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[PSUBS-MAILIST] Gas Shocks Used on the Exterior to Lift a Hatch



I like the gas struts mostly because I think they are simple and clean, low weight, quiet, easy to obtain, not really expensive, and they give you a nice smooth motion.
 
Here are the images I was looking for, showing the gas struts on the exterior free flooding area, under the Subeo, Gemini hatch fairings.
 
 
 
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The Deepworker 2000 has a really clean and simple internal mounting means using gas struts.
 
 
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Here is a image of the S101 with two gas struts mounted internally.
 
 
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These two pictures show the Deep Flight Aviator hatch assist means, that look like there might be large gas struts mounted externally.
 
 
 
 
 
 
 
 
  " Modern Art is what happens when painters stop looking at girls and persuade
 
themselves that they have a better idea."    ~ John Ciardi
 
 
Regards,
Brent
 
 

Sent: Thursday, August 27, 2009 4:48 AM
Subject: RE: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501



Hi Cody,  Nice to see ya come in out of the cold. ;}
 
Your speaking of submerged stability here I figure.  So when submerged your dealing with mostly the hinge weight.  I wouldn't expect that to be to much unless you have one of those 3 ton spring hatches I've seen. ;} But yes if it made you list to one side, you could just shift some weight to the other side some place appropriate. The hinge Greg Cottrell worked up for the Great White K-250 out of mostly plastic is nice and light.
 
I've put together a very small and light hinge means that uses the ball joints you see on the gas struts on car hatches, S101 and the Deepworker hatches. I'll also be using the full gas struts to lift my hatch like the deep worker hatches are from the inside. I've also seen them used on the exterior or the sub.
 
Then I'll have a little spring system, that allows for the hatch to move down on the hinge side as the hydrostatic pressure increases. This will make my hatch hinge nice and quite when I open it. No clanking for me.

Regards,

Szybowski



 

From: cody_mcmillan@hotmail.com
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501
Date: Thu, 27 Aug 2009 10:20:18 +0000

Brent, you would still have to compensate for the extra weight on the side. even if your pods are far out. you could simply do that by adding lead to the pod on the other side, as long as you maintain positive bouyancy. or you could put a hatch on eather side. that would fix that problem.

Cody McMillan
Marine Engineer
6046573770



 

From: brenthartwig@hotmail.com
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501
Date: Thu, 27 Aug 2009 03:08:59 -0700



I will have my side tanks out even further then that, so I could mount my hatch that way if I wished.  I currently have a CT crash guard in the way of doing that, and I think I want my hinge in the back for the KLH-500.  I just finished some FEA work on the acrylic cylinder for the new CT config. a few days ago. It looks like it's a tough beast.

Regards,

Szybowski



 

To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501
Date: Wed, 26 Aug 2009 19:36:15 -0400
From: vbra676539@aol.com

That's Pete Hoffman on the right, and he is standing outboard on the port MBT without effecting the trim overmuch, from the look of things. He's not a big man, but the hatch off center and Pete off center combined tell me that the Antibodes is pretty much rock solid on the surface.
Vance


-----Original Message-----
From: Jay K. Jeffries <bottomgun@mindspring.com>
To: personal_submersibles@psubs.org
Sent: Wed, Aug 26, 2009 7:22 pm
Subject: RE: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501

A hatch opening to the side on a PSUB the size of a K-350 is probably not feasible due to hanging all of that weight over on one side at height will result in a severe list. And some loss of buoyancy will also occur as the opened bottom ballast tanks burp.
 
 
R/Jay
 
 
Resepectfully,
Jay K. Jeffries
Andros Is., Bahamas
 
Save the whales, collect the whole set.
 
 
 
 
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Steve McQueen
Sent: Wednesday, August 26, 2009 7:02 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Antipodes/XPC15/PC-1501
 
Brent, this is pretty much my CT minus the hatch.  The CT bolts on so I guess you can change the hinge position as desired.  This is the first orientation to the side I have seen.  I was wondering how you could tell that the dogs can be operated from the exterior?
 
Thanks,
Steve McQueen,
Indianapolis, IN
 


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