[PSUBS-MAILIST] (no subject)

Thu Jul 2 18:48:16 EDT 2020

 when I pull on the line, it opens a valve to let air into the mbtHank
    On Thursday, July 2, 2020, 2:45:33 PM MDT, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Hank,How can you support the negative weight of the sub and also activate the valve for the hp Co2 with the same 1/4" line?Rick
On Thu, Jul 2, 2020 at 10:10 AM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Yes the air source is a hp CO2 tank at 2000 psi

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On Jul 2, 2020, at 2:08 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:

Rick. I lower the sub on a 1/4 inch poly yellow rope. That same line activates the ball valve to send air to the MBT.  No regulators needed. I just send air at 2000 psi to the MBTHank

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On Jul 2, 2020, at 11:54 AM, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hank, is the air source a scuba tank on the outside of the sub with an valve to the second stage port of the first stage so you would get 150 psi over bottom? and is the 1/4" line that floats and unspools freely for just the valve to the air source if you need it? and do you have a larger line that you are lowering and raising the sub with?Rick
On Thu, Jul 2, 2020 at 7:32 AM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Rick, my system uses an air supply to raise the sub.  I just vent all the air with hose extensions to one location incase the waves are big.  Then I lower the sub maybe 10 to 20 lbs negative on a small nylon rope (1\4 inch)  The rope is on a floating spool, so it just feeds out as the sub sinks.  Okay Alec, as it submerges.    After one hr on the bottom, I pull on the rope, witch is connected to a spring loaded ball valve that releases air into the MBT's.  The rope can only pull the valve to full open, and then it hits a stopper.  If something is wrong, the rope can pull the sub up to the surface.  Hank
    On Thursday, July 2, 2020, 11:09:37 AM MDT, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 HankWhen you pressure tested it in the lake, did you just make it slightly negative and lower it by hand?  did you have drop weights set up or a lift bag you could fill it she started taking on water and was too heavy to pull her back up by hand? Rick
On Thu, Jul 2, 2020 at 2:01 AM hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Hi Rick,I built this sub originally in 2013 and put it in storage when I bought Gamma.  It was in the testing stage and had some stability issues.  I stripped parts off it to use in other projects.  When we decided to self isolate, I needed a project to help pass time, so I pulled it out from under the tarp and made a big modification to it, to solve the stability problem.  I pressure tested it a couple weeks ago to 450 feet  at a local lake.  I intend to pressure test it again, but to 600 feet.  It is turning out to be a very easy and cheap sub to build.  In fact, I am confident I could build a new one in one month, it is that simple.   Also, I am confident it can be built for under 10K.Hank
    On Wednesday, July 1, 2020, 11:55:52 AM MDT, Rick Patton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 Has this one been in the water or depth tested yet? What is it's working depth? Hard to keep track as you have so many projects going on!Rick
On Wed, Jul 1, 2020 at 6:29 AM T Novak via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Looks good, Hank.  Looking forward to seeing it under water.

Tim

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of hank pronk via Personal_Submersibles
Sent: Wednesday, July 1, 2020 5:03 AM
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: [PSUBS-MAILIST] (no subject)

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