<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_1_1454896963912_2943"><span>Jon,</span></div><div id="yui_3_16_0_1_1454896963912_2735" dir="ltr"><span id="yui_3_16_0_1_1454896963912_2764">There is a very easy and inexpensive way to make your penetrators. You rotate your sub so the hole in the sub is vertical and level. Then use casting resin, just make a rig that holds the threaded rods in place in the bore. The bottom of the rig has to seal as good as possible. Then just pour in high compressive casting resin. I use a product that has a 17,000 psi compressive strength. You can cast in a reservoir as well to encapsulate the wire connections. Or you can do it all in one pour.</span></div><div id="yui_3_16_0_1_1454896963912_2735" dir="ltr"><span>Hank</span></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Saturday, February 6, 2016 7:37 PM, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv1115973820"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div><span>Jon,</span></div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5088"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5089">for a start you could look at something like this boat through hull with 0-ring.</span></div><div dir="ltr" id="yiv1115973820yui_3_16_0_1_1454810770545_5046"><a rel="nofollow" shape="rect" id="yiv1115973820yui_3_16_0_1_1454810770545_5052" target="_blank" href="http://www.hotboat.com/frm/showthread.php?t=4421" style="background-color:rgb(255, 255, 255);">http://www.hotboat.com/frm/showthread.php?t=4421</a><br clear="none"></div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5046">Or just google through hull, o-ring or face seal. Image search is good.</div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5046">However it may be better to cut a thread if the diameter hole matches a standard tap.</div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5046">You can google hole diameters for taps.</div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5046">If you went for the through hull perpetrator you may find that by the time you thread a fitting in to that,</div><div dir="ltr" id="yiv1115973820yui_3_16_0_1_1454810770545_5046">that the hole isn't big enough to fit your wires through, so backward engineer.</div><div dir="ltr" id="yiv1115973820yui_3_16_0_1_1454810770545_5046">However Hank seems the best option:)</div><div dir="ltr" id="yiv1115973820yui_3_16_0_1_1454810770545_5046">Alan</div><div id="yiv1115973820yui_3_16_0_1_1454810770545_5046"><br clear="none"></div><div class="yiv1115973820qtdSeparateBR" id="yiv1115973820yui_3_16_0_1_1454810770545_5057"><br clear="none"><br clear="none"></div><div class="yiv1115973820yahoo_quoted" id="yiv1115973820yui_3_16_0_1_1454810770545_5051" style="display:block;"> <div id="yiv1115973820yui_3_16_0_1_1454810770545_5050" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div id="yiv1115973820yui_3_16_0_1_1454810770545_5049" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="yiv1115973820yqt8283403181" id="yiv1115973820yqt55880"><div dir="ltr" id="yiv1115973820yui_3_16_0_1_1454810770545_5048"> <font id="yiv1115973820yui_3_16_0_1_1454810770545_5047" size="2" face="Arial"> </font><hr id="yiv1115973820yui_3_16_0_1_1454810770545_5149" size="1"> <b><span style="font-weight:bold;">From:</span></b> Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Sunday, February 7, 2016 10:44 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Through hull penetrator<br clear="none"> </div> <div class="yiv1115973820y_msg_container" id="yiv1115973820yui_3_16_0_1_1454810770545_5234"><br clear="none"><div id="yiv1115973820"><div id="yiv1115973820yui_3_16_0_1_1454810770545_5239">
<div class="yiv1115973820moz-cite-prefix" id="yiv1115973820yui_3_16_0_1_1454810770545_5238"><br clear="none">
Thanks Alan. I think Doug would have had much better luck had he
used threaded rod instead of wire. His method is essentially what
I am looking at doing however I would use a tapered end as you
suggested as well as threaded rod for the conductors to give the
epoxy something to grip onto. Emile presented an interesting
design some time ago in which he press fit conductors through
nylon or some other solid plastic material. My bigger issue from
a DIY perspective is that I will require some machining no matter
what method I choose. The K-600 uses a smooth bore through-hull
that must be sealed on the outside face by an o-ring. See
attached photo for type of penetrator I need.<br clear="none">
<br clear="none">
<div class="yiv1115973820yqt6335489424" id="yiv1115973820yqtfd01770"><br clear="none">
On 2/6/2016 3:07 PM, Alan James via Personal_Submersibles wrote:<br clear="none">
</div></div><div class="yiv1115973820yqt6335489424" id="yiv1115973820yqtfd77853">
<blockquote type="cite">
</blockquote></div></div><div class="yiv1115973820yqt6335489424" id="yiv1115973820yqtfd81018"><div id="yiv1115973820yui_3_16_0_1_1454810770545_5233"><div><span></span></div>
