[PSUBS-MAILIST] Alec's new valves

Mon Oct 29 07:21:02 EDT 2018

 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- arduinocompatible tilt sensor / accelerometer to control my ballast solenoids.The idea is that to dive you flick one switch on the consul, this connectsto 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 descentbecomes 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

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 probablymake 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 E3000Hank
    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 goesin & out it would be displacing oil, so have the same problems as withlinear actuators. As the plunger has to be a material that can bemagnetised it is vulnerable to corrosion, so I will have to coat it inresin 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 theyget, how strong they are, what gauge wire they are using & how manyturns. 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 keepyou up to date with what I am doing, but the solenoids will take about2 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'smushroom 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 tubereceptacle with resin.The force varies depending on how far out the plunger is & on one Iordered it varied between 1 & 10kg; unfortunately I'll get a reduction in forceafter 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_______________________________________________
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

_______________________________________________
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

_______________________________________________
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/20181029/7914ba2a/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image1.JPG
Type: image/jpeg
Size: 518458 bytes
Desc: not available
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20181029/7914ba2a/attachment-0001.jpe>