Rebreather World - View Single Post - To BOV or not BOV

lizardland · 26th November 2007, 09:30

Quote: (Originally Posted by Dave Sutton)

Here's the fallacy: NO YOU CAN'T. Not in any sort of real C02 hit. ESPECIALLY not deep.

By the time you can even think that you need to do it, you cannot hold your breath for 2 seconds. You'll drown. To think otherwise is wishful thinking. I used to believe that what you write was true. My experience proved otherwise. I'm wiser now...

Dave

I flooded my CK a couple of weeks ago (before I fitted the Mares BOV) when I went diving with my dil switched off and was having to add dil by breathing my OC offboard gas into the loop (OK, I admit my argon bottle had fallen out of place, I couldn't reach the dil valve for it and there was no way I was surface swimming back to shore just to fix it). Anyway, I cocked up (thought the DSV was fully closed) and let a load of water into the loop and after a few minutes I could feel CO2 rising. Luckily I bailed early, even so I was struggling holding my breath in the time it took to get off the loop and onto the reg bungeed around my neck, even managing to suck a load of water in at the same time. I freedive and spearfish and I do apnea training most days, I can do 6min+ in a static apnea and I was struggling with a couple of seconds to get to a reg in a minor CO2 event. I've no doubt that trying to get to another reg with a major event happening is not going to be a good day.

26th November 2007, 09:30	#31 (permalink)
lizardland Yak Current Rebreather/s: MK 15.X Home Build Other Rebreather/s: Classic Kiss Home Build Join Date: Mar 2005 Location: North... Posts: 1,302	Re: To BOV or not BOV - Split From NACD Cave Summit Quote: (Originally Posted by Dave Sutton) Here's the fallacy: NO YOU CAN'T. Not in any sort of real C02 hit. ESPECIALLY not deep. By the time you can even think that you need to do it, you cannot hold your breath for 2 seconds. You'll drown. To think otherwise is wishful thinking. I used to believe that what you write was true. My experience proved otherwise. I'm wiser now... Dave I flooded my CK a couple of weeks ago (before I fitted the Mares BOV) when I went diving with my dil switched off and was having to add dil by breathing my OC offboard gas into the loop (OK, I admit my argon bottle had fallen out of place, I couldn't reach the dil valve for it and there was no way I was surface swimming back to shore just to fix it). Anyway, I cocked up (thought the DSV was fully closed) and let a load of water into the loop and after a few minutes I could feel CO2 rising. Luckily I bailed early, even so I was struggling holding my breath in the time it took to get off the loop and onto the reg bungeed around my neck, even managing to suck a load of water in at the same time. I freedive and spearfish and I do apnea training most days, I can do 6min+ in a static apnea and I was struggling with a couple of seconds to get to a reg in a minor CO2 event. I've no doubt that trying to get to another reg with a major event happening is not going to be a good day. __________________ Can you imagine drifting along in the sea with your mouth open and a load of f**ing plankton going in? You'd like it, would you? www.westons-cider.co.uk Azerbaijani Association of Technical Divers Publicity Officer and Goat Wrangler Last edited by lizardland : 26th November 2007 at 09:32.*
(Offline)