<div dir="ltr">I like the idea! ~ Douglas S. </div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 8, 2016 at 9:41 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"><div><span>Doug,</span></div><div dir="ltr"><span>to adapt it to a submarine you would need to do something like </span></div><div dir="ltr"><span>house the disk end in a 3" diameter piece of plastic tubing.</span></div><div dir="ltr"><span>You could attach a fine nylon line to the back of the disk & to</span></div><div dir="ltr"><span>a hole in the pipe to stop the disk drifting out & tangling somewhere.</span></div><div dir="ltr"><span>Make sure there is enough slack in the nylon that it doesn't interfere with</span></div><div dir="ltr"><span>the disks range of movement.</span></div><div dir="ltr"><span>We could probably adapt this concept & come up with a submarine specific</span></div><div dir="ltr"><span>item. Maybe a clear tube with the disk inside pushing against a spring, with the</span></div><div dir="ltr"><span>disk moving along markings on the tube.</span></div><div dir="ltr"><span>Alan </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 size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold">From:</span></b> Douglas Suhr via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>><br> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> <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><div class="h5"> <div><br><div><div><div dir="ltr">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><br clear="none"><div>On Mon, Feb 8, 2016 at 6:15 PM, Alan James via Personal_Submersibles <span dir="ltr"><<a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none"><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><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" href="http://www.knotstick.com/" style="color:rgb(25,106,212);background-color:rgb(255,255,255)" target="_blank">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><font color="#888888"></font></span><div dir="ltr">Alan</div></div></div></div><br clear="none">_______________________________________________<br clear="none">
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