Re: [PSUBS-MAILIST] sub bouyancy

[Coalbunny <coalbunny@onewest.net>]

Carsten, how expensive is it to build the CSSX?  Can I get the plans
from you?
Carl


Carsten Standfuß wrote:
> 
> Its depents on your design I think.. With pipe style softtanks
> pods like GEO or JARO maybe PVC is a solution. The internal stern
> compartment and the stern thruster pipes of Sgt.Peppers are
> made from PVC. Also the Thruster Engines housing. There is a special
> cement (Tangit) which works pretty good.
> 
> Make shure that the sub normal storage place is a garage or
> something without to much direct sunlight - PVC get quick old
> under direct sunlight. Do not clean the PVC with a chemical
> with is not useful for Polyvinylchlorid - and never dive with
> the sub in swimming pools witch contains chlorined water.
> 
> I like steel - if you hit something - for example on the surface
> during a "bad weather and back to the surport ship crane" action
> - your stainless steel or aluminium softtanks get maybe a bulge,
> - your PVC tanks maybe breaks in parts.
> 
> During a refit of one of the 10 years old PVC endcaps of the
> Sgt.Peppers Thrusters - the endcap  fall down from the workdesk
> - and breaks in two parts. Maybe that was a result of the influence
> of the oil inside the housing.
> I was very surpriced and purchase a new one - smash this new endcap
> hard to a wall - again and again - no result. Conclusion - If you want
> to use your sub longtime - don't use PVC..
> 
> A very expirence friend and Psuber told my during a visit :
> "Make your sub robust like an tractor"
> Thats is what I reply to my brain before I produce anything
> for the new sub.
> 
> Sgt.Peppers was more or less like a Apollo rocket:
> 100000 parts and each purchase from a company wich made
> the lowest offer... Works - but need all your attention
> and a 3 page predive checklist to make shure that everything
> is  still running..
> CSSX will be more a tractor - no checklist - turn the key
> and run and dive.
> 
> see you - Carsten
> 
> HeyCLOWNeY@aol.com schrieb:
> >
> > thanks for the help carsten,  thats a seriuos sub your building,but the shop
> > your using there makes my mouth water just as much as the sub your building!
> > i dont have any machine shop facilitys here,,just migwelders and the usual
> > home owner tools,,well mabee a tad more then the normal home owner!! ohh ya
> > bye the way i saw a picture of a small sub that i remebered seeing in
> > sanfransico that was using pvc pipe for its soft ballast tanks,,since they
> > are always at ambiant pressure would pvc be a cost cutting soft tank or would
> > it be better to acess the weight one would get from using steel?

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