[PSUBS-MAILIST] Alec's new valves

Mon Oct 29 11:03:28 EDT 2018

I'm with you Hank! The other thing is that with four valves this big, the
sub shouldn't even have time to get out of trim when submerging.

Alec

On Mon, Oct 29, 2018 at 7:22 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Alan,
> I have to admit, that is pretty tempting.  I am torn between having a nice
> feature and my HATRED for electronics in a sub.  At Lake Tahoe, the only
> issues with Gamma  were ELECTRONIC, yes even Gamma with minimal electronics
>  had a failed potentiometer on the speed control.  Luckily, because I HATE
> and distrust all things electronic I carry a spare everything.  Are you not
> afraid if you make the sub so easy to operate that you take the joy out of
> diving it.
> Hank
>
> On Sunday, October 28, 2018, 10:38:27 PM MDT, Alan via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank,
> you'll really get excited over this! I have purchased a $10- arduino
> compatible tilt sensor / accelerometer to control my ballast solenoids.
> The idea is that to dive you flick one switch on the consul, this connects
> to the arduino board & via relays opens the ballast solenoid valves.
> If the sub starts to descend unevenly the arduino will read this from the
> tilt sensor & turn off the appropriate ballast valve untill the subs
> descent
> becomes level.
> Probably a bit of fine tuning in the field required.
> In the photo below I am only showing one relay as an example but will
> need to source relays based on my currently unknown power requirements.
> That is basically it, apart from the wiring.
> Cheers Alan
> [image: image1.JPG]
>
> On 29/10/2018, at 10:42 AM, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hank,
> I would be interested in seeing them when they are finished.
> Attached is one of my preliminary designs, but will probably
> make the Aluminium housing a tight fit around the wires as
> a heat sink. Being vent valves they won't get water cooled till
> the ballast tanks are flooded.
> Alan
>  <image1.JPG>
>
> On 29/10/2018, at 10:14 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alan,
> I am making solenoid vent valves and immersing the entire valve in oil
> with a compensation bladder.  I used them on my salvage ROV that did
> thousands of cycles without anything done to them.  I need two on Gamma and
> two on E3000
> Hank
>
> On Sunday, October 28, 2018, 1:57:10 PM MDT, Alan via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank,
> I would need to put a seal on the plunger & as the plunger goes
> in & out it would be displacing oil, so have the same problems as with
> linear actuators. As the plunger has to be a material that can be
> magnetised it is vulnerable to corrosion, so I will have to coat it in
> resin anyway. It is just a matter of putting the plunger on the lathe
> & taking off enough metal to make room for the resin.
> I made a solenoid valve years ago. It was 60W & got hot really fast.
> I have ordered a 48V & 24V solenoid mainly to see how hot they
> get, how strong they are, what gauge wire they are using & how many
> turns. If neither is suitable at least I will get some ideas for building
> one.
> I have been inspired by those little open waterproofed motors I bought.
> What were you going to use the solenoids for? If you want I will keep
> you up to date with what I am doing, but the solenoids will take about
> 2 weeks to get here.
> Alan
>
>
> On 29/10/2018, at 8:29 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Alan,
> Why don't you just make a housing for the solenoids and oil fill.  That is
> one of my first projects when I get back to the sub.
> Hank
>
> On Sunday, October 28, 2018, 12:46:29 PM MDT, Alan via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hank,
> yes just making fun of you! It's an old English saying!
> Thanks Alec, I see I have already "liked" them. Nice piece of work.
> You guys got me inspired & I ordered a couple of solenoids to modify
> Vance's
> mushroom valve design & make it electric. I will have to waterproof the
> solenoids,
> which will involve machining the plunger so I can coat it & it's iron tube
> receptacle with resin.
> The force varies depending on how far out the plunger is & on one I
> ordered it varied between 1 & 10kg; unfortunately I'll get a reduction in
> force
> after coating everything with resin. I am not sure how much spring force I
> should
> need to close it yet.
> Alan
>
>
>
>
>
> On 29/10/2018, at 6:49 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Have you guys never heard the saying "on pins and needles"  or are you
> just making fun of me
> Hank
>
> On Sunday, October 28, 2018, 8:33:01 AM MDT, Alec Smyth via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Yeah, I'm not sure what Hank was talking about concerning piss and
> needles, it doesn't sound good at all. But Alan, scroll down on this page
> and you'll see the valves...
>
> https://www.facebook.com/pg/INNERSPACESCIENCE/posts/
>
>
> On Sat, Oct 27, 2018 at 10:29 PM Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hank,
> glad you clarified that, it read like you were an alcoholic & junky.
> What valves were they? I haven't received any posts lately &
> were wondering if I had missed some.
> Alan
>
>
> On 28/10/2018, at 1:20 PM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Pins
>
>
> On Saturday, October 27, 2018, 6:19:32 PM MDT, hank pronk via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Alec,
> I am on pis and needles waiting to hear about your new valves and how they
> perform.  Have you tested them?
> Hank
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