<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>The air bubble to the surface is a time honored practice for sub ops. Much cheaper than all the electronic tracking gear on Alvin.</div><div>Vance<br><br>Sent from my iPhone</div><div><br>On Mar 20, 2014, at 7:57 PM, Alan James <<a href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt"><div><span>Thanks Hank,</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>I was thinking it would come together fast. Might be a sod to get apart again.</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>Maybe you could use a smaller magnetic coupler for other functions on a submarine.</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande',
sans-serif; background-color: transparent; font-style: normal;"><span>For instance it could be the axle in a drum of cord that the emergency buoy or an ascent</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>warning buoy could be released with. The power of the magnet would stop the drum from</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>rotating & releasing line, but if you pulled the magnet out of the housing slightly you could</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande',
sans-serif; background-color: transparent; font-style: normal;"><span>control the release speed of the buoy & avoid a birds nest in the line. If you had a drive on it</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>it could be set to slip against the buoancy of he buoy but reel in line if there was slack.</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>I've thought that sending up a buoy before ascending would be a good way of warning your tender</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida
Grande', sans-serif; background-color: transparent; font-style: normal;"><span>or any other pleasure craft. The tourist subs in Hawaii send up a huge bubble of air. The tender spots</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>this & radios an acknowledgement that they are clear before the ascent.</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style: normal;"><span>Alan</span></div><div style="color: rgb(0, 0, 0); font-size: 18.88888931274414px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; background-color: transparent; font-style:
normal;"><span><br></span></div><div><br></div> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font size="2" face="Arial"> <b><span style="font-weight:bold;">From:</span></b> hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, March 21, 2014 10:07 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] magnetic coupler<br> </font> </div> <div class="y_msg_container"><br><div id="yiv9761899388"><div><div style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica
Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"><div><span>Alan,</span></div><div><span>The oil filter looking part is the barrier that keeps the water out of the sub. There is a magnet inside the barrier that is connected to the propeller shaft. When you assemble this thing you need to be real carful. The first time I slid the magnet assemblies together I almost lost a finger. If the propeller gets jammed, the magnet drive would slip like a clutch. It would take a lot though, my magnet drive is bigger than it needs to be. The propeller assembly can still drop off in an emergency, that is all the same still. I am pretty happy with the whole conversion, it can not leak! </span></div><div><span>Hank</span></div><div class="yiv9761899388yahoo_quoted" style="display: block;"> <br clear="none"> <br clear="none"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial,
'Lucida Grande', sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div class="yiv9761899388yqt7692838342" id="yiv9761899388yqt39792"><div dir="ltr"> <font face="Arial" size="2"> On Thursday, March 20, 2014 1:04:29 PM, Alan James <<a href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</a>> wrote:<br clear="none"> </font> </div> <div class="yiv9761899388y_msg_container"><div id="yiv9761899388"><div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 14pt; background-color: rgb(255, 255, 255);"><div><span>Hi Hank,</span></div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><span style="background-color:transparent;">The part that looks like an oil filter is the covering over a rotating
magnet?</span><br clear="none"></div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><span>The second part is the full assembly that fits over the magnet (oil filter) portion.</span></div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">What sort of force is involved when you put together or pull the two magnetic portions apart?</div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">If you jammed the propellor on something the internal magnet would still rotate</div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">but can it pull apart separating the propellor & it's obstruction from the coupler?</div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">I've added a link to the coupler.</div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"></div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><span><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/projects/1327775450/gammarestoration/">http://www.psubs.org/projects/1327775450/gammarestoration/</a><br clear="none"></span></div><div class="yiv9761899388yui_3_13_0_ym1_8_1395340824503_34" style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">Alan</div><div><br clear="none"></div> <div style="font-family:HelveticaNeue,;"> <div style="font-family:HelveticaNeue,;"> <div class="yiv9761899388yqt9129988319" id="yiv9761899388yqt77669"><div dir="ltr"> <div class="yiv9761899388hr" style="margin:5px 0px;padding:0px;border:1px solid rgb(204, 204, 204);height:0px;line-height:0;font-size:0px;"></div>
<font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> hank pronk <<a href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Thursday, March 20, 2014 10:26 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> [PSUBS-MAILIST] magnetic coupler<br clear="none"> </font> </div> <div class="yiv9761899388y_msg_container"><br clear="none"><div id="yiv9761899388"><div><div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><div>Anyone that may be interested, I posted a couple of pictures of my magnetic drive coupler assembly. It is kinda chunky at about 9in long. I can NOT overpower
the coupler by hand, it is incredible how strong it is. I pressure tested the assembly to 625 psi for one hr with no issues. I will oil fill the shaft tube to lubricate the outboard shaft bearing and protect against corrosion. This was a simple two day conversion with minimal machining required.</div><div>Hank</div></div></div></div><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"><br clear="none"></div></div> </div>
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