[PSUBS-MAILIST] magnetic coupler

Fri Mar 21 09:24:24 EDT 2014

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.

Joe

On Friday, March 21, 2014 6:16 AM, "vbra676539 at aol.com" <vbra676539 at aol.com> wrote:

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. 
Vance

-----Original Message-----
From: Joe Perkel <josephperkel at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Sent: Fri, Mar 21, 2014 5:26 am
Subject: Re: [PSUBS-MAILIST] magnetic coupler

...and perhaps an vertical facing flood lamp for night ops? Or is normal lighting adequate?

Joe

Sent from my overpriced  
iPhone

On Mar 21, 2014, at 4:05 AM, Vance Bradley <VBra676539 at AOL.com> wrote:

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. 
>Vance
>
>Sent from my iPhone
>
>On Mar 21, 2014, at 1:21 AM, "Brian Cox" <brian at ojaivalleybeefarm.com> wrote:
>
>
>Is there a preferred method of releasing a big bubble?
>>
>>--- VBra676539 at AOL.com wrote:
>>
>>From: Vance Bradley <VBra676539 at AOL.com>
>>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
>>Subject: Re: [PSUBS-MAILIST] magnetic coupler
>>Date: Thu, 20 Mar 2014 21:03:12 -0400
>>
>>
>>The air bubble to the surface is a time honored practice for sub ops. Much cheaper than all the electronic tracking gear on Alvin.
>>Vance
>>
>>Sent from my iPhone
>>
>>On Mar 20, 2014, at 7:57 PM, Alan James <alanlindsayjames at yahoo.com> wrote:
>>
>>
>>Thanks Hank,
>>>I was thinking it would come together fast. Might be a sod to get apart again.
>>>Maybe you could use a smaller magnetic coupler for other functions on a submarine.
>>>For instance it could be the axle in a drum of cord that the emergency buoy or an ascent
>>>warning buoy could be released with. The power of the magnet would stop the drum from
>>>rotating & releasing line, but if you pulled the magnet out of the housing slightly you could
>>>control the release speed of the buoy & avoid a birds nest in the line. If you had a drive on it
>>>it could be set to slip against the buoancy of he buoy but reel in line if there was slack.
>>>I've thought that sending up a buoy before ascending would be a good way of warning your tender
>>>or any other pleasure craft. The tourist subs in Hawaii send up a huge bubble of air. The tender spots
>>>this & radios an acknowledgement that they are clear before the ascent.
>>>Alan
>>>
>>>
>>>
>>>
>>>
>>>________________________________
>>> From: hank pronk <hanker_20032000 at yahoo.ca>
>>>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>>>Sent: Friday, March 21, 2014 10:07 AM
>>>Subject: Re: [PSUBS-MAILIST] magnetic coupler
>>> 
>>>
>>>
>>>Alan,
>>>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! 
>>>Hank
>>>
>>>
>>>
>>>On Thursday, March 20, 2014 1:04:29 PM, Alan James <alanlindsayjames at yahoo.com> wrote:
>>> 
>>>Hi Hank,
>>>The part that looks like an oil filter is the covering over a rotating magnet?
>>>
>>>The second part is the full assembly that fits over the magnet (oil filter) portion.
>>>What sort of force is involved when you put together or pull the two magnetic portions apart?
>>>If you jammed the propellor on something the internal magnet would still rotate
>>>but can it pull apart separating the propellor & it's obstruction from the coupler?
>>>I've added a link to the coupler.
>>>http://www.psubs.org/projects/1327775450/gammarestoration/
>>>
>>>Alan
>>>
>>>
>>>From: hank pronk <hanker_20032000 at yahoo.ca>
>>>To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
>>>Sent: Thursday, March 20, 2014 10:26 AM
>>>Subject: [PSUBS-MAILIST] magnetic coupler
>>> 
>>>
>>>
>>>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.
>>>Hank
>>>_______________________________________________
>>>Personal_Submersibles mailing list
>>>Personal_Submersibles at psubs.org
>>>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
>>>
>>>
>>>_______________________________________________
>>>Personal_Submersibles mailing list
>>>Personal_Submersibles at psubs.org
>>>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
>>>
>>>
>>>_______________________________________________
>>>Personal_Submersibles mailing list
>>>Personal_Submersibles at psubs.org
>>>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
>>>
>>_______________________________________________
>>>Personal_Submersibles mailing list
>>>Personal_Submersibles at psubs.org
>>>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>_______________________________________________
Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles 
>_______________________________________________
>>Personal_Submersibles mailing list
>>Personal_Submersibles at psubs.org
>>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
_______________________________________________
>Personal_Submersibles mailing list
>Personal_Submersibles at psubs.org
>http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
_______________________________________________
Personal_Submersibles mailing list Personal_Submersibles at psubs.org http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles 

_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20140321/2baeaac6/attachment-0001.html>