'Non' DIR or DIR diver?

[Tomeck]

Or you prefer Doing It Wrong?

 

[texdiveguy]

Just got in from diving, so just checked back on the 30/30 mix at 80-100/120ft. question. The only positive I really have read, is if you think that a bit of He will make in your breathing easier as Jason B pointed out... as a rule He does breath easier....he indicated he finds this of benefit in a high flow cave system---that I can buy and may have some small merits in that situation...I think the key though in any high flow condition be it cave//wreck flow through or ripping river/ocean current is to be sure you physical stamina level is up for the dive and good quality and preforming gear at those depths will do wonders....the He IMO would offer only minor assist. Now someone pointed out that after doing a dive with mix such as a 21/35...to top up with nitrox if possible--always nice if you plan on doing such from an economical point....nothing wrong with stretching the leftovers for another dive. In terms of a 'team gas choice'...gee if I 'have to' blend up some 30/30 or 25/25 to dive a 80-100ft dive profile with a 'team', I am def. going to miss that team dip.....always solo diving as a great option.

Recap:
'Non' DIR diver 69 51.88%
DIR diver 38 28.57%
other 26 19.55%

 

[boomx5]

Just got in from diving, so just checked back on the 30/30 mix at 80-100/120ft. question. The only positive I really have read, is if you think that a bit of He will make in your breathing easier as Jason B pointed out... as a rule He does breath easier....he indicated he finds this of benefit in a high flow cave system---that I can buy and may have some small merits in that situation...I think the key though in any high flow condition be it cave//wreck flow through or ripping river/ocean current is to be sure you physical stamina level is up for the dive and good quality and preforming gear at those depths will do wonders....the He IMO would offer only minor assist. Now someone pointed out that after doing a dive with mix such as a 21/35...to top up with nitrox if possible--always nice if you plan on doing such from an economical point....nothing wrong with stretching the leftovers for another dive. In terms of a 'team gas choice'...gee if I 'have to' blend up some 30/30 or 25/25 to dive a 80-100ft dive profile with a 'team', I am def. going to miss that team dip.....always solo diving as a great as an option.

Recap:
'Non' DIR diver 69 51.88%
DIR diver 38 28.57%
other 26 19.55%

I normally only use 32% in those ranges. However, if I'm going to be spending at least an hour at those depths I'll use 30/30 since it makes the job much more enjoyable.

 

[RiverRat]

On a side note can anyone point me to info on Ratio Deco? Any links?
I'm curious as to what the specifics are and how it works on a recreational dive.

 

[Kim]

On a side note can anyone point me to info on Ratio Deco? Any links?
I'm curious as to what the specifics are and how it works on a recreational dive.

I'm not sure if you can actually find it spelled out on the net - it's part of a training process. However, there was a fairly solid discussion about it on TDM. I'm not sure if it's OK to actually post the link here so you'll just have to look for it!

 

[Kevrumbo]

On a side note can anyone point me to info on Ratio Deco? Any links?
I'm curious as to what the specifics are and how it works on a recreational dive.

Here it is; be aware of the caveats on the opening page, and recommend taking a Class before actually using it (the next Class is on 15 Dec '07 in Denver CO; email contact info@5thd-x.com).

 

[dsteding]

I'm not sure if you can actually find it spelled out on the net - it's part of a training process. However, there was a fairly solid discussion about it on TDM. I'm not sure if it's OK to actually post the link here so you'll just have to look for it!

One thing to note:

As far as I know, RD is not being taught by GUE anymore. Maybe some recent Tech 1 grads can clarify.

 

[Scubadude773]

Hogarthian Diver
I have a very high respect for the DIR trained divers, but I know it isn't toally for me personally.
Safe Diving,
Robb

 

[lamont]

One thing to note:

As far as I know, RD is not being taught by GUE anymore. Maybe some recent Tech 1 grads can clarify.

It is currently being taught. I haven't read AG's paper recently so I don't know if there's any divergence, but GUE is teaching ratio deco. Its also supplimented with discussions of gradient factors, decoplanner, other software, deep(er) stops, etc. And it covers both S-curve and linear/pragmatic shapes, along with some discussion of the limitations of ratio deco and the range over which it applies.

 

[dsteding]

It is currently being taught. I haven't read AG's paper recently so I don't know if there's any divergence, but GUE is teaching ratio deco. Its also supplimented with discussions of gradient factors, decoplanner, other software, deep(er) stops, etc. And it covers both S-curve and linear/pragmatic shapes, along with some discussion of the limitations of ratio deco and the range over which it applies.

Good to hear. I'd heard some people comment to the contrary.

Looked like you guys were deep into it when I stopped by the shop on Saturday . . .