[PSUBS-MAILIST] solenoid valves

[Alec Smyth via Personal_Submersibles]

Hi Hank,

Great the new valves work so well. I recall you posting photos of a new
valve during the winter, but unless my memory is playing tricks on me
(which it does) I recall a small pneumatic ram, not a solenoid. Did you
change that or am I wrong?

Best,
Alec

On Mon, Apr 15, 2019 at 4:36 PM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> When we were in Lake Tahoe, Alec asked if I get an air lock in my MBT vent
> lines.  I said no, but that got me thinking, and I may not have realized
> that I was getting a air lock.  Normally I dive Gamma heavy with no issues
> but  at Lake Tahoe I was diving very close to neutral.  The problem I was
> having at Lake Tahoe, was the sub leaning uncomfortable while submerging.
> I blame that on the weight of the sub and since the sub was light it could
> not push the water out of the vent lines casing a blockage.  I like diving
> closer to neutral now so I installed 4 solenoid vent valves as an
> experiment.  It has solved the problem completely.  In fact I only need two
> valves to make it sink perfectly now.  With all four valves open plus the
> two original valves open, the sub dives in 1 min and 30 seconds.  Slow
> compared to Alec's sub but good for Gamma.
>
> My next challenge is to install a bigger port in E3000.  First I am
> planning a proper poured concrete test pool in my new shop.  Then I will
> dive E3000 a couple million times in the pool.  Then I can work on a larger
> port assembly.
> Hank
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