[PSUBS-MAILIST] battery experiment

Tue Nov 3 18:41:46 EST 2020

 Thanks Hank, that was on my lights. It was a 2 part polyurethane, I am not surewhat hardness it was. I made the mold outof aluminium. I coated the wiring, potting resin in the end of the light where the wire goes through & the aluminium housing with a 2 part pvc glue first. Alan
    On Wednesday, November 4, 2020, 11:34:12 AM GMT+13, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

  Alan, I just made a o-ring sealed cap for the battery and it works perfect.  I was going to ask you about your cable potting material that you use in that little mould you made.  That looks real pro!Hank
    On Tuesday, November 3, 2020, 1:20:00 PM MST, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

  I think a key will be getting a good glue that bonds well to the casing to seal the terminals and go over the connection and cable as an initial layer. Alan
    On Wednesday, November 4, 2020, 09:15:35 AM GMT+13, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Alan , I have some ideas to make simple. Fingers crossedHank

Sent from my iPhone

On Nov 3, 2020, at 12:31 PM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Hank, some more thoughts; maybe find a barbed fitting with the same thread as the battery cap & with an o-ring. This would make it easy for anyone to emulate what you are doing. Might be difficult checking the water level in the batteries with a layer of oil on top. Perhaps a probe that showed some current flow when it pushed down through the oil layer to the water layer; but this may get gunked up with oil on the way down. Depending on how the top of the battery is molded, it may be difficult getting all the air out. I am pretty sure I had problems. I am sure there was a section on compensating batteries in the Busby book & I think in the ex military document on compensating underwater enclosures that I have referenced before. (Am moving & books in another town) Cheers Alan
    On Wednesday, November 4, 2020, 08:11:54 AM GMT+13, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

  Hank, Maybe you could have all the hoses from the caps going in to one manifold that has an oil fill port. And one tube going out the top of the manifold for compensation. You would need an air gap in the top of the manifold so off gassing doesn't force the oil out. How deep is it going to go. While I'm thinking of it, I used baby oil that had some scented additive that caused the battery to off gas. Stopped when I went to pure mineral oil. Alan
    On Wednesday, November 4, 2020, 07:58:53 AM GMT+13, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 I am using wet cell Hank

Sent from my iPhone

On Nov 3, 2020, at 11:29 AM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 I looked up golf cart batteries & they use both flooded & sealed. I compensated the sealed AGM batteriesfor my ambient, but a bit more complicatedthan wet cel. Alan
    On Wednesday, November 4, 2020, 06:38:50 AM GMT+13, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Alan.  I am experimenting with golf cart batteriesHank

Sent from my iPhone

On Nov 3, 2020, at 10:18 AM, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Hank, it could work but it would be easier to make a box out of ply wood & oil fill it & just have 2 through hulls for the wires. If you are having batteries in series you would be creating multiple points where the connecting wires would have to be sealed & could fail. Are they sealed lead acid batteries? Alan

    On Wednesday, November 4, 2020, 02:10:34 AM GMT+13, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Okay, your gonna think I am nuts  but I am doing an experiment with lead acid batteries.  I am going to make a new cap that accepts a barbed hose fitting and water tight post enclosures , so I can fill the battery with oil and submerge it without an enclosure (battery pod)The hoses will be coiled and open to the sea.  Do you think it will work?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
  _______________________________________________
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/20201103/78b86756/attachment-0001.html>