[PSUBS-MAILIST] Deepish test.

Tue Aug 16 07:42:02 EDT 2022

Hello James
Nice test! Indeed hard to find deep waters here in the Channel. And
managing tidal currents is tricky.
I had to go to the Mediterranean sea for my sub where I rented a barge for
a few thousand euros with a crane to put the sub in the water and a winch
to roll the cable holding the sub to -250m.
The main issue there was bureaucratic, as I did the test close to the
French nuclear attack submarine base.

Regards,
Antoine

Le mar. 16 août 2022 à 09:56, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> a écrit :

> Hi all,
> Could have been condensation on the port.  I’m going to leave that for now
> and just tackle the valve.
>
> With regards to cost.  I’ll take that off list with those interested.
>
> @cliff.  I totally agree that 1.25 x operating depth is the correct way to
> test it.  But this is the best I can do.  I tried to take it to the chamber
> in Aberdeen.  Had it all booked but then the day before I was to leave,
> they said they wouldn’t do it as it’s home made and if it failed might
> damage their equipment.  There are no lakes here and to get 100 meters in
> the ocean would take about a 4 hour trip just to get there and at the price
> of the hire boat, I had to go closer in.
>
> I told them to get me as deep as they could.  We were in 60 meters of
> water so I should really have been able to get a bit more.
>
> It will have to do.  I think as I got to 43 meters, plus the pressure drop
> inside, I can dive confidently to 40.  There is a wreck I want to do that
> is 30, so should be good for that.
>
> @rick.  The hatch was sealed with ratchet straps.  6 in total.  Plus a
> pressure drop inside.  I tested the seal by removing the straps once the
> pressure was dropped and trying to open the hatch.  I could not.
>
> Regards
> James
>
>
>
> On Monday, 15 August 2022, Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Great video James! I kept seeing dollar signs during the video, land
>> craines and work boats. I saw a strap on the front of the hatch to secure
>> it but didn't get a good look at the rear of the hatch.
>> Rick
>>
>> On Mon, Aug 15, 2022 at 4:45 AM via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> Webb Maynard tested his K350 Lake Diver by diving it himself
>>> incrementally, all the way to 500 feet. George had a stiff-neck down-East
>>> hissy fit when he heard. Maynard just gave him one of those aw shucks grins
>>> and said hey, all's well that ends well. And as rowdy as I got complaining
>>> about it, the is exactly what Karl Stanley did, and he's made about a
>>> jillion dives since with no problems. I'm not pointing any fingers here
>>>  lads. Just sayin'.
>>> Vance
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Cliff Redus via Personal_Submersibles <
>>> personal_submersibles at psubs.org>
>>> To: via Personal_Submersibles <personal_submersibles at psubs.org>
>>> Sent: Mon, Aug 15, 2022 9:37 am
>>> Subject: Re: [PSUBS-MAILIST] Deepish test.
>>>
>>> Congratulations James.  Always great to see a successful depth
>>> qualification test.  To sort out the leaky scuttle valve, I would build a
>>> bench pressure test and retest after disassembly, inspection and repacking.
>>>
>>> As you note, K250 have seen much deeper depths than 50 m.  If it were
>>> me, I would shoot for depth qualification of 1.25 times 250 ft operating
>>> depth or 313 ft (95m).   As well built as your boat is, a depth
>>> qualification to 95m should be no problem.
>>>
>>> As to small leak on viewport I am with Vance, I have a lot of
>>> condensation on all my dives as I don't have on AC system.  I would make
>>> sure this water was not fresh.
>>>
>>> Best
>>>
>>> Cliff
>>>
>>> PS: that was a serious tender boat you used for test.  If you don't mind
>>> answering, what was the day rate on the boat?
>>>
>>>
>>> On Monday, August 15, 2022 at 05:13:39 AM CDT, via Personal_Submersibles
>>> <personal_submersibles at psubs.org> wrote:
>>>
>>>
>>> Congratulations, James. Was that seawater at the viewport? I didn't see
>>> a taste test. Could simply have been condensation, yes? Good news, though.
>>> Now you can sort that valve out and go diving. What a great way to end the
>>> summer!!!
>>> Vance
>>>
>>>
>>> -----Original Message-----
>>> From: James Frankland via Personal_Submersibles <
>>> personal_submersibles at psubs.org>
>>> To: Personal Submersibles General Discussion <
>>> personal_submersibles at psubs.org>
>>> Sent: Mon, Aug 15, 2022 5:30 am
>>> Subject: [PSUBS-MAILIST] Deepish test.
>>>
>>> Hi all.
>>> I finally managed to do a deep test.  We get about 60 meters reasonably
>>> close to land.  There are some deeper places but they are too far out to
>>> sea to get to easily.
>>> I was trying for 50 meters which is no where near what she should be
>>> tested to I know, but it’s deeper than she has ever been or likely to go
>>> from now on.
>>> There was 40 meters of cable and 10 meters of strops, but the deck
>>> length gobbled some up and they left a turn on the winch.  We drifted with
>>> the tide for an hour with the sub at the end of the line.  It’s very flat
>>> on the seabed where we were so nothing to crash into.
>>> So in the end I got about 43meters.  I’m slightly disappointed I
>>> couldn’t get to 50 but there we go.
>>> The crew haven’t sent me the rov footage yet but when they do I will
>>> modify the video to include it.  I couldn’t look at the footage as they
>>> were doing it fearing the sight of a crushed sub coming into view.  I went
>>> and hid on the bridge and tried to gauge the reaction of those looking at
>>> it.....
>>> Anyway, I’m not sure what to do with the weep on the viewport and
>>> valve.  Reseat the port? Any ideas?
>>> Regards
>>> James
>>> https://youtu.be/Wbjvgc7DBzM
>>> _______________________________________________
>>> 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/20220816/c0324343/attachment.html>