[PSUBS-MAILIST] amp draw

Thu Jun 23 05:03:23 EDT 2016

Thanks Alan.  I will investigate further.

Regards
James

On 23 June 2016 at 01:47, Alan James via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> James,
> also in a lot of cases, the solenoid can just clip on to the valve
> & can be bought as a separate item. In this case it would need sealing on
> to the valve to stop water getting up & around the iron plunger
> that the electromagnet actuates.
> Alan
>
>
> ------------------------------
> *From:* Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Thursday, June 23, 2016 11:35 AM
>
> *Subject:* Re: [PSUBS-MAILIST] amp draw
>
> Hi James,
> Hugh is the expert in valves & he did tell me he hadn't found
> a suitable solenoid valve for exhausting the ballast tanks.
>    There are 3 types of solenoid valves, direct action, which relies on a
> strong solenoid to
> open the valve. Indirect actuation which uses the solenoid but relies on
> the pressure in
> the system to open the valve, & force lifting which is a combination of
> the two.
> You want the direct action or force lifting that don't require the
> pressure of the medium
> to open them. Of the two I would say direct action, as it probably is less
> complicated & has less
> components to corrode. The direct action are normally at least 24V as they
> require more power.
> One thing to look out for is the max operating pressure, as the ambient
> pressure at depth may exceed this.
> Article here on solenoids for corrosive environments.
> http://www.connexion-developments.com/solenoid-valves-aggressive-media.html
>    You will need to pot the wires going in to the solenoid of course.
> I had my 3 ballast tanks with solenoids operating remotely from a
> playstation controller, &
> it was great having that fine quick control. I also had solenoids for
> filling, these were in the hull & are great as
> long as you keep any water from backflowing in to the valve. These can be
> indirect action.
> Let me know if you see something suitable. Congratulations on the boat
> purchase, look forward
> to the dive videos.
> Cheers Alan
>
>
>
> ------------------------------
> *From:* hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Thursday, June 23, 2016 2:41 AM
> *Subject:* Re: [PSUBS-MAILIST] amp draw
>
> Sure can James, but I am sure Alan will chime in-he is up on the salt
> water issues.
> Maybe Hugh knows of a salt water capable valve.  I am so luck to be in
> fresh water ;-)
> Hank
>
>
> On Wednesday, June 22, 2016 8:19 AM, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> hmm, sounds interesting.  Can you send me a link?  They would have to be
> ok in salt water though.  But could test them or maybe modify?
>
> On 22 June 2016 at 13:26, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> James,
> Nice boat, I like the tender on back.   The cabin is a very nice feature.
> The solenoid system is simply air\water solenoid vents.  They amount
> directly to the MBT so there is no chance of an air trap in a line.  As
> Alan pointed out, there may be an issue with salt water.  I am sure there
> is a creative way to overcome that though.  You just screw them on and run
>  a couple of wires, it is that easy.
> Hank
>
>
> On Wednesday, June 22, 2016 5:54 AM, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank, can you elaborate on the solenoid system?  Sounds interesting.
>
> Check out my new boat to be used as submarine tender.  Im fed up with
> begging other people to help on dive days.
>
> Whilst its not the biggest boat for subbing, its convenient and also good
> for the odd day trip and fishing etc as well....
>
>
> 
>
>
>
> On 22 June 2016 at 12:17, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alan,
> I am not calling the guards Kort nozzles because a Kort nozzle is a
> precision made part intended to boost performance.  What I have is a random
> size heavy wall short piece of pipe around the prop with a layer of ss to
> extend the coverage.  I removed the ss layer so the prop is open just to
> see what happens.  The motor performance is good-the prop noise just needs
> to be investigated.  The new cartridge seals are a dream.
> I am welding on permanent MBT bottom vent extensions today.  When I
> installed the solenoid vents, I removed my temporary vent extensions
> thinking I did not need them.  Turns out the vent extensions are crucial.
> I ended up only putting two solenoids on the front of the rear tanks as
> well as a vent line to take care of that pesky little  air trap in front of
> the vertical thrusters.  The whole venting system works like a charm now.
> I have to say, I sure like the solenoid system-it would work nicely on a K
> sub also.
> Hank
>
>
> On Tuesday, June 21, 2016 8:49 PM, Alan James via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> Hank,
> Good thinking, looking at the original wires.
> Were you basing calculations on a marine wire gauge chart? They are a lot
> more liberal.
> I believe the kort nozzles put more load on your motor, in case that has
> anything to do
> with performance.
> Alan
>
>
>
> ------------------------------
> *From:* hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org>
> *To:* Personal Submersibles General Discussion <
> personal_submersibles at psubs.org>
> *Sent:* Wednesday, June 22, 2016 10:47 AM
> *Subject:* [PSUBS-MAILIST] amp draw
>
> Hi Alan,
> I rearranged my electrical system to 48 volts and my motors are now
> running in the sweet spot for amperage 12.5 each.  That was my target- I am
> basing the required amp draw by the original wire size in the motor
> penetrator.
> Hank
>
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