[PSUBS-MAILIST] Manipulator arm

Wed Jan 21 18:37:07 EST 2015

I reveiwed my pictures and Nuytco uses hydro-lek manipulator arms with a resevor that looks just like a air bag for semi trucks. I am pretty sure they are hydraulic.
Thanks,
Scott Waters

Sent from my U.S. Cellular® Smartphone

-------- Original message --------
From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> 
Date:01/21/2015  5:01 PM  (GMT-06:00) 
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Subject: Re: [PSUBS-MAILIST] Manipulator arm 

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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