[PSUBS-MAILIST] Manipulator arm

Wed Jan 21 18:01:46 EST 2015

Alan,
When I had my tour of Nuytco, I saw the arms well actually a shelf full of them and the valves.  I assumed they were hydraulic, but maybe not.  It could work with sea water, but fresh water could be problematic with freezing.
Hank--------------------------------------------
On Wed, 1/21/15, Alan James via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Manipulator arm
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Wednesday, January 21, 2015, 2:50 PM

 Not sure,
 but don't the "Deep Workers" have
 a hydraulic
 system using sea water, with externalpump &
 valves.Does
 anyone know anything about this?Alan
         From:
 "swaters at waters-ks.com via Personal_Submersibles"
 <personal_submersibles at psubs.org>

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

 Sent:
 Thursday, January 22, 2015 4:58 AM
  Subject: Re:
 [PSUBS-MAILIST] Manipulator arm

 My plan
 was to use O ring seal. I am using a comoensated
 system.Thanks,Scott
 Waters

 Sent from my U.S.
 Cellular® Smartphone

 -------- Original message
 --------
 From: hank pronk via
 Personal_Submersibles  
 Date:01/21/2015 
 9:41 AM  (GMT-06:00) 
 To: Personal
 Submersibles General Discussion  
 Subject:
 Re: [PSUBS-MAILIST] Manipulator arm 

 Scott,
 You
 need to decide on what type of hyd system you are going with
 before you dive into cylinders.  If you are going with a
 pressure compensated system, you can use cylinders with a
 wiper seals on the shafts.  If you not pressure
 compensating, then use cylinders with o-ring seals on the
 shafts.  I would use o-ring sealed shafts regardless.
 Hank--------------------------------------------
 On Wed, 1/21/15, swaters at waters-ks.com via
 Personal_Submersibles
 <personal_submersibles at psubs.org> wrote:

  Subject: Re: [PSUBS-MAILIST]
 Manipulator arm
  To: "Personal
 Submersibles General Discussion"
 <personal_submersibles at psubs.org>

 Received: Wednesday, January 21, 2015, 8:25 AM

  Gotcha.
  I
 got about 8 different suppliers I have found so far with
  SS cylinders. I think I'll order a few to
 play with. I
  am also planning on using
 electric silionoids for
  controlling the
 valves.Thanks,Scott
  Waters

  Sent
  from my U.S.
 Cellular® Smartphone

 -------- Original message --------
  From:
 hank pronk via Personal_Submersibles  

 Date:01/21/2015  6:54 AM  (GMT-06:00) 

 To: Personal Submersibles General Discussion  
  Subject: Re: [PSUBS-MAILIST] Manipulator arm

 Scott,
  Gamma uses air cylinders with
 hydraulic fluid and
  pump.  The hydraulic
 system is very standard except it
  uses air
 cylinders in place of hydraulic cylinders.  

 Hank--------------------------------------------
  On Tue, 1/20/15, swaters at waters-ks.com via
  Personal_Submersibles

 <personal_submersibles at psubs.org> wrote:

   Subject: Re:
 [PSUBS-MAILIST] Manipulator arm
   To:
 "Personal Submersibles General Discussion"
  <personal_submersibles at psubs.org>
   Received: Tuesday, January 20, 2015, 10:27
 PM

   Is Gamma all air cylinders? Do you just
 use
   a air compressor? What happens to the
 air once it is in
  the

 cylinder and you want to lower the cylinder? Is it
   recompressed or somehow expelled? I really
 don't know
   crap about pnematics.
 Haha. Why do all the subs use
   hydrolics
 and not air. For example

 hydro-lek?Thanks,Scott
   Waters

   Sent

 from my U.S. Cellular® Smartphone

   -------- Original message --------
   From: hank pronk via Personal_Submersibles 

   Date:01/20/2015  9:06 PM  (GMT-06:00)

   To: Personal Submersibles General
 Discussion  
   Subject: Re:
 [PSUBS-MAILIST] Manipulator arm 

   Scott,
   Not sure why you want hydraulic cylinders. 
 You want
   air cylinders, they are light
 weight and all
  aluminum. 
   If you use 2 in bore air cylinders you can
 run on a 500
  psi

 system.  Also air cylinders typically have 5/8 rods
  and
   that is the most
 important part.  The rod size is
  what
   the water pressure is pushing back against
 you
  system. 
   Air
 cylinders have a single o ring on the piston and are
   cheap and easy to replace. If you want ss
 rods then just
   replace the chrome rods
 when they wear out.  I made
  my
   own rods for Gamma, easy peezy.

 Hank--------------------------------------------
   On Tue, 1/20/15, swaters at waters-ks.com
 via
   Personal_Submersibles
   <personal_submersibles at psubs.org>
 wrote:

    Subject: Re:
 [PSUBS-MAILIST] Manipulator arm
    To:
 "Personal Submersibles General

 Discussion"

 <personal_submersibles at psubs.org>

 Received: Tuesday, January 20, 2015, 8:52 PM

    Hydrolic.
    Also what size bore does yoursub have
    Hank?Thanks,Scott Waters

    Sent
    from my
 U.S. Cellular® Smartphone

    -------- Original message --------
    From: hank pronk via
 Personal_Submersibles  

 Date:01/20/2015  7:34 PM  (GMT-06:00) 

 To: Personal Submersibles General Discussion  
    Subject: Re: [PSUBS-MAILIST] Manipulator
 arm 

    Are you using hydraulic cylinders or air
 cylinders.

 Hank--------------------------------------------
    On Tue, 1/20/15, swaters at waters-ks.com
 via
    Personal_Submersibles
    <personal_submersibles at psubs.org>
 wrote:

     Subject:
 [PSUBS-MAILIST] Manipulator arm
     To:
 "psubs"

 <personal_submersibles at psubs.org>

   Received: Tuesday, January 20, 2015, 7:51 PM

     Does
     anyone have a reccomendation on a source
 for
   hydrolic

 cylinders? Ofcourse there are tons online, just
   wondering
    if
     someone has a particular place they like
 to get
     them.Thanks,Scott Waters

     Sent
     from my U.S. Cellular®
     Smartphone

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