perdidochas
Contributor
Lots on answers from people who don't like spare air. That is not what I am looking for. I know and accept that many many many MANY MANY people think spare air is worthless. I accept that you have come to that conclusion.
I want to know if people who are trusting spare air have tested out the gear to see how it works according to how they think it will work.
So back to my original 7 questions to THE OWNERS OF SPARE AIR AND ONLY THOSE WHO OWN SPARE AIR.
Those of you who are not spare air owners for a number or reasons have concluded that this does not work. I am asking those who own and are depending on it if they have tested it out in real work conditions under the water.
For those of you who don't think spare air is a good idea, why not be quiet and allow some people who own it to get the idea to go out and test--then they will know you are right which should make you feel good about yourself and that you had part in saving their life!
If you do not own or have not tested spare air in the water under 60' please do not respond to this thread. I am asking for the experience of people who have actually used the device. If you own it and have not used it, I ask that you test it and post. If you test it, please breath fast and hard like you might under a stressfull situation. Please do this with plenty of gas on your back from your main tank.
Why test it? Is 1.7 cu ft of air somehow different in a spare air than it is in a scuba tank. To convert that to PSI in a 80 cu. ft cylinder (at 3000 psi), a spare air has about the equivalent of 64 psi. I need more than 64 psi to surface from 70 feet.