<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_1454028589415_3948"><span id="yui_3_16_0_1_1454028589415_4088">Cliff,</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3947"><span id="yui_3_16_0_1_1454028589415_3946">I visited a factory where they made inflatables, & I would leave it to </span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_3966">the experts. The one I went to was quite happy to tailor make something</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_4124">for me. Those boats can really take a pounding, but you would have quite a bit of weight </span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_4283">sitting on it. You could make a rigid hull for it that was taken from a pattern</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_5492">of the R300 hull.</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_5415">It would be great for entry / exit from the sub. I learnt a lot from snoopy's dive at Islamorada.</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_5530">The sub sits in the water like an immovable rock & the boat bobs up & down next to it.</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_5607">You are in danger of busting a hole in your support boat getting too close. So entry &</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_5641">exit is difficult. We had to abandon a dive after hrs of towing as it was too dangerous</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_6878">to attempt getting in, in what wasn't very big seas. This was mainly from the danger of</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_7423">water coming in. If the sub was wrapped in an inflatable</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_6997">you would have that cushion against the boat & stability when you jumped on. </span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_7077">I had thought of making a pontoon boat that you could drive in to the back of</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_7295">that had twin outboards either side of the entry point. You could then tow your sub </span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_7460">& support boat on the same trailer.</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span id="yui_3_16_0_1_1454028589415_7508">Maybe Hank can whip one up?</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_3945"><span>Alan</span></div><br> <div class="qtdSeparateBR" id="yui_3_16_0_1_1454028589415_3843"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1454028589415_3961" 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_1454028589415_3960"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1454028589415_3959"> <div dir="ltr" id="yui_3_16_0_1_1454028589415_3963"> <font size="2" face="Arial" id="yui_3_16_0_1_1454028589415_3962"> <hr size="1" id="yui_3_16_0_1_1454028589415_7300"> <b id="yui_3_16_0_1_1454028589415_7462"><span style="font-weight:bold;" id="yui_3_16_0_1_1454028589415_7461">From:</span></b> Cliff Redus via Personal_Submersibles <personal_submersibles@psubs.org><br> <b id="yui_3_16_0_1_1454028589415_7464"><span style="font-weight: bold;" id="yui_3_16_0_1_1454028589415_7463">To:</span></b> Personal Submersibles General Discussion <personal_submersibles@psubs.org> <br> <b id="yui_3_16_0_1_1454028589415_7466"><span style="font-weight: bold;" id="yui_3_16_0_1_1454028589415_7465">Sent:</span></b> Friday, January 29, 2016 1:43 PM<br> <b id="yui_3_16_0_1_1454028589415_7468"><span style="font-weight: bold;" id="yui_3_16_0_1_1454028589415_7467">Subject:</span></b> Re: [PSUBS-MAILIST] R300 Dive at Lake Amistad<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1454028589415_3958"><br><div id="yiv9730054177"><div id="yui_3_16_0_1_1454028589415_3957"><div dir="ltr" id="yui_3_16_0_1_1454028589415_3956"><div id="yui_3_16_0_1_1454028589415_3955">Alan, I have thought about building this kind of system. Have you ever worked with materials like they make pontoon boats out of? I wonder how hard it would be to seal. Sounds like another project.</div><div id="yui_3_16_0_1_1454028589415_7297"><br clear="none"></div><div id="yui_3_16_0_1_1454028589415_7298">Cliff</div></div><div class="yiv9730054177gmail_extra" id="yui_3_16_0_1_1454028589415_7299"><br clear="none"><div class="yiv9730054177gmail_quote" id="yui_3_16_0_1_1454028589415_7548">On Thu, Jan 28, 2016 at 4:18 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote class="yiv9730054177gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" id="yui_3_16_0_1_1454028589415_7552"><div class="yiv9730054177yqt5118355989" id="yiv9730054177yqt64888"><div id="yui_3_16_0_1_1454028589415_7551"><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);" id="yui_3_16_0_1_1454028589415_7550"><div id="yui_3_16_0_1_1454028589415_7549"><span>Cliff,</span></div><div><span>I'm wondering if you could make or modify an inflatable pontoon.</span></div><div id="yui_3_16_0_1_1454028589415_7554"><span id="yui_3_16_0_1_1454028589415_7553">Sort of like an inflatable boat with the back board removed.