<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_1454984778626_2958"><span>Doug,</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2956"><span id="yui_3_16_0_1_1454984778626_2957">to adapt it to a submarine you would need to do something like </span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_2842">house the disk end in a 3" diameter piece of plastic tubing.</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_2959">You could attach a fine nylon line to the back of the disk & to</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_2977">a hole in the pipe to stop the disk drifting out & tangling somewhere.</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_2994">Make sure there is enough slack in the nylon that it doesn't interfere with</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span>the disks range of movement.</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_3058">We could probably adapt this concept & come up with a submarine specific</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_3110">item. Maybe a clear tube with the disk inside pushing against a spring, with the</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_3168">disk moving along markings on the tube.</span></div><div dir="ltr" id="yui_3_16_0_1_1454984778626_2841"><span id="yui_3_16_0_1_1454984778626_3073">Alan </span></div><div class="qtdSeparateBR" id="yui_3_16_0_1_1454984778626_2840"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1454984778626_2881" 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_1454984778626_2880"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1454984778626_2879"> <div dir="ltr" id="yui_3_16_0_1_1454984778626_2878"> <font size="2" face="Arial" id="yui_3_16_0_1_1454984778626_2882"> <hr size="1" id="yui_3_16_0_1_1454984778626_2883"> <b><span style="font-weight:bold;">From:</span></b> Douglas Suhr 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> Tuesday, February 9, 2016 3:07 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Knotstick<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1454984778626_3174"><br><div id="yiv4758015554"><div id="yui_3_16_0_1_1454984778626_3176"><div dir="ltr" id="yui_3_16_0_1_1454984778626_3175">Cool concept, thanks for sharing Alan. I'll have to look into one of those, I like the simplest way of doing things! ~ Douglas S. </div><div class="yiv4758015554gmail_extra" id="yui_3_16_0_1_1454984778626_3177"><br clear="none"><div class="yiv4758015554gmail_quote" id="yui_3_16_0_1_1454984778626_3178">On Mon, Feb 8, 2016 at 6:15 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="yiv4758015554gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="yiv4758015554yqt3070522949" id="yiv4758015554yqt82911"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div>I posted this on the 7th but didn't see it.</div><div dir="ltr">Apologies if you already received it.</div><div dir="ltr">Anyone looked at or used these.</div><div dir="ltr">They record speed.</div><div dir="ltr"><a rel="nofollow" shape="rect" target="_blank" href="http://www.knotstick.com/" style="color:rgb(25,106,212);background-color:rgb(255,255,255);">http://www.knotstick.com/</a><br clear="none"></div><div>They look like they could be mounted by a side view port</div><div dir="ltr">to show speed. I had to google images of them to see how they were</div><div dir="ltr">constructed. It's a disk on a string that drags through the water. It is attached </div><div dir="ltr">to a stainless spring in a cylinder & as the spring is extended it pushes a white sleeve</div><div dir="ltr">along a calibration marked on the cylinder to indicate speed.</div><span class="yiv4758015554HOEnZb"><font color="#888888"></font></span><div dir="ltr">Alan</div></div></div></div><br clear="none">_______________________________________________<br clear="none">
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