[PSUBS-MAILIST] cue ball arm

via Personal_Submersibles personal_submersibles at psubs.org
Sat Nov 29 05:55:53 EST 2014


All,
All the cue ball arms have small block and tackle helpers to hold the arm extended at depth. They attach at the gripper base and to the hull right next to the ball and socket. Without it, you have to fight the pressure all the time.
Vance



-----Original Message-----
From: Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org>
To: 'Personal Submersibles General Discussion' <personal_submersibles at psubs.org>
Sent: Fri, Nov 28, 2014 11:11 pm
Subject: Re: [PSUBS-MAILIST] cue ball arm


Hank,
1/2" Tube / rod at 200 ft (approx 100 psi)will require about 20 lbs force to
push out and 5/8" rod will take about 30 lbs.  Keep it in mind.

Hugh



-----Original Message-----
From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of hank pronk via Personal_Submersibles
Sent: Saturday, 29 November 2014 2:50 p.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] cue ball arm


Hugh,
I have machined the ball to accept a 5/8 rod for testing purposes only.  I
am waiting for the plans to arrive before I go further.  I just recently saw
that video and was amazed at how well it worked.
Hank--------------------------------------------
On Fri, 11/28/14, Hugh Fulton via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] cue ball arm
 To: "'Personal Submersibles General Discussion'"
<personal_submersibles at psubs.org>
 Received: Friday, November 28, 2014, 8:40 PM
 
 Hank,
 I
 am qualified enough to ask what works the best. Still want  to hear from
Lance. 
 There
 is a lot of art as well as science in the building of these  things. 
 Generally these things have all
 been visited before by someone.  Once we  understand all the issues then we
can look at  improving it or not.
 As I said this is a
 fascinating project.  I saw the video and the ease that  the operator was
picking up objects on the move  some time ago and it was  simple and
effective.  Anyway What is the diameter of the internal rod  and  the OD of
the tube you are using? I am  thinking of a way of pressure  compensating
it. Chs, Hugh
 
 -----Original
 Message-----
 From: Personal_Submersibles
 [mailto:personal_submersibles-bounces at psubs.org]
 On Behalf Of hank pronk via
 Personal_Submersibles
 Sent: Saturday, 29
 November 2014 12:05 p.m.
 To: Personal
 Submersibles General Discussion
 Subject: Re:
 [PSUBS-MAILIST] cue ball arm
 
 
 Hugh,
 You are
 likely the most qualified and equipped to figure this out.  I must  say, I
am getting good results from  my setup.
 Hank--------------------------------------------
 On Fri, 11/28/14, Hugh Fulton via
 Personal_Submersibles
 <personal_submersibles at psubs.org>
 wrote:
 
  Subject: Re:
 [PSUBS-MAILIST] cue ball arm
  To:
 "'Personal Submersibles General
 Discussion'"
 <personal_submersibles at psubs.org>
  Received: Friday, November 28, 2014, 4:03  PM
  
  Hank,
 
 OK
  I never realised that.  Very
 intesting.  The cue ball
  (plastic) on a
  curved SS seat. Reversed SS
 
 Ball on plastic seat. 
  No doubt there is
 a
  reason behind it all where we need a bit  of history.
  Vance, are you listening?
 They will have  tried a ball valve design at  some  stage most  probably 
and found that  the lowest friction  is from the  design  they came up
with.  We  usually have a torque of about 5  ft lbs but  again it is for
6000 psi  service.  I need  to have a play with this as it  is quite
fascinating.  Chs,  Hugh
  
  
  
  -----Original
  Message-----
  From: Personal_Submersibles
 
 [mailto:personal_submersibles-bounces at psubs.org]
  On Behalf Of hank pronk via
 
 Personal_Submersibles
  Sent: Saturday, 29
  November 2014 9:42 a.m.
  To:
 Personal
  Submersibles General Discussion
  Subject: Re:
  [PSUBS-MAILIST]
 cue ball arm
  
  
  Hugh,
  Now that
  is interesting!  Just so you know, the  original cue ball  sits on a  ss
shaped  seat that matches the  ball perfectly.  The seal is a  regular 1/8 
in  dia o-ring mounted at the  equator of the cue  ball.
 
 Hank--------------------------------------------
  On Fri, 11/28/14, Hugh Fulton via
  Personal_Submersibles
  <personal_submersibles at psubs.org>
  wrote:
  
  
 Subject: Re:
  [PSUBS-MAILIST] cue ball
 arm
   To:
 
 "'Personal Submersibles General
 
 Discussion'"
  <personal_submersibles at psubs.org>
   Received: Friday, November 28, 2014, 3:27  PM
   
   Hank, A metal
 ball
  is
   fine.  Brass is
 likely to corrode
  faster than 316 SS  if
 it is not looked  after. The harder the  better of  course but if  it is
kept  greased  then  you  won't  have a problem.  Forget  the seal having 
to be curved  for the  ball.  We use 45  degree seats at
  6000
 psi.  There is less torque  required on a 45  degree seat  than a  fully 
shaped one and the  sealing  is  better.  We  allow  about 3 to
  4
 thou of crush from finger tight to  fully  torqued  bolts.
  Because you are only  doing low
  pressure you can get more  angle  with the  seat contact to give you a
greater movement.
 As  I  said before  the secret  is in the  grease  for  ease.  Do you have
an oxygen  grease?  White  stuff.  Will reduce the  friction by 60%. 
Regards,  Hugh     
   
  
  
   -----Original Message-----
   From: Personal_Submersibles
 
 [mailto:personal_submersibles-bounces at psubs.org]
   On Behalf Of hank pronk via
 
 
  Personal_Submersibles
  
 Sent: Saturday, 29
   November 2014 8:59
 a.m.
   To:
  Personal
   Submersibles General Discussion
   Subject: Re:
  
 [PSUBS-MAILIST]
  cue ball arm
   
   
   Hi
 Hugh,
   I
  
  don't have the original drawings yet, but
 Vance has  them  and is sending
 them to
 me.
   I
   am going to
 experiment with
  a brass ball to replace the
 cue  ball.  With  the modified ball valve I
 can  use a metal  ball now.  Any thoughts on
 that.
  
