[PSUBS-MAILIST] R300 Dive at Lake Amistad

[Cliff Redus via Personal_Submersibles]

Surface speed is 3 knots.  The limit is not the thrusters but the bow wave
that obstructs the pilots view at speeds over this.  The electric issue was
when I designed the part that screws into the MK-101 lower unit that holds
the electrical penetrator, I should have chamfered the inside away from the
seal. When I inserted the pigtails for the electrical penetrator
and tightened up the penetrator, the rotation causes the threads to cut
into the pigtail insulation even though I had shrink insulation over the
pigtails.  To resolve the issues, I used several layers of shrink tubing
over each wire and over the overall pigtail and reinserted.  This solved
the problem.

Comms worked flawlessly, both VHF and OTS.  Issue I had on last outing was
the base VHF had radio had an electrical failure that caused the unit to be
able to receive but not send.  The issue I had on the OTS towards the end
of the previous dive was that the transponder was in a very shallow area
and I had inadvertently had squelch turned on for the unit in the
submersible.

I sure would like to take the boat to New York PSub convention and do a max
depth qualification.  It would be a very long tow.

Cliff


On Wed, Jan 27, 2016 at 4:45 PM, Alec Smyth via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Woo-hoo, good to see! It looks like your surfaced speed was terrific, I'm
> very curious what speed that was. And what did the electrical issue turn
> out to be? And the comms fixed too?
>
> Best,
>
> Alec
>
> On Wed, Jan 27, 2016 at 5:07 PM, Cliff Redus via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>>  Lake Amistad 2016 <https://www.youtube.com/watch?v=Ojwoedzn8ms> is a
>> link to YouTube video of dive last weekend.  This is the deepest dive to
>> date with the boat.  Got the thruster electrical issue from my last dive
>> sorted out.  The objective in diving this lake is that it is the deepest in
>> Texas and most of the time, the clearest.  Having said that, last weekend
>> visibility was bad.  Surface vis was 6ft, lost all light at 80 ft and zero
>> visibilty at 154 ft.  Still if was fun to get the deep dive in.
>>
>> Clif
>>
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>
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