> On Oct 27, 2014, at 10:42 AM, Rodrigo Severo <rodr...@fabricadeideias.com> > wrote: > > On Mon, Oct 27, 2014 at 12:37 PM, William Perry <wmpe...@kadath.us> wrote: >> >> I just finished by CCR training down in Bonaire last week so I don’t have a >> lot of experience, but I did find that minor depth changes did not impact >> the loop volume enough for me to feel the need to add diluent. My inhale >> was cut very slightly short (I was diving with the auto-diluent-valve off >> after the initial big descent). This would be equivalent to the occasional >> mask clear at depth. If you are doing a ton of 10 meter ascents/descents in >> a cave system as it winds around then those will add up quickly, but 1-2 >> footers is noise. > > Bill, > > > I agree: 1/2 foot is noise, 10 m is significant. > > What value do you think we should use as limit? I just proposed 1 m on > my previous email to Robert but I'm not sure if this value is big > enough. > > What do you think?
Maybe start tracking it if they stay at the new depth for more than a certain # of samples? If I just drop down quickly to look at something I’m not going to mind a short breath or two but if I am following the contour of the reef and stay at that depth for 5-10 minutes I will probably squirt in some diluent. I’m generally not a fan of heuristics like that though. >> Would tracking only the size of the counter lungs be sufficient? > > I don't think any of this is necessary, neither counter lungs volume > nor loop volume as I mentioned on my previous email. Yes, if we are just worrying about determining a SAC rate after the fact. Would some indication of loop volume help for planning these dives though? -bill _______________________________________________ subsurface mailing list subsurface@subsurface-divelog.org http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
