Rebreather World - View Single Post - Diluent selection and the great alpinist v siege debate

SteveL · 31st December 2006, 01:38

Dave - firstly hows the new toys??? I was at Cols shop last week from what I heard

Back to the thread - I have to say that I agree with your logic - Personally I dive much like you on the 15.5 - but mount 5l and thats it on most dives to about 60m (200ft) - I get hammered for it but I feel you have to put some faith in the loop - the way the 15.x is designed and the shear number of hours on the unit are impressive. I can always turn it off and run semi closed - which will get me a long way off the bottom then go the 5l. On all of these dives I run 21/35 premix - which is breathable at 200ft no problems - and the He is a nice to have -

I agree that if you rip a hose off and have a total and complete unrecoverable flood things will be tricky - BUT if you play the numbers game the chances of this are slim - and on the 15.x possibly slimmer - weakest link is the hoses - so I have changed to the mil spec cooper hoses then wrapped them in a double layer canvas - simple loop protection - KISS

My philosophy is that the loop is golden protect the loop - if you a slowly and quietly moving around in a wreck the chances of tearing the loop are slim in my view - scootering flat out in a cave possible higher -

I think that carrying all that extra crap is just potentially compounding any potential problems - so if you dont need it dont carry it.

Using gas with a high PPO2 all helps to get you out of the water faster. As soon as you start to ascend the PPo2 is heading south at a rapid rate anyway -

I am alway fearful of running hypoxic mixes when you dont have to as it is all to easy to jump in the water with a crap load of tanks on fight a ripping current to the anchor and pass out - sure the adv has kicked in but its not giving you a life sustaining mix - There has been a fatality here in Sydney because of this senario.

It is scary how fast the loop PP02 drops if you climb the rope fast.

Like flying - any landing you can walk away from is a good one - similarly any dive you can climb in the boat from is a good one.

Dive simple dive safe

Steve L

31st December 2006, 01:38	#20 (permalink)
SteveL Custom Title Allowed! Current Rebreather/s: MK 15.X Other Rebreather/s: Inspiration Classic Join Date: Nov 2005 Location: Sydney Australia Posts: 222	Re: Diluent selection and the great alpinist v siege debate Dave - firstly hows the new toys??? I was at Cols shop last week from what I heard Back to the thread - I have to say that I agree with your logic - Personally I dive much like you on the 15.5 - but mount 5l and thats it on most dives to about 60m (200ft) - I get hammered for it but I feel you have to put some faith in the loop - the way the 15.x is designed and the shear number of hours on the unit are impressive. I can always turn it off and run semi closed - which will get me a long way off the bottom then go the 5l. On all of these dives I run 21/35 premix - which is breathable at 200ft no problems - and the He is a nice to have - I agree that if you rip a hose off and have a total and complete unrecoverable flood things will be tricky - BUT if you play the numbers game the chances of this are slim - and on the 15.x possibly slimmer - weakest link is the hoses - so I have changed to the mil spec cooper hoses then wrapped them in a double layer canvas - simple loop protection - KISS My philosophy is that the loop is golden protect the loop - if you a slowly and quietly moving around in a wreck the chances of tearing the loop are slim in my view - scootering flat out in a cave possible higher - I think that carrying all that extra crap is just potentially compounding any potential problems - so if you dont need it dont carry it. Using gas with a high PPO2 all helps to get you out of the water faster. As soon as you start to ascend the PPo2 is heading south at a rapid rate anyway - I am alway fearful of running hypoxic mixes when you dont have to as it is all to easy to jump in the water with a crap load of tanks on fight a ripping current to the anchor and pass out - sure the adv has kicked in but its not giving you a life sustaining mix - There has been a fatality here in Sydney because of this senario. It is scary how fast the loop PP02 drops if you climb the rope fast. Like flying - any landing you can walk away from is a good one - similarly any dive you can climb in the boat from is a good one. Dive simple dive safe Steve L
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