[PSUBS-MAILIST] minn-kota cabling to hull

[hank pronk via Personal_Submersibles]

Jon,
In my experience, water will make the wires turn black, it seems to not bother anything.  Over time it likely is a problem.  if your concerned, then make the penetrator using a barbed fitting with threaded rod and an oil filled  hose.
Hank--------------------------------------------
On Thu, 4/16/15, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] minn-kota cabling to hull
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Thursday, April 16, 2015, 6:23 PM
 
 
     
 
       Alan,
 
       
 
       The best approach is to use threaded rod with the
 potting, if
       possible.  My question is probably better stated in
 the context of
       whether air trapped between a multi-wire cable and the
 surrounding
       sheath is an issue to be concerned about.  Some
 cables have a good
       tight sheath but others such as CAT-5 is pretty
 sloppy.
 
       
 
       A potential concern of the blue globe gland since it
 seals around
       the cable sheath is what happens if the sheath gets
 damaged and
       cut underwater.  Water pressure will allow creep to
 flow between
       the wires and sheath bypassing the gland.  However
 the same would
       be true of a home-made potted penetrator as well. 
 What type of
       inflow should we expect from such a breach? 
 Minor?
 
       
 
       Jon
 
       
 
       
 
       
 
       On 4/16/2015 4:46 PM, Alan James via
 Personal_Submersibles wrote:
 
     
     
       
         Jon,
         I noted
 that the lights
             on "I think" a dual DW at
 Nuytco
         had oil in
 the wiring
             tubes to the lights, which were a clear
 plastic.
         I
           compensated a linear actuator & didn't
 strip the wires
           inside the potting.
         I filled
 it
           with WD40, & it just ran out between the epoxy
 & the
           wires when
         I tipped
 it
           upside down. No pressure applied. 
         I think it
           was Hank that suggested untwisting the wires so
 the potting
           mix 
         can get
           around them. On the through hulls, Carsten &
 Emile are
           using
         blue globe
           cable glands with one outside the hull &
 another inside
           for
         double
           security.
         Alan
         
 
         
           
             
               
  From:
                 Jon Wallace via Personal_Submersibles
                 <personal_submersibles at psubs.org>
 
                 To:
                 Personal Submersibles General Discussion
                 <personal_submersibles at psubs.org>
 
 
                 Sent:
                 Friday, April 17, 2015 12:06 AM
 
                 Subject:
                 [PSUBS-MAILIST] minn-kota cabling to hull
 
                
             
 
               
 
               I think Emile had details of potting the
 minn-kota. 
               Anyone know where 
 
               this might be located?
 
               
 
               Anyone waterproofing their cabling by
 oil-compensation
               through a poly 
 
               tube?  If I remember correctly, Aquarius uses
 this method
               for the 
 
               electrical wires to the lights and vacuum.
 
               
 
               Jon
 
               
 
              
 _______________________________________________
 
               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
 
     
     
 
   
 -----Inline Attachment Follows-----
 
 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles