[PSUBS-MAILIST] gamma's arm

[Vance Bradley via Personal_Submersibles]

One issue to keep in mind is that the socket is 316L ss and both the receiver and retainer must be radius machined to take the ball. And not just machined, but polished. Proper function is absolutely dependent on the quality of that surface. It takes a master machinist or a properly programmed CNC machine to get that right.
Vance 

Sent from my iPhone

> On Sep 21, 2014, at 8:01 PM, Vance Bradley via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> That sounds good.
> Vance
> 
> Sent from my iPhone
> 
>> On Sep 21, 2014, at 7:50 PM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> Vance,
>> How about digging up those plans and I will put it together, since Gamma is half way there already.
>> Hank--------------------------------------------
>> On Sun, 9/21/14, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> Subject: Re: [PSUBS-MAILIST] gamma's arm
>> To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>> Received: Sunday, September 21, 2014, 7:34 PM
>> 
>> Hank 
>> from memory I was going to mount the ball the
>> other way around
>> & push the Q through
>> the spindle shaft to it give more range. 
>> The beauty of it was you already had a ball
>> & matching seals inside a housing.
>> Alan
>> 
>> Sent from
>> my iPad
>> 
>>> On 22/09/2014,
>> at 6:24 am, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
>> wrote:
>>> 
>>> 
>>> Alan,
>>> I agree, except
>> you would not have the full range of a true Q ball arm. 
>> You would have total range from side to side but not up and
>> down.  I was genuinely amazed at how well the operator
>> worked that thing.  They were picking up items on the
>> fly!
>> Hank-------------------------------------------
>>> On Sun, 9/21/14, Alan via
>> Personal_Submersibles <personal_submersibles at psubs.org>
>> wrote:
>>> 
>>> Subject:
>> Re: [PSUBS-MAILIST] gamma's arm
>>> To:
>> "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
>>> Received: Sunday, September 21, 2014, 7:11
>> PM
>>> 
>>> Hank,
>>> I
>>> investigated the
>> idea of modifying a large ball valve
>>> to
>> make a Q ball manipulator. It seemed doable
>>> with the
>>> right type
>> of valve.
>>> Alan
>>> 
>>> Sent from
>>> my iPad
>>> 
>>>> On
>> 22/09/2014,
>>> at 2:19 am, hank pronk via
>> Personal_Submersibles <personal_submersibles at psubs.org>
>>> wrote:
>>>> 
>>>> Vance,
>>>> I
>> removed the arm from gamma along with
>> the valve and supporting stuff.  Turns out that package
>> is
>>> chunky, 108 lbs.  Mystery solved! 
>> I have to admit, it was
>>> a bad idea to
>> mount the valve inside the ballast tank
>> area.  A single drop of oil that leaks ends up fogging
>> the
>>> windows.  As part of my
>> renovation, I am mounting the arm
>>> and
>> valve to a drop mechanism under the front ballast tank
>>> along with a thruster package.  The
>> entire assembly
>>> including thrusters
>> will be jettisoning.
>>>> Dan Lance gave
>> me a video to watch called
>>> The dry
>> divers, it shows the Q Ball arm in action.  That
>>> little arm is quite impressive.  I would
>> like to see the
>>> plans for it.  I did
>> not realize it actually used an actual
>> Q ball.
>>>> Hank
>> _______________________________________________
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