[PSUBS-MAILIST] Gamma test dive

Sat Aug 9 08:13:38 EDT 2014

The trick with good listening is to have your bullshit-o-meter set to maximum sensitivity. You asked the right questions to begin with, evaluated knowing what you know, added the data that the Nektons have done +12K dives like they are, and went to see. As they told me once at Gunsite Ranch in Arizona, we are not here to teach you to shoot. We are merely asking that you suspend what you know and let us teach you something new. Then you can make up your own mind.
Vance

-----Original Message-----
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Sent: Sat, Aug 9, 2014 7:58 am
Subject: Re: [PSUBS-MAILIST] Gamma test dive

Honestly Vance, I am at a loss for words how well it works.  After just one day, 
I feel like a real pro.  To think I was so against the idea.  I am glad I 
trusted the design and left it original. In the future I will listen, lol, well 
try to.
Hank
On Sat, 8/9/14, via Personal_Submersibles <personal_submersibles at psubs.org> 
wrote:

 Subject: Re: [PSUBS-MAILIST] Gamma test dive
 To: personal_submersibles at psubs.org
 Received: Saturday, August 9, 2014, 7:43 AM

 I'm happy
 to hear that things are smoothing out. The MBT air trick is
 like magic, right? The old Perry boats had very elaborate
 variable ballast systems, custom under deck tanks, 4-piston
 pumps, all SS valving and plumbing, etc. And of course we
 used it to find that sweet spot you mentioned and then
 pretty much ignored it afterwards.
 Vance

 -----Original
 Message-----

 From: hank pronk via Personal_Submersibles
 <personal_submersibles at psubs.org>

 To: Personal Submersibles General Discussion
 <personal_submersibles at psubs.org>

 Sent: Sat, Aug 9, 2014 7:28 am

 Subject: Re: [PSUBS-MAILIST] Gamma test dive

 Vance,
 I have to admit, you were right about how easy it is to
 operate.  I also find it 
 more fun and interactive than using a VBT.  The trick seems
 to be, to have the 
 weight of the sub in the sweet spot.  I just got lucky and
 had the weight 
 perfect right from the start.  I mean I had it calculated
 just perfect :-)
 Now that I know this will happen, I will simply turn on my
 emergency air supply 
 and give a little shot of air to return to my set point. 
 When the cabin 
 pressure has risen in past tests, I hit the air compressor
 for a couple of 
 seconds and it is corrected right away.
 The onboard air compressor was a savior at the lake.  I was
 able to refill both 
 hp tanks at the dock.  I used four tanks of air.
 I had zero leakage from windows ect.  The hatch seal leaks
 at the very start but 
 stops right away when I dive.  The hatch dogs need to be
 built up with some 
 weld.  The dogs are new but the CT has grooves worn into the
 steel from being 
 closed a million times or so.
 Hank

 On Fri, 8/8/14, Vance Bradley via Personal_Submersibles
 <personal_submersibles at psubs.org>

 wrote:

  Subject: Re: [PSUBS-MAILIST] Gamma test dive
  To: "Personal Submersibles General Discussion"
 <personal_submersibles at psubs.org>
  Received: Friday, August 8, 2014, 11:20 PM

  Hank,
  I
  might drop 2 inches of vacuum from deck temperature to
  submerged. Call it 0.5 psi. It was always that cooling
  effect that did it. I normally let the hull chill for 5-10
  minutes then reset the zero point, as we used the barometer
  for an eyeball pressure indicator for CO2 build up and draw
  down (ran the scrubber about 15 minutes/hour).
  Vance

  Sent
  from my iPhone

  > On Aug
  8, 2014, at 10:15 PM, hank pronk via Personal_Submersibles
  <personal_submersibles at psubs.org>
  wrote:
  > 
  > 
  > Pete LOL I had it right, I am going to
  bed--------------------------------------------
  > On Fri, 8/8/14, hank pronk via
  Personal_Submersibles <personal_submersibles at psubs.org>
  wrote:
  > 
  > Subject:
  Re: [PSUBS-MAILIST] Gamma test dive
  > To:
  "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
  > Received: Friday, August 8, 2014, 10:13
  PM
  > 
  > 
  > Pete,
  > sorry I meant 2
  lb positive, can you tell I have been on the
  > road for 6 hr and diving for 6 hr. 
  ;-)
  >
  --------------------------------------------
  > On Fri, 8/8/14, hank pronk via
  > Personal_Submersibles <personal_submersibles at psubs.org>
  > wrote:
  > 
  >  Subject: Re:
  >
  [PSUBS-MAILIST] Gamma test dive
  > 
  To:
  > "Personal Submersibles General
  Discussion" <personal_submersibles at psubs.org>
  >  Received: Friday, August 8, 2014, 10:01
  PM
  > 
  > 
  >  Pete,
  >  I have
  Gamma about 2 lb negative I dump all
  >
  the
  >  air in the ballast tanks, then
  start
  > sinking.  As I am
  >  sinking, I just give a
  > swirt of air, with some practice I am
  >  able
  > to stop and
  hover.  It is way easier than I though it
  >  would be.  
  > 
  >
  Hank--------------------------------------------
  >  On Fri, 8/8/14, Pete Niedermayr via
  >  Personal_Submersibles <personal_submersibles at psubs.org>
  >  wrote:
  > 
  >  
  > Subject: Re:
  >  [PSUBS-MAILIST] Gamma test
  > dive
  >   To:
  > 
  "Personal
  > Submersibles General
  Discussion" <personal_submersibles at psubs.org>
  >   Received: Friday, August 8,
  2014, 9:46 PM
  >   
  >   
  >  
  > Hank,
  >   How you stopping and
  hovering. Are
  > you
  >  weighted to  neutral
  >   buoyancy?Are you
  >  riding the
  > bubble?
  Doesn't Gamma use
  > 
  >  forward motion and a dive plain for
  depth
  > control?
  >   
  >   Pete 
  >   
  >  
  >
  -------------------------------------------
  >   On Fri, 8/8/14, hank pronk
  via
  >   Personal_Submersibles
  <personal_submersibles at psubs.org>
  >   wrote:
  >   
  > 
  >  
  >  Subject:
  [PSUBS-MAILIST]
  >   Gamma test
  dive
  >    To: personal_submersibles at psubs.org
  >    Date: Friday, August 8, 2014, 7:45
  PM
  >    
  >   
  Today I dove Gamma
  > to
  >  95
  >   feet in
  >    Kimbasket
  >  Lake
  (bush
  > Harbour)  the
  >   visibility was
  >    awful.
  >   
  > 
  > 
  >  Maybe 2 feet at
  best.  Big mystery
  > though, when I
  dive
  >    to 95 feet, in a
  > matter of 5 min the
  > 
  pressure
  >   inside drops
  >    by
  >  500 feet. 
  The pressure
  >  
  >
  stays right on
  >  perfect until
  >    I go deeper. 
  >   My
  >
  theory, the water is glacier fed, very
  >  
  > 
  >   cold at depth causing the
  >  temp inside the sub to drop,
  > 
  >   creating
  >  negative pressure.  Could that
  > be
  >   it?

  >    Vance, did
  >
  that happen in the north
  >   sea?  
  >    On a positive note,
  >  I can
  > stop in
  >   the water Colum at any
  >    depth and hover.  I
  >  
  > can
  >  surface and stop at ten feet
  >    and
  >   hover.
  > 
    Hank 
  >   
  > 
  > 
  > 
  >
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  >

  >  
  > 
  >   
  > 
  > 
  > 
  >
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