[PSUBS-MAILIST] Skadoc Question

[Antoine Delafargue via Personal_Submersibles]

hello James,
funny I asked myself the same question the last few days.

-blue globes are the simplest: rated 15bars I believe. Emile tested them to
even higher pressure without sliding. with 2 on each end you have extra
comfort.
but that would not be class approved as any damage to the cable sleeve and
you will be wet inside the sub.

-Subconn as a high power line. but you have to check the maximum amperage.
would be expensive. and lead time seemed a bit long last time this group
discussed it.

-Epoxy potting in some time of insert. you need nice craft skills I would
think

-Final option: a more elaborate design I used on pilot fish:
 *a delrin sleeve goes into the penetration
*inside runs a brass pin with a shoulder profile to prevent intrusion into
the hull, the pin is glued in the delrin housing, and the cable is soldered
into the pin. A blue globe caps it off so no water gets into the pin area.
*inside the hull you have a delrin ring to isolate the electrical
connection from the hull, then a brass screw covering the brass pin end and
the retaining delring ring. the internal cable can be covered by that screw
too via a crimp.
this could even be more elaborate with orings rather than glue, and a
system to make the inside of the hull water tight as well.


regards
Antoine



On Mon, May 11, 2020 at 11:29 AM James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All
> Continued to work on Skadocs new battery pod this weekend.
>
> I was making good progress until the coolant pump on my lathe broke down.
> Its all blocked with sludge.  Not looking forward to cleaning that out....
>
> Anyway, I have a question.  How do you guys think I should take the power
> from the pod into the hull?
>
> I found the K350 battery pod electrical through hulls tiresome to make and
> fit.  So I want to do it different this time.
>
> Options.
>
> 1.  Proper sub conn bulkhead connector.
>
> 2.  Pipe fitting with a valve and detachable cables.  In the event of a
> leak in the pod, the cables could be pulled clear and the valve closed.
>
> 3.  Blue Globe or similar cable glands.  Two on the pod, two on the hull.
>
> Any ideas?  There are pro's and cons of each.
>
> [image: Pod.jpg]
>
>
>
>
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