<html><head></head><body><p dir="ltr">It has been six or seven years since I last bought one - a 3DM-GX2 which ran about $1400 at that time.</p>
<p dir="ltr">Sean<br>
</p>
<br><br><div class="gmail_quote">On June 28, 2016 9:21:25 AM MDT, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div style="font-family:Arial, sans-serif; font-size:10pt;"><div>Wow, those look really cool Sean ! Probably not cheap !</div><div> </div><div>Brian<br /><br />--- personal_submersibles@psubs.org wrote:<br /><br />From: "Sean T. Stevenson via Personal_Submersibles" <personal_submersibles@psubs.org><br />To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br />Subject: Re: [PSUBS-MAILIST] gyro compass<br />Date: Mon, 27 Jun 2016 21:44:49 -0600<br /><br /></div><p dir="ltr">https://www.microstrain.com/inertial/nodes</p></div>
<p dir="ltr">Sean<br />
<br /><br /></p><div>On June 27, 2016 9:10:25 PM MDT, Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<blockquote style="margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;">
<div style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Hank, do you know if there are any cheap inertial navigation systems out there? I would thing the robotics people might have something like that .</div><div> </div><div>Brian<br /><br />--- personal_submersibles@psubs.org wrote:<br /><br />From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br />To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br />Subject: Re: [PSUBS-MAILIST] gyro compass<br />Date: Mon, 27 Jun 2016 21:06:25 +0000 (UTC)<br /><br /></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span>Its Aliens, Alan,</span></div><div dir="ltr"><span>I tried it inside the sub and it tries to work but is totally off. I did squeeze it with the body off to simulate depth and !
it
worked fine in the shop being squeezed. </span></div><div dir="ltr"><span>Hank</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: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font face="Arial" size="2"> On Monday, June 27, 2016 2:39 PM, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br /></font></div> <br /><br /> <div><div><div><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);"><div><span>Hank,</span></div><div><span>I think your theory about the UFO is looking good at this stage.</span></div><div><span>It didn't work at 10ft, that's about 5psi; So have you tried squeezing</span></div><div
dir="ltr"><span>it in various places to replicate that? Or what about mounting it</span></div><div dir="ltr"><span>inside the hull on a pole in the center of the dome area, as far</span></div><div dir="ltr"><span>as possible from the hull. If it worked it would eliminate any Alien</span></div><div dir="ltr"><span>influences & indicate that the water pressure was the problem.</span></div><div>Alan<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><div dir="ltr"> <font face="Arial" size="2"> </font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></blockquote></div><hr size="1" /> <b><span style="font-weight: bold;">From:</span></b> hank pronk via Personal_Submersibles
<personal_submersibles@psubs.org><br /> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discuss!
ion
<personal_submersibles@psubs.org> <br /> <b><span style="font-weight: bold;">Sent:</span></b> Monday, June 27, 2016 11:26 PM<br /> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] gyro compass<br /> <div><br /><div><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span>Alan,</span></div><div dir="ltr"><span>I took my compass apart and it is perfect, it works perfect in my shop etc. I put it in the lake and it is stuck on N most of the time. </span>Occasionally it will move. I think there is some mineral interference or an old sunken UFO messing with it. </div><div dir="ltr">Hank</div> <div><br /><br /></div><div 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><div dir="ltr"><font face="Arial" size="2"> On Monday, June 27, 2016 5:11 AM, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br /></font></div> <br /><br /> <div><div><div><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);"><div><span>Hank, </span></div><div dir="ltr"><span>why would you want a turn & bank indicator above some sought of compass?</span></div><div dir="ltr"><span>There are a multitude of inexpensive underwater compasses that scuba divers use,</span></div><div dir="ltr"><span>although they may be a bit small to be read at a distance. Possibly there is some</span></div><div dir="ltr"><span>issue with the compression of the oil stopping your compass from functioning?</span></div><div dir="ltr"><span>Mounting the
compass outside the hull seems to be standard practice & I haven't</span></div><div dir="ltr"><span>heard of any failing. Perhaps someone with previous issues with them could comment.</span></div><div dir="ltr"><span>Alan</span></div><div dir="ltr"><span></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><div dir="ltr"> <font face="Arial" size="2"> </font><hr size="1" /> <b><span style="font-weight: bold;">From:</span></b> hank pronk 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> Monday, June 27, 2016
10:37 PM<br /> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] gyro compass<br /> </div> <div><br /><div><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span>Kieth,</span></div><div dir="ltr"><span>I stand corrected, a turn and bank indicator is just the ticket and tons of them on </span>eBay for cheap. I was focusing on compass only, but these indicators are much cheaper and more available. </div><div dir="ltr">Thanks' for the tip</div><div dir="ltr">Hank</div> <div><br /><br /></div><div 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;">
<div><div dir="ltr"><font face="Arial" size="2"> On Sunday, June 26, 2016 6:25 PM, hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br /></font></div> <br /><br /> <div><div><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div><span>Hi Kieth,</span></div><div><span>My understanding is the aircraft units are noisy, I assume that is the air units. They are hard to find in guaranteed working condition for a price that works for me. If you know of any for a descent price-please let me know.</span></div><div><span>Hank</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: 12px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;
font-size: 16px;"> <div><div dir="ltr"><font face="Arial" size="2"> On Sunday, June 26, 2016 6:16 PM, k6fee via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br /></font></div> <br /><br /> <div><div><div><div>Hank, </div><div><br /></div><div>Try using a gyro compass ( or atifical horizon) from an aircraft. They sre either air, vaccum or electric powered.</div><div><br /></div><div>Keith </div><div><br /></div><div><br /></div><div><br /></div><div><div style="color: rgb(87, 87, 87); font-size: 85%;">Sent from my Verizon, Samsung Galaxy smartphone</div></div><div><br /></div><div><div style="color: rgb(0, 0, 0); font-size: 100%;"><div>-------- Original message --------</div><div>From: hank pronk via Personal_Submersibles <personal_submersibles@psubs.org> </div><div>Date: 6/26/16 4:11 PM (GMT-08:00) </div><div>To: Personal Submersibles General Discussion <personal_submersibles@psubs.org> </div><div>Subject: [PSUBS-MAILIST!
] gyro
compass </div><div><br /></div></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><div dir="ltr">I am going to try to make a gyro compass, looks doable. I don't care about what direction I am going-I just want to go in a strait line. I will point the sub in the direction I want to go at the surface, then turn on the gyro and sink. Then I can just follow the gyro.</div><div>Hank</div></div></div></div></div><br /><div>_______________________________________________<br />Personal_Submersibles mailing list<br /><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br /><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br /></div><br /><br /></div></div> </div> </div> </div></div></div></div><br
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