</span></div><div id="yui_3_16_0_1_1454028589415_7556"><span id="yui_3_16_0_1_1454028589415_7555">Deflate it, drive on & inflate for transit.</span></div><div id="yui_3_16_0_1_1454028589415_7558"><span id="yui_3_16_0_1_1454028589415_7557">To a degree it would solve your free board issues when getting in & out,</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_7560"><span id="yui_3_16_0_1_1454028589415_7559">also it would act as a wave buffer stopping the waves flowing up the hull & in to the </span></div><div dir="ltr"><span>hatch.</span></div><div dir="ltr" id="yui_3_16_0_1_1454028589415_7562"><span id="yui_3_16_0_1_1454028589415_7561">Alan</span></div><br clear="none"> <div id="yui_3_16_0_1_1454028589415_7563"><br clear="none"><br clear="none"></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"> </font><hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Alec Smyth via Personal_Submersibles <<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"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<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"> <b><span style="font-weight:bold;">Sent:</span></b> Friday, January 29, 2016 10:25 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] R300 Dive at Lake Amistad<br clear="none"> </div> <div><br clear="none"><div><div><div dir="ltr">If you towed submerged, my guess is with the shape of your boat you could go a whole lot faster because you wouldn't be trapped in the trough of your bow wave. But on the other hand you would be above your comms speed, so slightly concerning if you were tearing along and had some issue.<div><br clear="none"></div><div>Best,</div><div><br clear="none">Alec</div></div><div><br clear="none"><div><div>On Thu, Jan 28, 2016 at 3:46 PM, Cliff Redus via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid;"><div dir="ltr"><div>Hugh, I am sure if I installed dive planes on the bow I could improve surface speed but might adversely affect ability to roll. I found on the last dive that I could use the vertical thrusters to generated a little lift and get anther couple of knots on the surface. To conserve batteries, I would probably tow the boat if I had to go more than a couple of miles. One of the mods I am going to test next time out is to make an attachment lug closer to the bottom of the bow I would screw this lug into the 2" forward MBT flood port. I think towing from this lower location should counter act the bow wave to some degree. If I could get the tow speed up to 5-6 knots, that would make a big difference in tow time.</div><span><font color="#888888"></font></span><div><br clear="none"></div><div>Cliff</div><div><br clear="none"></div><div><br clear="none"></div></div><div><div><div><br clear="none"><div>On Thu, Jan 28, 2016 at 1:55 PM, Hugh Fulton via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid;"><div lang="EN-US"><div><div><span style="color:rgb(31,73,125);">Cliff, Congratulations on the dive and success of the remodeling.<u></u><u></u></span></div><div><span style="color:rgb(31,73,125);">I was interested in your comments of the restrictions of speed on the surface due to the bow wave/visibility. Makes sense.<u></u><u></u></span></div><div><span style="color:rgb(31,73,125);">Can you not put on dive/surface planes to assist lift on the surface and then increase speed. Could try on a model in a pool.<u></u><u></u></span></div><div><span style="color:rgb(31,73,125);">Regards, Hugh<u></u><u></u></span></div><div><span style="color:rgb(31,73,125);"><u></u> <u></u></span></div><div><span style="color:rgb(31,73,125);"><u></u> <u></u></span></div><div style="border-width:1pt medium medium;border-style:solid none none;border-color:rgb(181,196,223) currentColor currentColor;padding:3pt 0cm 0cm;"><div><b><span>From:</span></b><span> Personal_Submersibles [mailto:<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org" target="_blank" href="mailto:personal_submersibles-bounces@psubs.org">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>Cliff Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Friday, 29 January 2016 3:41 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] R300 Dive at Lake Amistad<u></u><u></u></span></div></div><div><u></u> <u></u></div><div><div><div>Alan, operation of the four Minn-Kota thrusters was a joy. Maneuverability is an order magnitude better than before plus they are super quite. I use a foot control that you tilt forward to increase speed of stern thrusters and if you tilt the foot control back you can reverse the stern thrusters. With this I now have brakes. I have a 3-axis joy stick which I use to control pitch, roll and yaw through PLC. I programed three different vertical thruster modes. The first is full control in which starboard-port movement generates roll, the second in which I switch them over to momentary switches for up and down movement and have them locked together and a third in which I have them back on the joystick but lock out roll. I use the first mode when I want to fly underwater with full pitch, roll and yaw control. I use the second mode for vertical