RE: [PSUBS-MAILIST] Kreideseesub Annular VBT

[MerlinSub@t-online.de]

Hi Brent, small corrections/additions: 

20 Liters (5 Galleons) of Zincreach primers must be in to reach also the inner shell of the VBT.
 
After turning the hull 360 degree we drain the paint out and paint the hull with it.

Its two components Epoxy. Later two layers of wo components Epoxy multicoat and the same trick. 
(never do this with singel conponent paint..) 

And the tank must be grinded and clean before weld tight. 
After you close the welds all pipe openings has to close tempoary and the tank will filed with weld gas - Agron or co2 until the paint will be filled in.   

Additionals:
- Should be inspect via videoendoskop about all 4-5 years. 
- After saltwater dives the boat should do at least one freshwater dive before went in store for longer. 
  (Or fill up the tank onshore with freshwater and drain out.) 

"Be carfull on all details and the big thing may will survive" (carsten)

vbr Carsten 


"Emile van Essen" <emile@airesearch.nl> schrieb:
> Brent ,
> 
>  
> 
> The annular tank is great for saving space. Corrosion is a concern. We apply
> a coating in the tank by putting 2 litres of coating in and turn the sub
> around.
> 
> That will hold 20 years.  Then you have to make 3-4 inspection hatches in..
> 
> Horizontal weldment is a "slingerschot" don't know the English name but it
> is to get more stability with half filled tank.
> 
>  
> 
> Regards, Emile
> 
>  
> 
>   _____  
> 
> Van: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] Namens Brent Hartwig
> Verzonden: zondag 8 februari 2009 5:34
> Aan: PSUBSorg
> Onderwerp: [PSUBS-MAILIST] Kreideseesub Annular VBT
> 
>  
> 
> 
> 
> Greetings Emile and Carsten,
> 
> I've been meaning to ask you guys about the annular hard tank your
> installing between two stiffener rings. Will it be just one tank or have a
> type of baffle arrangement?  I see one horizontal weldment on the left side
> of the picture.  Will you weld on the inner tube section that completes the
> tank, or bolt it on some how?  I'm mostly thinking of how to deal with
> corrosion in that tank.  Have you made any drawings of that tank?
> 
> 
> "inside view. note the hull is on its side.  Later the space between the
> frames will be closed. Then we have a strong stiffener and annular
> hardtank."
> 
> http://picasaweb.google.nl/submachine55/kreideseesub#5294570454569936818
> 
> 
> Regards,
> Szybowski
> 
> 
> 
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> 
> 
> 




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