">can get
around them. On the through hulls, Carsten & Emile are
using</div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">blue globe
cable glands with one outside the hull & another inside
for</div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">double
security.</div>
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4550">Alan</div>
<br clear="none">
<div id="yiv3703197853yui_3_16_0_1_1429213666446_4568" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;">
<div id="yiv3703197853yui_3_16_0_1_1429213666446_4567" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;">
<div dir="ltr" id="yiv3703197853yui_3_16_0_1_1429213666446_4566">
<hr id="yiv3703197853yui_3_16_0_1_1429213666446_4565" size="1"> <font id="yiv3703197853yui_3_16_0_1_1429213666446_4688" face="Arial" size="2"> <b id="yiv3703197853yui_3_16_0_1_1429213666446_4770"><span id="yiv3703197853yui_3_16_0_1_1429213666446_4769" style="font-weight:bold;">From:</span></b>
Jon Wallace via Personal_Submersibles
<a rel="nofollow" shape="rect" class="yiv3703197853moz-txt-link-rfc2396E" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a><br clear="none">
<b><span style="font-weight:bold;">To:</span></b>
Personal Submersibles General Discussion
<a rel="nofollow" shape="rect" class="yiv3703197853moz-txt-link-rfc2396E" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> <br clear="none">
<b id="yiv3703197853yui_3_16_0_1_1429213666446_4768"><span id="yiv3703197853yui_3_16_0_1_1429213666446_4767" style="font-weight:bold;">Sent:</span></b>
Friday, April 17, 2015 12:06 AM<br clear="none">
<b><span style="font-weight:bold;">Subject:</span></b>
[PSUBS-MAILIST] minn-kota cabling to hull<br clear="none">
</font> </div>
<div class="yiv3703197853y_msg_container" id="yiv3703197853yui_3_16_0_1_1429213666446_4687"><br clear="none">
<br clear="none">
I think Emile had details of potting the minn-kota.
Anyone know where <br clear="none">
this might be located?<br clear="none">
<br clear="none">
Anyone waterproofing their cabling by oil-compensation
through a poly <br clear="none">
tube? If I remember correctly, Aquarius uses this method
for the <br clear="none">
electrical wires to the lights and vacuum.<br clear="none">
<br clear="none">
Jon<br clear="none">
<br clear="none">
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