[PSUBS-MAILIST] Gamma test dive

Sat Aug 9 07:58:18 EDT 2014

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 
  >   
  > 
  > 
  > 
  >
  _______________________________________________
  >    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

 -----Inline Attachment Follows-----

 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles