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deepstop and GF

Posted: 24 Aug 2009, 14:36
by Marco
Hello,

Could someone advice me about the settings regarding The GF?

Thanks

Re: deepstop and GF

Posted: 24 Aug 2009, 16:12
by Hiasl
I think, that there could be no "general" advice for setting the GFs ;-)

The lower you set GF-low (e.g. 20 or less), the deeper the stops will start (e.g. 21 or 24m for a 50m dive with 20min bottom-time). The higher you set GF-high (e.g. 80 or higher), the shorter the shallow stops will be.

I use GF hi/lo = 90/15 and the whole decotime is approximately the same as calculated with "ratio deco", but the perticular stops are a little different.

The Bühlmann-model with Baker's gradient factors will never produce "deepstops" as introduced by Richard Pyle or teached by GUE or ISE (80% of pressure or 75% of max-depth) or something else.

I hope that helps...

Re: deepstop and GF

Posted: 25 Aug 2009, 11:38
by wrobell
Below link to very nice GF values explanation (I believe it was posted before on this forum by some one else)

http://www.rebreatherworld.com/general- ... mmies.html

In article linked below, Baker writes why GF are better than deep stops

http://www.ddplan.com/reference/deepstop.pdf

Re: deepstop and GF

Posted: 26 Aug 2009, 10:01
by Marco
Hi all,

I want to thank you for the help,now it is pretty clear!

Thanks again