[PSUBS-MAILIST] wanted

Tue Dec 9 17:43:58 EST 2014

Alan,
Agreed, but there is not that much lift, you need to subtract the volume of the elliptical head.  The apex is 1/2 the thickness, according to the supplier.  It makes sense because the dia is large.  I am thinking about taking a steel head and cutting it down so there is only four straps left and use that as a external stiffener and bumper.
Hank--------------------------------------------On Tue, 12/9/14, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] wanted
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Tuesday, December 9, 2014, 5:19 PM

 Did a
 quick calculation & there will be 491lb of lift
 ina 36"
 hemisphere, so yes it would not pay to take short cuts
 mounting it.Remember
 you will get 1/3rd thickness at the apex which will be your
 most vulnerable
 point, out at the front.Alan

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

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

 Sent:
 Wednesday, December 10, 2014 10:45 AM

 Subject: Re:
 [PSUBS-MAILIST] wanted

 Alan,
 I was
 thinking about welding a ring to the remaining section of
 steel ballast tank, then place the dome with a small flange
 on the ring.  Then another ring to clamp the dome's
 flange.  I don't like the idea of drilling the
 flange.  I got a price from Vancouver, 664 dollars for the
 3/8 thick dome.  Got another price for 1/2 in dome from
 Nova Scotia 1,000 dollars US plus shipping.
 Hank--------------------------------------------
 On Tue, 12/9/14, Alan James via
 Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:

  Subject: Re:
 [PSUBS-MAILIST] wanted
  To: "Personal
 Submersibles General Discussion" <personal_submersibles at psubs.org>
  Received: Tuesday, December 9, 2014, 4:02
 PM

  So are you
  going to mount the dome with it's
 flange
  on?ie. weld
  on a
 circle of bolts & have a soft gasket that the
  domesits on
  & then
 another gasket & a  retaining
  ring?The
 reason
  I ask is that the retaining ring
 could also be used in
  the dome
  forming process to clamp the dome down &
 save
  youa
  bit of
 money. Alan

 From: hank pronk via

 Personal_Submersibles
  <personal_submersibles at psubs.org>

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

  Sent:

 Wednesday, December 10, 2014 9:32 AM

  Subject: Re:
  [PSUBS-MAILIST]
 wanted

  Alan,
  I plan

 to remove the entire tank ahead of the vent valve.

 Hank--------------------------------------------
  On Tue, 12/9/14, Alan James via
  Personal_Submersibles <personal_submersibles at psubs.org>
  wrote:

 Subject: Re:
  [PSUBS-MAILIST] wanted
   To: "Personal

 Submersibles General Discussion" <personal_submersibles at psubs.org>
   Received: Tuesday, December 9, 2014, 3:12
  PM

 Hank,are you
   just replacing that conical
 bolt on portion at
  the

 front?Alan

 From: hank pronk via

 Personal_Submersibles
   <personal_submersibles at psubs.org>

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

 Sent:

  Wednesday, December
 10, 2014 9:01 AM

 Subject: Re:
   [PSUBS-MAILIST]
  wanted

   Alan,

 As per

  ABS rules, the sub
 can surface on one ballast tank.  Also

 I
   could drop the lead weight that is in
 the
  front.  I found a

 company in Calgary (3hr
  away)  that will
 blow me a dome 3/8
   thick

 and 3/16 at the apex. I am trying to find a heavier
   one still, but it's a start.  

   Hank

 --------------------------------------------
   On Tue, 12/9/14, Alan James via
   Personal_Submersibles <personal_submersibles at psubs.org>
   wrote:

  Subject: Re:

 [PSUBS-MAILIST] wanted
    To:
 "Personal

 Submersibles General Discussion" <personal_submersibles at psubs.org>
    Received: Tuesday, December 9, 2014,
 2:50
   PM

  Hi

   Hank,these
    people have
 some options.They
   have

   a standard 1/4"
  thick 36"
   diameter product.
    Are
 you

 going to be able to get out of your sub should the
   ballast
    tank
  break?Plastic

   Domes |
  Plastic Hemispheres
 | California Quality Plastics
    Plastic
 Domes and Spheres

          Plastic

  Domes | Plastic
   Hemispheres
 | California
    Quality...Acrylic
   Domes,
  Plastic Domes
 &
    Hemispheres

 HomePlastic Domes & Hemispheres Plastic

   Domes & Hemis
 Plastic
  Spheres Plastic Cylinders
   Plastic
    Bell Jars
 Camer...View
    on

 plastic-domes-spheres...Preview
    by
  Yahoo  
    Alan

     From: hank pronk

 via
    Personal_Submersibles

   <personal_submersibles at psubs.org>

    To:

  personal_submersibles at psubs.org

     Sent: Wednesday,

   December 10, 2014 8:36
 AM
     Subject:

 [PSUBS-MAILIST]
  wanted

    Hi all,
    I am looking
  for
   a 36
    in ish dia
  acrylic dome.  The dome

 will not be a
  pressure

 dome.  I intend to
   remove the front
 ballast tank from Gamma

   and replace it with an

 acrylic dome.  The dome will act
   as
    the new ballast tank.  I discovered
   that sitting in the

 front
  of the sub, the

 visibility is quite
  acceptable if it
    were

  not
 for the steel ballast tank.  
    Any
    leads would be appreciated.

   Hank 

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