[PSUBS-MAILIST] cue ball arm

[hank pronk via Personal_Submersibles]

Alan,
I am confident it will be okay.  I sure am pleased that it is working again, with the full angle the arm is not in the way inside the sub also.
Hank--------------------------------------------
On Sat, 11/29/14, Alan 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: Saturday, November 29, 2014, 3:10 PM
 
 Hi Hank,
 I got the kiddy size pool ball wrong anyway.
 Good that it won't come right through if it
 colapses.
 Alan
 
 
 Sent from my iPad
 
 > On 30/11/2014, at 8:53
 am, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 wrote:
 > 
 > 
 > Alan,
 > The name cue
 ball arm is misleading a bit.  The arm uses a snooker ball
 regulation size 2 1/8 +- .oo5 in.  I see no need to improve
 the outer seat, it has only one purpose, that is to keep the
 ball in place.  The ball cracked when I drilled it because
 I was not experienced in machining this material.  I have
 since machined a perfect hole with o-ring groove.  The
 trick is to increase the drill size very gradually until a
 cutter fits in the hole.  If it cracked while in plase it
 would be pushed together tight by the shape of the seat.
 >
 Hank--------------------------------------------
 > On Sat, 11/29/14, Alan James 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: Saturday, November 29, 2014,
 2:29 PM
 > 
 > Looks
 like
 > you have a lot of angle there
 Hank.Maybe you
 > could use a spare pool
 ball & abrasive paste to get a
 >
 perfect seat for it?You said
 > that one
 pool ball cracked while drilling. I hope
 > the pool ball can't push through if it
 breaks
 > up.The size
 >
 pool ball you are using is a children's
 > size. 
 > I wonder
 > if you went to an adult size ball whether
 it would
 > be constructed of a better
 material?Alan
 > 
 > 
   From: hank pronk via
 >
 Personal_Submersibles
 > <personal_submersibles at psubs.org>
 > 
 > To:
 > personal_submersibles at psubs.org
 
 >  Sent: Sunday, November
 > 30, 2014 7:51 AM
 > 
 Subject:
 > [PSUBS-MAILIST] cue ball
 arm
 > 
 > 
 > Alan,
 > Have a look at
 my cue
 > ball arm assembly at Gamma
 restoration.  I repaired the
 > original
 seat for the cue ball.  After Hugh said to forget
 > about making a curved seat, I realized I
 could make my own
 > seat on a 45 degree
 angle.  I made the second half of the
 >
 assembly with a home made plastic seat machined from ABS.
 
 > I installed it in Gamma and it turns
 smooth as glass and has
 > the original
 amount of range.  With home made plastic
 > seats, it is a breeze to make this because
 the o-ring still
 > does the sealing. 
 
 > Now I just need the
 > plans and my new cue ball to finish the
 arm.  
 > Vance, 
 > I
 was thinking about
 > mounting an air
 cylinder horizontal inside the sub to pull
 > on the block and tackle cable.  The
 deeper I go the more
 > air pressure I
 add, it will be like an adjustable spring.
 > Hank
 >
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 > 
 > 
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