Re: [PSUBS-MAILIST] Pressure testing with a vacuum pump

[MerlinSub@t-online.de]

Just a idea: bring most US Psubers together- each speed 100-200 dollar or so and one of them 
build a steel test pressure test tank which all sponsors can be use.. 
Can be build from used material as Reinhard did here in Europoe for us. 
The psuber with the biggest sub should term the size. 
The psubers with the greatest dive detph the pressure resitance..

http://www.euronaut.org/content/gfx/old_projects/IMG_6089a.jpg
http://www.euronaut.org/content/gfx/old_projects/IMG_6098a.jpg
http://www.euronaut.org/content/gfx/old_projects/IMG_6099a.jpg
http://www.euronaut.org/content/gfx/old_projects/IMG_6102a.jpg

PS: The Psubers with the smallest Sub has to spent more money because he has the most fun with the tank 
- he can dive up and down and forward and aft in it.. ;-o

Tank can any old big steel pipe or earth tank. Saftey factor can be low with an overpressure valve. 
And internal pressure is anyway not so critical. Fill the tank with water and pressurize the 
water with a highpressure water cleaner.. 

Reinhards tank was below 4000 USD or so and the water he use comes from his swimmingpool 
and gets after use back to it.. 

Put the tank on a old truck flatbed and bring it with to the next convention would be just perfect.. 

vbr Carsten


"Alan James" <alanjames@xtra.co.nz> schrieb:
> Thanks everyone for clearing that up,
> I was thinking that if you had a pump that could produce 250 psi & it's sucking
> from somewhere, that you could attach it's intake to a hull & produce a negative
> 250 psi pressure. Have done a bit of "Googling" with your direction & have sought 
> of got my head round it.
> Darn! it seemed a lot easier option than dropping my hull down a deep lake on a long rope.
> Regards Alan
> 
> 
> ----- Original Message ----- 
> From: "Jens Laland" <laland@artematrix.org>
> To: <personal_submersibles@psubs.org>
> Sent: Wednesday, January 19, 2011 1:19 PM
> Subject: Re: [PSUBS-MAILIST] Pressure testing with a vacuum pump
> 
> 
> > This one I find quite useful with regards to measuring vacuum, ref
> > 
> > http://traktoria.org/files/instrumentation/vacuum/Pressure_Conversion_Table1.pdf
> > 
> > Best regards,
> > Jens Laland
> > 
> > 
> > 
> > 
> > 
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