[PSUBS-MAILIST] gamma's arm

Mon Sep 22 01:45:46 EDT 2014

No sense in messing up a good thing !

--- 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 22:33:37 -0400

It grew from Mart Toggweiler's camera housing and was installed on Submaray and all four Nektons.
Vance

Sent from my iPhone

> On Sep 21, 2014, at 10:22 PM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> 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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