[PSUBS-MAILIST] Gamma buoyancy

[via Personal_Submersibles]

Hank,
 
That pic of Gamma by the dock makes me drool.   Absolutely beautiful!
 
If I understand correctly, you loaded ballast so that when  your MBTs are 
fully flooded, you're 10 lb negative.  What was your  technique for arresting 
your sink rate and hovering?  About how many feet  above your target depth 
did you initiate "stop sink?"  Do you know  what your sink rate was at -10 
lb?
 
Cheers,
Jim T. 
 
 
In a message dated 5/7/2014 7:31:43 P.M. Central Daylight Time,  
personal_submersibles at psubs.org writes:

Hi  Joe,
Thank you, 
Gamma does not have a VBT.  When I had Gamma at  the correct weight (10 lbs 
heavy) it was easy peezy to hover, the trick is to  control descent without 
hitting bottom.  That just takes practise, by the  time I was out of air I 
pretty well had it.  This sub is so easy to  operate, my friend was able to 
dive Gamma with a 2 min lesson.  I have to  admit Vance was right and I was 
wrong.  VBT is a waste of time.   Also it is more fun to operate a sub 
without a VBT because you actually  control it constantly until your at  depth.

--------------------------------------------
On Wed, 5/7/14,  Joe Perkel via Personal_Submersibles 
<personal_submersibles at psubs.org>  wrote:

Subject: Re: [PSUBS-MAILIST] (no subject)
To: "Personal  Submersibles General Discussion"  
<personal_submersibles at psubs.org>
Received: Wednesday, May 7, 2014,  8:16 PM

Hank, Gamma
doesnt have a VBT does it?  Can you  speak to the
virtues of fine depth control without
one? What a  beautiful
boat! Joe 
On Wednesday, May  7,
2014 6:33 PM, hank pronk via  Personal_Submersibles
<personal_submersibles at psubs.org>  wrote:
Alan,
Thank you, I am pleased with the  outcome. 
I do need to put a proper paint job on it  still.  
I guess it is time to start thinking about what
is next to  build.
Hank
--------------------------------------------
On Wed,  5/7/14, Alan James via
Personal_Submersibles  <personal_submersibles at psubs.org>
wrote:

Subject:  Re:
[PSUBS-MAILIST] (no subject)
To:
"Personal Submersibles  General Discussion" 
<personal_submersibles at psubs.org>
Received: Wednesday, May 7, 2014, 6:22 PM

Looks a  really
nice boat sitting there in the water
Hank.Here's your  photo
linkhttp://www.psubs.org/projects/1327775450/gammarestoration/
Alan

From: hank pronk  via

Personal_Submersibles
<personal_submersibles at psubs.org>
To:
personal_submersibles at psubs.org 
Sent: Thursday, May 8,  2014
10:11 AM
Subject:
[PSUBS-MAILIST] (no
subject)


I
just added pictures of my  test dive to Gamma
restoration.  You can see Gamma has  great
freeboard,
and this is with 200 lbs to  much
ballast.  I am
real
tired of subs being to  light to sink,
so I went the other
way and made  it
heavy.  I dove it then remove weight

about 5 times to get it  just right.  In the end
Gamma
was 10 lbs heavy.  Much  easier
to control descent with
the proper weight
:-)
Hank

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