Re: [PSUBS-MAILIST] Vacum test

I pulled a partial vacuum on my boat to look for leaks. I actually had someone working the vacuum pump and I climbed in the boat with a bottle of soapy water which I squirted at each fitting. While this works to look for leaks, it is not a good test of the structural integrity of the boat as the max depth you can simulated is 34 ft (10m) of fresh water.

Cliff

From: glen brown <glenbrown@vodamail.co.za>
To: personal_submersibles@psubs.org
Sent: Monday, May 25, 2009 2:37:22 PM
Subject: [PSUBS-MAILIST] Vacum test

Hi
Can anyone be so kind to tell me if any one has used vacum to test there sub for leaks and the integrity of there hull when i used to dive for diamonds on the west coast of south africa we used to prime our gravel pipes and pumps with vacum either using a venturi ,milkmachine, car airconditioner motor ect I remember one day we had nothing to use so i decided to use a 300hp tractor engine making an adapter to the air intakeof the engine and using a 44gal drum as a safety resivoir to protect the engine from water i clearly remember how the drum was crushed by the pressure differance any coments.
All the best
Glen S.A

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