<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14pt">That one picture of Great White lit up dockside in that lake is truly awesome. I really like the idea of night ops. Thanks Vance.<br><br>Joe<br><div><span><br></span></div><div style="display: block;" class="yahoo_quoted"> <br> <br> <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"> <font face="Arial" size="2"> On Friday, March 21, 2014 6:16 AM, "vbra676539@aol.com" <vbra676539@aol.com> wrote:<br> </font> </div> <div class="y_msg_container"><div id="yiv4134487215"><div><font color="black" face="Arial, Helvetica, sans-serif" size="3"><font class="yiv4134487215Apple-style-span"
size="3">The coolest thing about night ops (for the surface crew) is seeing the sub lights way down deep and watching her all the way up. Of course, the really coolest thing is being down there doing it.....as long as the coffee is still hot. You won't need a vertical lamp, although a xenon flasher with a pressure switch is mighty nice to have, as you can see that little guy for miles.</font>
</font><div><font class="yiv4134487215Apple-style-span" size="3">Vance<br clear="none">
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<div class="yiv4134487215yqt7691843630" id="yiv4134487215yqtfd88713"><div style="font-family:helvetica, arial;font-size:10pt;color:black;">-----Original Message-----<br clear="none">
From: Joe Perkel <josephperkel@yahoo.com><br clear="none">
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none">
Sent: Fri, Mar 21, 2014 5:26 am<br clear="none">
Subject: Re: [PSUBS-MAILIST] magnetic coupler<br clear="none">
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<div>...and perhaps an vertical facing flood lamp for night ops? Or is normal lighting adequate?</div>
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<div>Joe</div>
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On Mar 21, 2014, at 4:05 AM, Vance Bradley <<a rel="nofollow" shape="rect" ymailto="mailto:VBra676539@AOL.com" target="_blank" href="mailto:VBra676539@AOL.com">VBra676539@AOL.com</a>> wrote:<br clear="none">
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<div>Vent from mbt--you do it anyway to slow ascent, then do it some more to hover at fifty feet so the surface support boat can find you. </div>
<div>Vance<br clear="none">
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On Mar 21, 2014, at 1:21 AM, "Brian Cox" <<a rel="nofollow" shape="rect" ymailto="mailto:brian@ojaivalleybeefarm.com" target="_blank" href="mailto:brian@ojaivalleybeefarm.com">brian@ojaivalleybeefarm.com</a>> wrote:<br clear="none">
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<div style="font-family:Arial, sans-serif;font-size:10pt;">Is there a preferred method of releasing a big bubble?<br clear="none">
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--- <a rel="nofollow" shape="rect" ymailto="mailto:VBra676539@AOL.com" target="_blank" href="mailto:VBra676539@AOL.com">VBra676539@AOL.com</a> wrote:<br clear="none">
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From: Vance Bradley <<a rel="nofollow" shape="rect" ymailto="mailto:VBra676539@AOL.com" target="_blank" href="mailto:VBra676539@AOL.com">VBra676539@AOL.com</a>><br clear="none">
To: 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">
Subject: Re: [PSUBS-MAILIST] magnetic coupler<br clear="none">
Date: Thu, 20 Mar 2014 21:03:12 -0400<br clear="none">
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<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 clear="none">
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On Mar 20, 2014, at 7:57 PM, Alan James <<a rel="nofollow" shape="rect" ymailto="mailto:alanlindsayjames@yahoo.com" target="_blank" href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</a>> wrote:<br clear="none">
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<div><span>Thanks Hank,</span></div>
<div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><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-family:HelveticaNeue,;"><span>this & radios an acknowledgement that they are clear before the ascent.</span></div>
<div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;"><span>Alan</span></div>
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<div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> hank pronk <<a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" 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 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, March 21, 2014 10:07 AM<br clear="none">
<b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] magnetic coupler<br clear="none">
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<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>
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<div dir="ltr"> <font face="Arial" size="2"> On Thursday, March 20, 2014 1:04:29 PM, Alan James <<a rel="nofollow" shape="rect" ymailto="mailto:alanlindsayjames@yahoo.com" target="_blank" href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</a>> wrote:<br clear="none">
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<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">
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<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">
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<div style="color:rgb(0, 0, 0);font-family:HelveticaNeue,;">Alan</div>
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<font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> hank pronk <<a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" 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 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> 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">
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<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>
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