Pursuit gradient factors

Tyler S. · 28th March 2008, 17:41

Hi friends!

What are your gradient factoos of choice? Mine is 10/90

Mark Chase · 28th March 2008, 17:44

10/90 + padding if i feel like it.

ATB

Mark

Janos · 28th March 2008, 17:46

30/85, but I always add conservatism by stopping deeper, and sometime by hanging around a bit longer.

Janos

**Dsix36** · 28th March 2008, 19:24

I generally use 25/85 on my primary handset and keep the secondary handset with 10/100

I know that I get a little niggle in my knee after a dive with 10/100. I just have it set that way for if the brown stuff hits the oscillating blades and I really want to get out of the water as soon as possible.

sailor · 28th March 2008, 21:56

10/80 for a deep first stop and extra safety margin

Rob Dobson · 28th March 2008, 22:12

15/85 - works fine for me.

OceanOpportunity · 28th March 2008, 22:34

are there any white papers out there talking through gradient factors in plain english?

regards
Mike

diverrob · 28th March 2008, 22:42

I am currently using 10/75 and find it to be just fine but I like to be Conservative

Rob

sailor · 28th March 2008, 22:56

Quote: (Originally Posted by OceanOpportunity)

are there any white papers out there talking through gradient factors in plain english?

regards
Mike

There´s some information here but not very easy to read:

Shearwater Research Inc. - Computers for Diving

Nailer99 · 28th March 2008, 23:23

Here's the part I'm still confused about- I understand that GF= percent of M value, and that the first number equals the deeper portion, and the second number equals the surfacing value......but where is the "/" part? I mean, at what depth do we transition from the "10" to the "90" with a GF of "10/90" ?

(mine is set for 15/85, only because my instructor reccomended it, not because I fully understood the damn thing.....)

28th March 2008, 17:41	#1 (permalink)
Tyler S. rEject Current Rebreather/s: rEvo Other Rebreather/s: rEvo Join Date: Nov 2005 Location: San Diego Posts: 232	Pursuit gradient factors Hi friends! What are your gradient factoos of choice? Mine is 10/90
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28th March 2008, 17:44	#2 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,694	Re: Pursuit gradient factors 10/90 + padding if i feel like it. ATB Mark __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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28th March 2008, 17:46	#3 (permalink)
Janos "Two Sheds" Current Rebreather/s: Classic Kiss Other Rebreather/s: Classic Kiss Join Date: Feb 2005 Location: East Surrey Posts: 600	Re: Pursuit gradient factors 30/85, but I always add conservatism by stopping deeper, and sometime by hanging around a bit longer. Janos __________________ You can lead a horse to water but you can't climb a ladder with a large bell in both hands - Vic Reeves www.hellfins.com/shed
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28th March 2008, 19:24	#4 (permalink)
Dsix36 Going Down? Current Rebreather/s: Optima Other Rebreather/s: Join Date: Aug 2007 Location: Deerfield Beach, Florida Posts: 1,053	Re: Pursuit gradient factors I generally use 25/85 on my primary handset and keep the secondary handset with 10/100 I know that I get a little niggle in my knee after a dive with 10/100. I just have it set that way for if the brown stuff hits the oscillating blades and I really want to get out of the water as soon as possible. __________________ THE MORE THAT I LEARN, THE MORE THAT I STILL NEED TO LEARN!!!!!!
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28th March 2008, 21:56	#5 (permalink)
sailor New Member Current Rebreather/s: Inspiration Vision Other CCR Dolphin Other Rebreather/s: Other CCR Dolphin Join Date: Jul 2006 Location: UAE Posts: 64	Re: Pursuit gradient factors 10/80 for a deep first stop and extra safety margin
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28th March 2008, 22:12	#6 (permalink)
Rob Dobson New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2007 Location: Oxford Posts: 87	Re: Pursuit gradient factors 15/85 - works fine for me.
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28th March 2008, 22:34	#7 (permalink)
OceanOpportunity for a world of water Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Other CCR Dolphin Home Build Join Date: Nov 2006 Location: Providence, RI USA Posts: 543	Re: Pursuit gradient factors are there any white papers out there talking through gradient factors in plain english? regards Mike __________________ Michael Lombardi Oceans of Opportunity www.oceanopportunity.com Elected Director, Society for Human Performance in Extreme Environments MN'07, The Explorers Club Project Manager, Diving a Dream
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28th March 2008, 22:42	#8 (permalink)
diverrob The Evolution of Diving Current Rebreather/s: Evolution Other SCR Other Rebreather/s: Not Bought Yet Other SCR Join Date: May 2005 Location: Victoria BC Canada Posts: 336	Re: Pursuit gradient factors I am currently using 10/75 and find it to be just fine but I like to be Conservative Rob
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28th March 2008, 22:56	#9 (permalink)
sailor New Member Current Rebreather/s: Inspiration Vision Other CCR Dolphin Other Rebreather/s: Other CCR Dolphin Join Date: Jul 2006 Location: UAE Posts: 64	Re: Pursuit gradient factors Quote: (Originally Posted by OceanOpportunity) are there any white papers out there talking through gradient factors in plain english? regards Mike There´s some information here but not very easy to read: Shearwater Research Inc. - Computers for Diving
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28th March 2008, 23:23	#10 (permalink)
Nailer99 Joshua Smith Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jan 2007 Location: Seattle, WA, USA Posts: 222	Re: Pursuit gradient factors Here's the part I'm still confused about- I understand that GF= percent of M value, and that the first number equals the deeper portion, and the second number equals the surfacing value......but where is the "/" part? I mean, at what depth do we transition from the "10" to the "90" with a GF of "10/90" ? (mine is set for 15/85, only because my instructor reccomended it, not because I fully understood the damn thing.....)
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