ascent or decent and the third mode which gives yaw and pitch movement but locks out roll movement. On the surface I have to be careful not to apply full speed to aft thrusters or they will cavitate. On the ascent from the 154 ft dive, I could see out the viewport a steady stream of bubbles coming from the pressure reducing regulator used to pressure compensate the thrusters. Also, after the dive I analyzed the logged data and confirmed that during each dive air was been supply to the thrusters for pressure compensation. I have not done so yet but I plan on disassembling one of the thrusters to confirm it had no water encroachment during the dive. I am really happy with the Minn-Kota thrusters. After a full day on the water, I had a SOC of 90%. With my previous drive train, my batteries would be at a 50% SOC for same number of hours. As to boat length, I did end of shortening the boat by 2.5 ft. I also shortened the trailer by 3 ft. As the pressure hull is shaped like a coke bottle, I could not cut much more off the stern FRP cowling.<u></u><u></u></div></div><div><div><u></u> <u></u></div></div><div><div>After I do a 400 ft unmanned dive to qualify the boat to 300 ft, then I am going to find some clear water. How you doing for garage space? I sure you could find me some nice clear water in New Zealand!<u></u><u></u></div></div><div><div><u></u> <u></u></div></div><div><div>Cliff<u></u><u></u></div></div></div><div><div><u></u> <u></u></div><div><div>On Wed, Jan 27, 2016 at 9:40 PM, Alan James via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<u></u><u></u></div><div><div><div><div style="background:white;"><span style="color:black;">Thanks Cliff,<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">congratulations on getting the refit finished.<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">How did you feel it operated with the 4 Minn kotas. <u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">What was the steering like on surface & diving.<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">I notice you didn't shorten the sub. What were the reasons<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">for that, I thought that tale section would just be an<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">appendage now.<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">That was a shame about the visibility. Wait till you get in to some really<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">clear water, you will be blown away.<u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;">Cheers Alan<u></u><u></u></span></div></div><div style="background:white;"><span style="color:black;"><u></u> <u></u></span></div><div><div style="background:white;margin-bottom:12pt;"><span style="color:black;"><u></u> <u></u></span></div></div><div><div><div><div><div align="center" style="background:white;text-align:center;"><span style="color:black;"></span><hr align="center" width="100%" size="1"></div><div style="background:white;"><b><span style="color:black;">From:</span></b><span style="color:black;"> Cliff Redus via Personal_Submersibles <<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"><b>To:</b> Personal Submersibles General Discussion <<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"><b>Sent:</b> Thursday, January 28, 2016 11:07 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] R300 Dive at Lake Amistad</span><span style="color:black;"><u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;"><u></u> <u></u></span></div><div><div><div><div style="background:white;"><span style="color:black;"> <a rel="nofollow" shape="rect" target="_blank" href="https://www.youtube.com/watch?v=Ojwoedzn8ms"><span style="color:rgb(0,102,204);">Lake Amistad 2016</span></a> is a link to YouTube video of dive last weekend. This is the deepest dive to date with the boat. Got the thruster electrical issue from my last dive sorted out. The objective in diving this lake is that it is the deepest in Texas and most of the time, the clearest. Having said that, last weekend visibility was bad. Surface vis was 6ft, lost all light at 80 ft and zero visibilty at 154 ft. Still if was fun to get the deep dive in. <u></u><u></u></span></div></div><div><div style="background:white;"><span style="color:black;"><u></u> <u></u></span></div></div><div><div style="background:white;"><span style="color:black;">Clif<u></u><u></u></span></div></div></div></div><div style="background:white;margin-bottom:12pt;"><span style="color:black;"><br clear="none">_______________________________________________<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"><br clear="none"><u></u><u></u></span></div></div></div></div></div></div></div><div style="margin-bottom:12pt;"><br clear="none">_______________________________________________<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><u></u><u></u></div></div><div><u></u> <u></u></div></div></div></div><br clear="none">_______________________________________________<br clear="none">
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