<div id="yiv1115973820yui_3_16_0_1_1454810770545_5232">
<div id="yiv1115973820yui_3_16_0_1_1454810770545_5231" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;">
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1447461477147_2814">Jon,</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5237">I sent this
email out last year as an idea for using castable rubber
in a electrical penetrator.</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5367">Hank is
already doing something similar minus the castable rubber.</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5368">The idea is to
buy a bronze reducer fitting of appropriate size from a
marine supplier & machine</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5369">an o-ring
grove in it. The bronze fitting Preferably has </span>a
conical reduction shape ( not shown in diagram ). The
reducer compresses the epoxy under pressure in to the narrow
area & stops it extruding through. Doug was having all
sorts of problems epoxying pins straight through a fitting
without reduction.</div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815">In this iteration I
epoxy the wires & sheath in to the reducer. You could
use pins which would</div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5370">be more in
line with G. L. as if the wires are sheared water could
run through the individual</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5236">wire sheaths,
but bend the pins. I looked closely at how my subconn
penetrators were made, & they mold a thin </span>rubber
sheath over the cable about an inch back from where it
enters the penetrator. So as</div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5235">the wiring
sheath compresses under pressure this rubber sheath moves
with it. The drawing isn't the greatest but I can
elaborate if interested. I have a 3000 psi test cylinder
to test these but haven't got round to it.</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span><br clear="none">
</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2815"><span id="yiv1115973820yui_3_16_0_1_1454810770545_5371"> As this has
created a lot of interest, I thought I'd follow up with a</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2797"><span id="yiv1115973820yui_3_16_0_1_1447461477147_2816">couple of drawings of
my through hull idea :) (Attached at bottom.)</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_2838">I am using a common
reducer fitting to butt or key the epoxy.</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3353">There are standard
reducer fittings with o-rings.</span></div>
<div id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3334">I am going to
silicone over the outer part of the fitting & along
the</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3417">cable jacket. Then
mold over this with the castable rubber to </span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span>tidy
it up. </span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3601">The theory is the
silicone will compress under pressure on to</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3397">the jacket (which
should itself compress), & seal the jacket better</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span>than
just epoxy.</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3123">I looked at a long
video of Doug Jackson making through hulls</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3122">for his rov by
epoxying in brass pins. They were failing badly in most
cases.</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_2790"><span id="yiv1115973820yui_3_16_0_1_1447461477147_3121">I will never trust
epoxy again.</span></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_3166"><a rel="nofollow" shape="rect" id="yiv1115973820yui_3_16_0_1_1447461477147_3159" target="_blank" href="https://www.youtube.com/watch?v=UDZQIDkWs4w"></a><a rel="nofollow" shape="rect" class="yiv1115973820moz-txt-link-freetext" target="_blank" href="https://www.youtube.com/watch?v=UDZQIDkWs4w">https://www.youtube.com/watch?v=UDZQIDkWs4w</a></div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_3166">Regards
Alan</div>
<div dir="ltr" id="yiv1115973820yui_3_16_0_1_1447461477147_3166"><br clear="none">
</div>
<br clear="none">
</div>
</div>
<br clear="none">
</div></div></div><br clear="none"><div class="yiv1115973820yqt6335489424" id="yiv1115973820yqtfd79161">_______________________________________________<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><br clear="none"></div><br clear="none"><br clear="none"></div></div> </div> </div> </div></div></div></div><br><div class="yqt8283403181" id="yqt36536">_______________________________________________<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></div></body></html>