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From: giii01@in*.co*
Subject: Re: over-filling & burst disks
To: cavers@co*.ci*.uf*.ed*
Hold on here - I never said anything about helium leaks
or Wakulla or close calls. Someone is attributing some real bullshit
to me. I was kidding about the helium leaking out leaving only the
air because it's nonsense. The early Wakulla dives were done on air.
I was not there.
All I said about overfilling is that it injures the regulators
and makes them subject to failure. I use Posieden first stages to keep
the problem to a minimum. I understand how tanks work and fail.
Thanks for the friendly info from Europe, but my point is
that you could fill your tanks much higher than the rating and risk
regulator failure more often that tank failure so why would you want
to overfill the tanks?
If you want better gas mileage do what it takes to get it. If
you think I'm kidding, watch the tape Cousteau did of diving the
Brittania and you will see how much gas and deco it really takes to
do these dives - very little.
The burst disks are a fire safety measure mostly, but are a
problem if they are not significantly stronger than the pressure
you are using. I use at least double, and I change them regularly.
I never use my cave gear in salt water, and I have a completely
diferent set of wreck and ocean gear. I even keep it at a different
location so I don't get tempted to mix it up.
- George Irvine
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