[PSUBS-MAILIST] new Gamma pictures

Tue Jan 21 10:49:20 EST 2014

The designer tells me that on reflection, he would make some changes should another Nekton ever be built. A thicker forward and aft hemisphere to get away from the cruciform ribbing for one, and a slightly thicker hatch dish to get rid of those tiny ribs, for another. As Hank will tell you, whoever welded those subs up (and I know who it was) wasn't afraid of welding. And a good bit of it could have been avoided with just the changes mentioned. The dished head ribbing was a belt and suspenders approach from a day long before the computer analysis and risk analysis software that is currently available.
Vance

-----Original Message-----
From: hank pronk <hanker_20032000 at yahoo.ca>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Sent: Tue, Jan 21, 2014 10:26 am
Subject: Re: [PSUBS-MAILIST] new Gamma pictures

James,
The ribs are for strengthening the dish.  The hatch is quite light, mind you it is only 18in dia.  
Hank

  On Tuesday, January 21, 2014 8:11:46 AM, James Frankland <jamesf at guernseysubmarine.com> wrote:

Hank,
That would be good actually thanks.  Im probably going to make a new hatch soon enough.  Ive got a spare dish.    What are the ribs doing that are underneath the black locking bars?  Are they strengtheners for the dish?  or part of the latch mechanism?  or a bit of both maybe?
Regards
James

On 21 January 2014 13:34, hank pronk <hanker_20032000 at yahoo.ca> wrote:

James
Thank you,
If you like I can take detail pictures of the hatch latch mechanism.  You would have no trouble replicating it.  
Hank 

On Tuesday, January 21, 2014 2:52:31 AM, James Frankland <jamesf at guernseysubmarine.com> wrote:

Hank,
Gamma looks fantastic!  Youve done a great job.  Im so jealous of that hatch locking mechanism!  

Havard, pics are on psubs.org in projects.  Look for Gamma, or Hank.

Kind regards
James

On 21 January 2014 08:00, Håvard Hardy <haavard.hardy at gmail.com> wrote:

where can i see this pictures?:)

2014/1/21 hank pronk <hanker_20032000 at yahoo.ca>

Joe,
Thank you, 
The arm is swung into a parallel position when under way.  There is reference in the operating information to remove the retaining strap.  I assume when in transport the arm is secured in some way.  As for when towing, the hydraulic cylinder that controls swing will hold it strait. 
Hank

On Monday, January 20, 2014 6:44:06 PM, Joe Perkel <josephperkel at yahoo.com> wrote:

BTW, how flush does that arm fold against the hull for towing and what holds it there?

Joe

Sent from Yahoo Mail for iPad

From: Joe Perkel <josephperkel at yahoo.com>; 
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>; 
Subject: Re: [PSUBS-MAILIST] new Gamma pictures 
Sent: Tue, Jan 21, 2014 1:08:28 AM 

Hank your commitment and results are an inspiration!

Kudos also to Vance for insuring that a piece of historical hardware referenced in the Busby text, went to your very capable hands. 

A decision I'm certain was not arbitrary.

Joe

On Jan 20, 2014, at 5:27 PM, hank pronk <hanker_20032000 at yahoo.ca> wrote:

Thanks' guys, I am pretty pleased with how it is turning out.
Rick, the arm came with the sub.  I rebuilt it, that simply means I took it apart and painted it.  I put new seals and rods in the cylinders.  Pretty nice set up.
Hank

On Monday, January 20, 2014 3:20:59 PM, Land N Sea <landnsea1 at hawaiiantel.net> wrote:

Impressive looking manipulator! How did you figure out how long each arm should be, size rams, claw construction, what will be the lifting capacity of the arm fully extended? did you make a VBT up forward to keep the sub trimmed while picking up a load? What are the arms made of? any construction pictures of it while you went? 

Rick

From: Alan James 
Sent: Monday, January 20, 2014 12:08 PM
To: Personal Submersibles General Discussion 
Subject: Re: [PSUBS-MAILIST] new Gamma pictures

Wow, well done Hank.
It's great being able to follow the progress.
I think we should have a psub conference at your place. You have a good collection of subs now.
We could all dive in one.
Alan

From: hank pronk <hanker_20032000 at yahoo.ca>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, January 21, 2014 9:14 AM
Subject: [PSUBS-MAILIST] new Gamma pictures

I just posted four new pictures showing my progress of gamma as promised.  I was hoping to operate the manipulator today but the hyd pump is not pumping oil.  I am hoping the oil is to heavy and cold to get sucked into the pump, that will be an easy fix.
Hank

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