[PSUBS-MAILIST] Manipulator Hydrolic question

[hank pronk via Personal_Submersibles]

Scott,
You can take a minkota motor and drive a small hy pump  and valve bank all submerged in Marvellous mystery oil.  Talk about simple and reliable.
Hank  --------------------------------------------
On Mon, 1/12/15, swaters at waters-ks.com via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Manipulator Hydrolic question
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Monday, January 12, 2015, 7:47 PM
 
 Cool. I
 am going to make one first for Trustworthy and spend some
 time with it before I build the deep sub. But it will take a
 few years to design. I am planning two arms
 on Trustworthy. One 5 function manipulator arm, one 3
 function with tooling and a dredge
 pump.Thanks,Scott Waters
 
 Sent
 from my U.S. Cellular® Smartphone
 
 -------- Original message --------
 From: hank pronk via Personal_Submersibles  
 Date:01/12/2015  6:29 PM  (GMT-06:00) 
 To: Personal Submersibles General Discussion  
 Subject: Re: [PSUBS-MAILIST] Manipulator Hydrolic question 
 
 
 Scott,
 If you can submerge the pump motor in the oil then you can
 have a square hyd reservoir with a rubber lid and your done,
 like the old school battery box.
 Hank--------------------------------------------
 On Mon, 1/12/15, hank pronk via Personal_Submersibles
 <personal_submersibles at psubs.org> wrote:
 
  Subject: Re: [PSUBS-MAILIST] Manipulator Hydrolic question
  To: "Personal Submersibles General Discussion"
 <personal_submersibles at psubs.org>
  Received: Monday, January 12, 2015, 7:26 PM
  
  Scott, that is a GREAT
  idea, particularly in your deep sub.
  Hank
  --------------------------------------------
  On Mon, 1/12/15, via Personal_Submersibles
  <personal_submersibles at psubs.org>
  wrote:
  
   Subject: Re:
  [PSUBS-MAILIST] Manipulator Hydrolic question
   To: "Personal Submersibles General
  Discussion" <personal_submersibles at psubs.org>
   Received: Monday, January 12, 2015, 7:13 PM
   
   Hank,
    
   My thought was to have no
  hydraulic penetrators
   into the sub and to
  only have a subconn to run
  
  the manipulator. The pumps would be submerged in the
   hydraulic reservoir outside of the sub and
  would be pressure
   compensated.  Good or
  bad idea?
    
   Thanks,
   Scott Waters  
    
   
   -------- Original
   Message --------
   Subject: Re:
  [PSUBS-MAILIST] Manipulator Hydrolic question
   From: hank pronk via Personal_Submersibles
   <personal_submersibles at psubs.org>
   Date: Mon, January 12, 2015 4:46 pm
   To: Personal Submersibles General
  Discussion
   <personal_submersibles at psubs.org>
   
   Scott,
   The
  pump runs the whole time the arm is in use. When you
   want to grab the gold filled chest, turn on
  the pump and use
   the arm then turn it off
  when your done. I would keep it
   simple,
  besides the arm functions are continuous. It
   probably takes less power to keep the pump
  running rather
   than start and stop
  constantly. You could use multiple small
  
  pumps that activate with each function, might be simpler
  in
   the end. No valve bank and less
  complicated.
   Hank
  
  --------------------------------------------
   On Mon, 1/12/15, via Personal_Submersibles
  <personal_submersibles at psubs.org>
   wrote:
   
  
  Subject: [PSUBS-MAILIST] Manipulator Hydrolic question
   To: "psubs"
 <personal_submersibles at psubs.org>
   Received: Monday, January 12, 2015, 5:54 PM
   
   Do
   most
  submarine manipulator arms have a pump for each
   cylinder controlled electronically from the
  inside of the
   sub or do they have one pump
  that is continuously running
   and hoses go
  in the sub and controlled with valves? Or
  
  perhaps another way? 
    
  
  My excavators in my company have one pump that is
   engine driven and it runs continuously an the
  cylinders are
   actuated by valves. Seems
  impractical to me to have a
   battery driven
  pump that runs continuously. 
    
   Thanks,
   Scott Waters
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