[PSUBS-MAILIST] bolt on rings

[MerlinSub@t-online.de via Personal_Submersibles]

All Hatches on Euronaut are made this way.
Surfaces has to be machined - both sides. 
Welding of equipment, seams, holder bracket  etc - closed to the machined  
surface is something to prevent.
 
vbr Carsten
 
 
 
-----Original-Nachricht-----
 
Betreff: Re: [PSUBS-MAILIST] bolt on rings
Datum: 2016-11-11T10:21:52+0100
Von: "emile via Personal_Submersibles" <personal_submersibles at psubs.org>
An: "'Personal Submersibles General Discussion'" 
<personal_submersibles at psubs.org>
 
 
 

Hank,

 

Bolting somethin on a spher without welded reinforcing is normally no-go.  

 

Connecting 2 hemi’s with a 0-ring should be possible with that thickness. 
Centring ring would be useful..

Some hatch seals are made by just machine a 0-ring groove in a thick 
elliptical head.

The sphere segments of one version of the Trieste were glued! The thick 
CrMo steel was impossible to weld.

 

Emile

 

Van: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] 
Namens hank pronk via Personal_Submersibles
Verzonden: vrijdag 11 november 2016 2:52
Aan: Personal Submersibles General Discussion
Onderwerp: [PSUBS-MAILIST] bolt on rings

 

Sean, I know we talked a bit about this idea before but I need a refresher. 
 Can I machine a hole in a heavy sphere and insert a hatch land\reinforcing 
ring assembly that bolts to the sphere.  It looks like Karl Stanley may 
have done that with his front dome.  This idea if feasible makes building a 
deep diver more realistic.  I am thinking  of trying this on my current 
sphere just to see if I can do it.  Better to screw up a cheap sphere 
first.  ;-)

 

Next question, when I look at the Deep Rover sub, it has two hemispherical 
domes coming together on a two sided land.  I am sure the land also gives 
the domes side support.  Why would this design not work with two heavy 
steel hemispherical domes.  I am talking 3 to 4 inches thick.   The  steel 
domes can easily be machined with a flat land and o-ring grooves.  The idea 
is to eliminate a very costly weld and it would be pretty darn nice to 
build with the top half of the hull removed.  

Hank


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