[PSUBS-MAILIST] magnetic coupler
Sean T. Stevenson
cast55 at telus.net
Sat Mar 22 10:25:41 EDT 2014
How much current does a coffee maker draw?
Sean
On 2014-03-21 04:14, 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
> <mailto: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
>> <mailto:brian at ojaivalleybeefarm.com>> wrote:
>>
>>> Is there a preferred method of releasing a big bubble?
>>>
>>> --- VBra676539 at AOL.com <mailto:VBra676539 at AOL.com> wrote:
>>>
>>> From: Vance Bradley <VBra676539 at AOL.com <mailto:VBra676539 at AOL.com>>
>>> To: Personal Submersibles General Discussion
>>> <personal_submersibles at psubs.org
>>> <mailto: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
>>> <mailto: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
>>> <mailto:hanker_20032000 at yahoo.ca>>
>>> *To:* Personal Submersibles General Discussion
>>> <personal_submersibles at psubs.org
>>> <mailto: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 <mailto: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
>>> <mailto:hanker_20032000 at yahoo.ca>>
>>> *To:* Personal Submersibles General Discussion
>>> <personal_submersibles at psubs.org
>>> <mailto: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
>>>
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