[PSUBS-MAILIST] Manipulator arm

Sun Jun 1 22:42:00 EDT 2014

I thought the subs in the bone yard were off limits?
Hank 

On Sunday, June 1, 2014 9:32:43 PM, Phil Nuytten via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Vance, if you hit the lottery, P1202 is sitting in our boneyard waiting for 
you! 
Phil 

From: Vance Bradley via 
Personal_Submersibles  
Sent: Sunday, June 01, 2014 1:17 PM 
To: Personal Submersibles General 
Discussion  
Cc: Personal Submersibles General 
Discussion  
Subject: Re: [PSUBS-MAILIST] Manipulator arm

If I hit the Florida lottery, my first stop will be to write the check for 
PC-1201. Would that be sweet, or what? Mind you, at 15,500 pounds, we'll have to 
make some different launch and recovery plans. 
Vance

Sent from my iPhone 

On Jun 1, 2014, at 4:02 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> 
wrote:

Gamma, needs a big brother 
>
>
> 
>On Sunday, June 1, 2014 3:59:08 PM, Vance  Bradley via Personal_Submersibles <personal_submersibles at psubs.org>  wrote:
>
>
>
>Me, too. 
>Vance 
>
>Sent from my iPhone 
>
>On Jun 1, 2014, at 3:56 PM, hank pronk via 
  Personal_Submersibles <personal_submersibles at psubs.org>  wrote:
>
> 
>Vance, 
>>Talk  about the good old days!  I would love to get one of the old Perry  subs.  I would be all over that like white on rice. 
>>Hank 
>>
>>
>> 
>>On Sunday, June 1, 2014 3:40:36 PM,  Vance Bradley via Personal_Submersibles <personal_submersibles at psubs.org>  wrote:
>>
>>
>>
>>Hytorc makes a good line of robust,  self-contained continuous duty pumps, most adjustable from 1500 to 10000  psi. The.120 volt units we used had a universal motor so could be run on  straight off the main buss. We set them up with an accumulator pre- charged  to 1000 psi and a pressure switch set 1000 to 1500 psi. This supplied  pressure to a double bank (6 each) of Parker-Hannifen solenoids controlled  with their own 12 volt tap. Twelve solenoids gave us control for two  manipulators, plus rudder and dive planes (with some variance depending on  the sub). All of this was mounted internally. Eventually, perry went to  external compensated pump/solenoid boxes for the manipulators, but by then  the subs were up in the one point five to three million dollar range. The  resultant increased budget and their growing experience with work class ROVs  made that practical. All the later boats were set up with the external  package, as far as I know.
>>Vance
>>Sent from my 
    iPhone
>>
>>> On May 29, 2014, at 4:36 PM, Hugh 
    Fulton via Personal_Submersibles <personal_submersibles at psubs.org>  wrote:
>>> 
>>> Hank,
>>> That 
    seems like very good advice.  I am wanting to do a manipulator but 
    need
>>> to get some idea of what lifting or forces are 
    required.
>>> What are the pumps you have found to work 
    best.  What pressure do they
>>> develop? I had no idea 
    what a top pump was so googled it and came up with
>>> breast 
    pumps!! I didn't want to make a tit of myself so chased down some
>>> more and found that they are for convertible cars. They look 
    a bit on the
>>> large side diameter wise.  Any brand 
    best?  Cheers,  Hugh 
>>> 
>>> 
>>> -----Original Message-----
>>> From: 
    Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
>>> On Behalf Of hank pronk via Personal_Submersibles
>>> Sent: Friday, 30 May 2014 12:21 a.m.
>>> To: 
    Personal Submersibles General Discussion
>>> Subject: Re: 
    [PSUBS-MAILIST] Manipulator arm
>>> 
>>> 
    Scott,
>>> No matter how you do it, a manipulator will cost 
    some of money.  I have made
>>> many and the tendency 
    seems to be, to try and make them strong to lift a
>>> 
    lot.  Well first off, I think it was Vance that said it best.  A 
    manipulator
>>> is for manipulating not lifting.  With 
    that in mind, large components are
>>> not needed.  
    Simple air cylinders from ebay are  all that is needed.  A 2in
>>> bore and depending on manip design, 4in stroke, maybe as 
    much as 6in stroke
>>> is all you need.  Keep the rod 
    size small at 5/8, that reduces the back
>>> pressure.  
    I have said it before, I love convertible top pumps.  Consider
>>> using one pump per function again purchase from ebay for 125 
    bucks.  No need
>>> for valves, the pump simply runs in 
    reverse to change direction of the
>>> piston. Keep the pumps 
    inside the sub and it is real simple.  As for the arm
>>> itself, if have made them from cardboard first.  You 
    can mock it up that way
>>> and find the best pin locations 
    for the cylinders and ensure the  cylinders
>>> stroke 
    properly without over centering. You can build the arm with square
>>> tubing, use 3 inch aluminum so the cylinders fit inside when 
    the arm is
>>> folded up.  Forget about a wrist until 
    you have lots of time to play around.
>>> Four functions will 
    serve a psubber well and can be built for under 1,000
>>> 
    dollars. I can send you a convertible top pump to play with if you like.
>>> Hank
>>> 
    --------------------------------------------
>>> On Wed, 
    5/28/14, swaters via Personal_Submersibles
>>> <personal_submersibles at psubs.org>  wrote:
>>> 
>>> Subject: [PSUBS-MAILIST] 
    Manipulator arm
>>> To: personal_submersibles at psubs.org
>>> Received: Wednesday, May 28, 2014, 9:31 PM
>>> 
>>> Hey guys. I am
>>> still 
    working on the manipulator arm project for the K  boats. I am a
>>> little overwhelmed as to what direction to  head. I 
    really don't know where
>>> to start because of my  lack 
    of knolwedge. Does anyone have any pointers as
>>> to 
    where  to start? I am thinking about using electric motors rather  
    than
>>> hydrolics just because of the amount of 
    external  operating
>>> peices. Thanks,Scott  
    Waters
>>> 
>>> 
>>> 
>>> Sent
>>> from my U.S. Cellular© Smartphone
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