Vision GF Settings

colinicky · 23rd February 2006, 19:27

I have a Vision with trimix software .I am not using trimix but I don't understand GF settings at all !

can somebody please explain ? do I need to worry about these if I'm only diving air dil ? or does it affect deco etc even on that ?
Sorry total numpty question

colinicky · 23rd February 2006, 20:01

Sorry probably didn't make myself very clear I'm that confused .I dont know let alone understand what GF is/are ! Is this something that should have been taught to me on a course ? (which one )

Silent · 23rd February 2006, 20:01

Hi Colin,

Check out this thread which gives several explanantions to explain them http://www.rebreatherworld.com/new-r...adient+factors

Hope that helps.

Neil

colinicky · 23rd February 2006, 20:17

Quote: (Originally Posted by Silent)

Hi Colin,

Check out this thread which gives several explanantions to explain them http://www.rebreatherworld.com/new-r...adient+factors

Hope that helps.

Neil

Yes thanks that helps a lot !

now that I know it is a measure of conservatism it's a little easier .I sat reading the vision manual going cross eyed at it .

Nick uk. · 23rd February 2006, 21:39

Quote: (Originally Posted by jptaylor9)

Have you checked out the Vision manual, it suggests some values for air & trimix... for air dil it sugggests 90/95.

?????

Hi or Low?

Either way it doesn't matter if it's air dil or T/Mix, the gradient factor is basicly the size of the Inert gas bubble you will have, that will need compreeming/Curing. The percentage is how much you are willing to take on board, and will determine your deep stops, as in when you start to treat the bubble.

Perhaps someone else can put it more elequently..

**nigelh** · 24th February 2006, 10:38

Quote: (Originally Posted by colinicky)

Sorry probably didn't make myself very clear I'm that confused .I dont know let alone understand what GF is/are ! Is this something that should have been taught to me on a course ? (which one )

Can I offer my words on the subject.

***Beanie*** · 24th February 2006, 10:44

Quote: (Originally Posted by jptaylor9)

Have you checked out the Vision manual, it suggests some values for air & trimix... for air dil it sugggests 90/95.

really

I use 20/80
In short the two numbers change the depth and times of deco stop
the first controls the depth of the first stop and the second the length of the last stop

100/100 is straight bulman
the lower the first number the deeper the first stop, the lower the second number the longer the last stop.

I think nigel's link probably explains it a lot better than me

your best option is to download a GF based deco program and play with the numbers and observe what happens to the stops www.ddplan.net for example (free)

23rd February 2006, 19:27	#1 (permalink)
colinicky RBW Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 678	Vision GF Settings I have a Vision with trimix software .I am not using trimix but I don't understand GF settings at all ! can somebody please explain ? do I need to worry about these if I'm only diving air dil ? or does it affect deco etc even on that ? Sorry total numpty question __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
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23rd February 2006, 20:01	#2 (permalink)
colinicky RBW Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 678	Re: Vision GF Settings Sorry probably didn't make myself very clear I'm that confused .I dont know let alone understand what GF is/are ! Is this something that should have been taught to me on a course ? (which one ) __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
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23rd February 2006, 20:01	#3 (permalink)
Silent Staying Silent! Mostly... Current Rebreather/s: Other CCR Other Rebreather/s: Megalodon Ouroboros Other CCR Join Date: Jun 2005 Location: Northants, UK Posts: 383	Re: Vision GF Settings Hi Colin, Check out this thread which gives several explanantions to explain them http://www.rebreatherworld.com/new-r...adient+factors Hope that helps. Neil __________________ On the dark side everyone can hear you scream......
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23rd February 2006, 20:17	#4 (permalink)
colinicky RBW Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 678	Re: Vision GF Settings Quote: (Originally Posted by Silent) Hi Colin, Check out this thread which gives several explanantions to explain them http://www.rebreatherworld.com/new-r...adient+factors Hope that helps. Neil Yes thanks that helps a lot ! now that I know it is a measure of conservatism it's a little easier .I sat reading the vision manual going cross eyed at it . __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
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23rd February 2006, 21:39	#5 (permalink)
Nick uk. Made in England. Current Rebreather/s: Inspiration Classic Azimuth Other Rebreather/s: Azimuth Join Date: Nov 2005 Location: Viale C.Colombo 75 Marina di Carrara. MS 54036 Italy Posts: 575	Re: Vision GF Settings Quote: (Originally Posted by jptaylor9) Have you checked out the Vision manual, it suggests some values for air & trimix... for air dil it sugggests 90/95. ????? Hi or Low? Either way it doesn't matter if it's air dil or T/Mix, the gradient factor is basicly the size of the Inert gas bubble you will have, that will need compreeming/Curing. The percentage is how much you are willing to take on board, and will determine your deep stops, as in when you start to treat the bubble. Perhaps someone else can put it more elequently.. __________________ If it aint broke....don't fix it, and if it is.............well......get another one! divechief2000@hotmail.com
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24th February 2006, 10:38	#6 (permalink)
nigelh New member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 883	Re: Vision GF Settings Quote: (Originally Posted by colinicky) Sorry probably didn't make myself very clear I'm that confused .I dont know let alone understand what GF is/are ! Is this something that should have been taught to me on a course ? (which one ) Can I offer my words on the subject. __________________ nigelh
(Online)

24th February 2006, 10:44	#7 (permalink)
*Beanie* Gallery Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,311	Re: Vision GF Settings Quote: (Originally Posted by jptaylor9) Have you checked out the Vision manual, it suggests some values for air & trimix... for air dil it sugggests 90/95. really I use 20/80 In short the two numbers change the depth and times of deco stop the first controls the depth of the first stop and the second the length of the last stop 100/100 is straight bulman the lower the first number the deeper the first stop, the lower the second number the longer the last stop. I think nigel's link probably explains it a lot better than me your best option is to download a GF based deco program and play with the numbers and observe what happens to the stops www.ddplan.net for example (free) __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
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