[PSUBS-MAILIST] gamma's arm

Sun Sep 21 22:22:02 EDT 2014

Has more than one sub had a cue ball arm?

Brian

--- personal_submersibles at psubs.org wrote:

From: Vance Bradley via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] gamma's arm
Date: Sun, 21 Sep 2014 21:15:28 -0400

Thanks. I'll look into it. As to bronze balls, well..... Besides. Q balls have worked for forty years. Why change now? Hard to beat a perfect radius for under twenty bucks.
Vance

Sent from my iPhone

> On Sep 21, 2014, at 9:05 PM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> You can buy the set up for that for a lathe, both to make a ball and a socket.  Maybe make the ball out of bronze.  
> 
> Brian
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] gamma's arm
> Date: Sun, 21 Sep 2014 17:39:17 -0700
> 
> 
> Vance,
> I have a solution for that, since I am missing the outer retainer. I can make a socket that is roughly the right size and use the Q ball as a mold and fill the void with polyurethane.  The inner socket can be polished in place.
> Hank--------------------------------------------
> On Sun, 9/21/14, Vance Bradley 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, 8:15 PM
> 
> 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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