 
 Hank--------------------------------------------
   On Fri, 11/28/14, Hugh Fulton via
   Personal_Submersibles
  
 <personal_submersibles at psubs.org>
   wrote:
   
 
  
  Subject: Re:
  
 [PSUBS-MAILIST] cue ball
  arm
    To:
  
 
 "'Personal Submersibles General
 
 
  Discussion'"
  
 <personal_submersibles at psubs.org>
    Received: Friday, November 28, 2014, 2:46 
 PM
    
    Hi Hank,
    Do you or anyone else, have a cross
  section  of  the cue-ball, glands, and
  arm  mechanism  anywhere?
 
  
  I would like to have
  
 a look at the
    seal side as well.  We
 make
   ball valves  and  have done a lot
 of work  on  different designs of seals.
 
   
   Might
 be able to come up with one that is  easier to  move.  We
 use an
 oxygen  grease  which is  magic
 for reducing friction. Goes under  the name
 of  "slippery pooze"
  here in the  workshop.
   
 Regards, Hugh.
   
   
    
    -----Original
  
  Message-----
    From:
 
 Personal_Submersibles
   [mailto:personal_submersibles-bounces at psubs.org]
    On Behalf Of hank pronk via
  
  
  
 Personal_Submersibles
   
 
 Sent: Saturday, 29
    November 2014 5:42
  a.m.
    To:
   personal_submersibles at psubs.org
    Subject: [PSUBS-MAILIST] cue ball arm
    
    Hi Alan,
   
   I
   
 just
  added a picture of the cue ball arm, 
 ball assembly,  installed on  Gamma. 
 You  can see the  range  of motion and how
 it mounts to the  sub.
    Hank
   
  
 
 _______________________________________________
    Personal_Submersibles mailing list
    Personal_Submersibles at psubs.org
    http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
     
    
  
 
   __________
   
 Information from
  ESET NOD32
   Antivirus, version of virus
 
 signature
   database 10797 (20141128)
  __________
    
    The
  message was
    checked by ESET NOD32
 
 Antivirus.
    
    http://www.eset.com
  
   
   
    
 
   
  
  
 
   __________
   
 Information from ESET NOD32
  
  Antivirus, version of virus  signature
  
  database 10797 (20141128) 
 __________
   
  
    The message was
   
  checked by ESET NOD32 Antivirus.
    
    http://www.eset.com
  
   
   
    
  
  
  
 
 _______________________________________________
    Personal_Submersibles mailing list
    Personal_Submersibles at psubs.org
    http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
    
   
  
 
 _______________________________________________
   Personal_Submersibles mailing list
   Personal_Submersibles at psubs.org
   http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
    
   
  
  __________
   Information from
 ESET NOD32
  Antivirus, version of virus 
 signature
  database 10798 (20141128) 
 __________
   
   The
 message was
   checked by ESET NOD32
 Antivirus.
   
   http://www.eset.com
 
  
  
    
  
 
  
  __________
   Information from ESET NOD32
 
 Antivirus, version of virus  signature
 
 database 10798 (20141128)  __________
  
 
   The message was checked by
  
  ESET NOD32 Antivirus.
   
   http://www.eset.com
 
  
  
   
  
 
  
 
 _______________________________________________
   Personal_Submersibles mailing list
   Personal_Submersibles at psubs.org
   http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
  
 
 _______________________________________________
  Personal_Submersibles mailing list
  Personal_Submersibles at psubs.org
  http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
   
  
 
 __________
  Information from ESET NOD32
 Antivirus, version of virus  signature
 database 10798 (20141128)  __________
  
  The message was
  checked by ESET NOD32 Antivirus.
  
  http://www.eset.com
  
 
   
  
 
 __________
  Information from ESET NOD32
 Antivirus, version of virus  signature
 database 10798 (20141128)  __________
  
  The message was
  checked by ESET NOD32 Antivirus.
  
  http://www.eset.com
  
 
  
  
 
 _______________________________________________
  Personal_Submersibles mailing list
  Personal_Submersibles at psubs.org
  http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
 
 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
  
 
 __________
 Information from ESET NOD32 Antivirus, version of virus
 signature
 database 10798 (20141128)
 __________
 
 The message was
 checked by ESET NOD32 Antivirus.
 
 http://www.eset.com
  
 
 
 __________ Information
 from ESET NOD32 Antivirus, version of virus signature
 database 10799 (20141128) __________
 
 The message was checked by
 ESET NOD32 Antivirus.
 
 http://www.eset.com
  
  
 
 __________
 Information from ESET NOD32 Antivirus, version of virus
 signature
 database 10799 (20141128)
 __________
 
 The message was checked by
 ESET NOD32 Antivirus.
 
 http://www.eset.com
  
 
 
 _______________________________________________
 Personal_Submersibles mailing list
 Personal_Submersibles at psubs.org
 http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles

_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
 

__________ Information from ESET NOD32 Antivirus, version of virus signature
database 10799 (20141128) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com
 
 

__________ Information from ESET NOD32 Antivirus, version of virus signature
database 10799 (20141128) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com
 


_______________________________________________
Personal_Submersibles mailing list
Personal_Submersibles at psubs.org
http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20141129/4092530d/attachment-0001.html>


More information about the Personal_Submersibles mailing list