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Bryan
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UPDATE to Argonaut DSV

Tue Jun 05, 2018 11:31 am

The screw on the front of the Argonaut DSV serves two purposes. Prevents lateral movement and is a positive stop when it is either fully open or fully closed.
I've had several requests from divers wanting to lock their DSV either the open or closed position. In the picture below is an inexpensive and easy solution. It's simply a nylon thumbscrew with a #8 O-ring on it. Put it in place of the phillips screw that came on your DSV originally and by putting more tension on the thumbscrew it will be much more difficult to turn. All new Argonaut DSV's and Argonaut Kraken regulators will have one included with them as an option for the diver if they want to use it.

Existing DSV Divers can get one simply by asking for it in the notes section of their next order though the website store.

In "theory" and if one was so inclined.. You could easily put shallow round divots at the fully open and closed position for an absolute positive lock....Of course this would be up to the diver to do and no DSV will be shipped with divots in it.....IF I were doing it, I would be 110% sure the diviots were in the correct place to have the mouthpiece fully open or closed when the screw was turned in or the DSV will leak like a screen door on a submarine!
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Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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rhwestfall
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Re: UPDATE to Argonaut DSV

Tue Jun 05, 2018 12:26 pm

With that bit of information, I now think I know where the nasty trickle of saltwater was coming from while diving in Curacao in April...... Thanks!
Bob

No Longer Awaiting my Kraken.....

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Bryan
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Re: UPDATE to Argonaut DSV

Tue Jun 05, 2018 1:42 pm

Before I send out a DSV or put one on a new Kraken, I make sure it is completely open, with no bite piece on it, block both openings with my hands and try to inhale from it. Within reason, no air should get by. If it does then I either correct the issue or toss it in the scrap bin. Even with O-ring sealed wagon wheels there are still 4 hose clamps and one clamp around the bite piece that a little water can sometimes get by. In my opinion the only way to mitigate all of that would be to take the approach of really really expensive rebreather DSV's and use screw down O-ring sealed joints at at all the attachment points....of course we would end up with a $600.00 hose loop :shock: :cry:
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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ScubaLawyer
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Re: UPDATE to Argonaut DSV

Tue Jun 05, 2018 2:33 pm

Bryan wrote:
Tue Jun 05, 2018 1:42 pm
Before I send out a DSV or put one on a new Kraken, I ...... try to inhale from it.
Ewwww... Cooties! :shock: :lol:
"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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Bryan
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Re: UPDATE to Argonaut DSV

Tue Jun 05, 2018 3:33 pm

ScubaLawyer wrote:
Tue Jun 05, 2018 2:33 pm
Bryan wrote:
Tue Jun 05, 2018 1:42 pm
Before I send out a DSV or put one on a new Kraken, I ...... try to inhale from it.
Ewwww... Cooties! :shock: :lol:
Did I mention the pets help sometimes ? :shock:
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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ScubaLawyer
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First Name: Mark
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Re: UPDATE to Argonaut DSV

Tue Jun 05, 2018 4:17 pm

Bryan wrote:
Tue Jun 05, 2018 3:33 pm
ScubaLawyer wrote:
Tue Jun 05, 2018 2:33 pm
Bryan wrote:
Tue Jun 05, 2018 1:42 pm
Before I send out a DSV or put one on a new Kraken, I ...... try to inhale from it.
Ewwww... Cooties! :shock: :lol:
Did I mention the pets help sometimes ? :shock:
Wasn't the original subject of this thread something about someone having a screw loose? 8)
"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968) :D

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couv
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Re: UPDATE to Argonaut DSV

Wed Jun 06, 2018 12:11 pm

Bryan wrote:
Tue Jun 05, 2018 1:42 pm
...block both openings with my hands and try to inhale from it.
Couldn't you just purchase some expensive end plugs for the blocking, and a calibrated vacuum pump and gauge set so the rest of the world doesn't participate in your Cuban cigar addiction? :idea:

On a serious note-Is there sufficient running torque on the new set screw to prevent loss if some absentminded coonass forgets to secure it between positions?

Perhaps I'm getting the intended purpose of this screw wrong? Is this to be used to lock open the DSV for the day of diving and lock closed for storage?
A sincere THANK YOU to all at VDH who make this wonderful resource available and to all the thoughtful contributors.

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Bryan
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Re: UPDATE to Argonaut DSV

Wed Jun 06, 2018 1:26 pm

Couldn't you just purchase some expensive end plugs for the blocking, and a calibrated vacuum pump and gauge set so the rest of the world doesn't participate in your Cuban cigar addiction? :idea:

My current calibration seems to work pretty well.....I'll never be in Cuban cigar pay grade!

On a serious note-Is there sufficient running torque on the new set screw to prevent loss if some absentminded coonass forgets to secure it between positions?

That's why I put the #8 O-ring on it to provide some cushion room. No doubt it COULD get lost but I'm not sure how to prevent that from happening 100%

Perhaps I'm getting the intended purpose of this screw wrong? Is this to be used to lock open the DSV for the day of diving and lock closed for storage?

Yes.....You can lock it open for your day of diving and Yes you could lock it shut for storage. I'm just trying to keep up with options the customer asks for. :D Or you can just leave the screw that came in it in place....Or you can swap back and forth....An amazing array of options for your diving pleasure :lol:
Doing it right should include some common sense, not just blindly following specs and instructions. .Gary D, AWAP on SB

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