rantFUJAK

sowhat do you guys think....?

yes for an OC trimix computer only.....the deep stops seem to be the issue?/

Bottom timer or Tec2G in gauge mode. All you need. $600 max.

VR3, Liquivision, NeHeo, Nitek He... Bah, you guys will buy anything. Same reason that telemarketing shows on TV work, all swept up in the hype and marketing. I wonder where JDs and Craigs fan-dangled computers are at the moment....

 The best dive computer is the one in your brain, not on your wrist. LEARN your deco.

When you can tell me what the stops are for a 60m dive for 20 mins, using 10/50 and switching to air diluent at 40m on CCR, I will give up the computer. Until then, keep your Gooey ratio deco to yourself.
When my RB was not operational, all I had was a 2G in gauge mode, and I got out, so I do have some idea of what I am doing. I will still use something which is a shitload smarter than me though.

JD

Would these guys know ?

www.dirrebreather.com

 ;)

Cedric Verdier! Please, dont make me laugh...!
He is the guy who lied about a depth record in a cave, said he went, and it was later proven by Mike Gadd that he didn't even get close. Sort of destroyed his reputation. Up until then he seemed to be quite respected. I didn't really like the way Dr Mike went about it though.

JD

just answer the bloody question will you, without the obvious fucken gooey response

The initial question was to the suitability of the device as an OC computer.

IT responded that all that was required was a bottom timer and tables. (fair comment.)

JD then introduced an RB deco example, somehow expecting ratio deco to provide an answer ?

The usual anti DIR shitfight then begins  :D :D :D :D

There have been numerous posts on this and many other forums explaining the rationale and logic behind ratio deco. None of it suggests that ratio deco is a suitable tool for using in complex RB deco calculations.

In fact the parameters in which ratio deco is used in an OC environment, well documented and taught in GUE T1, T2 training classes,
is available to anyone able to google. Try, RATIO DECO EXPLAINED.

If you obviously intelligent people, ( some exceptions), stopped pulling your dicks over FUJAK beanies on door handles and took five minutes to try and comprehend ratio deco (with its obvious limitations when used outside its intended parameters) you might be surprised at to its efficiency and suitability for technical diving.
Regards RWN 111

You could always ask your buddy ROFL

I am interested in exploring whether for a CCR there is something akin to Ratio Deco. As JD says, he uses 10/50 dil for deeper than 40m, and for shallower, Air Dil.

Given RD is just an approximation to a numerical deco algorithm, surely something similar can be calculated. The benefit here is JD having determined the gas that he uses for his dives ( 10/50, Air and O2). Given these are constant, set point is constant, only depth and time of dive varies.

I'd be interested in seeing for a 60m dive, BT of 10,15,20,25,30 mins up to 60 mins, and then seeing if there is some approximation numerically that could be made. Interesting (to me anyway).

Run it through deco planner, look for consistent ratios?

I would have already if I had decoplanner.

Well, why didn't you ask...?

So, out of idle curiosity, could the RD aficionado's advise what the deco/runtime would be for:
Travel gas 27/34 swapping to bottom mix 12/60 at 40m
100m for 10min on 12/60
75m for 5 min
60m for 5 min
50m for 5 min
40m for 10 min swapping to 27/34
35m for 15 min
21m swap to 50%
9m swap to 80%

Runtime?

C

Craig,

Ratio Deco is an approximation to a deco schedule that uses specific breathing gases (Standard gases, Such as 21/35, 18/45, 15/55, 12/65, 10/70).

Hence you cant use Ratio Deco for the dive plan you have proposed below.

Anyone else find it disturbing that RN is talking about 'pulling your dicks' and FUJAK beanies, with his corresponding avatar...

nevermind then......

Go the Liquivision Harv's, then it'll be all set for when you venture into the world of rebreathers.

C

OK, so using standard gases then.

For example:
Travel gas 21/35 swapping to bottom mix 10/70 at 45m
100m for 10min on 10/70
75m for 5 min
60m for 5 min
50m for 5 min
45m swap to 21/35
40m for 10 min
35m for 15 min
21m swap to 50%
6m swap to 100%

Deco schedule & runtime?

Ratio
Deco: 1:3 @ 240'/72m - 300'/90m for 15/55 or 10/70
with TriOx 35/25, Nitrox 50 and O2 for deco
Set Point
270'/81m 1 : 3
BT DT Adjustments on the fly
10 30
15 45 + 10'/3m + 5 min
20 60 - 10'/3m - 5 min
25 75
30 90 Lost Deco Gas Double Deco time
35 105
40 120
Do 0.4 (40%) Deco time on O2 @ 20'/6m 20% of the time ascent to the surface
Do 0.4 (40%) Deco time @ 70'/21 - 30'/9m = 5 stops Do a S curve for Nitrox 50%
Do 0.2 (20%) Deco time @ 120'/36m - 80'/24m = 5 stops Do a S curve for TriOx 35/25
Notes:
O2 is always 12 min on O2 and 6 min off or Up
Always Backgas Break before gas switch (included in time) 80'/24m and 30'/9m
Do half of 120’/36m bottle time in 190’/57m-130’/39m range.
If you add 190'/57m bottle do not adjust times, this will only increase the effectiveness of
deep stops

Easy as.

fuck that...Ive ordered a Shearwater (no CC)

great value @ $1200Aus

Why Harvs, are you hoping to offer a package deal with the scooter?

JD

Ian, why are you quoting in feet? Don't tell me you have been forced to give up the well proven metric system? Do you ask the girl at the cafeteria how much in US$, or do you convert it yourself and pay in greenbacks?

JD

lol lol well sometimes in life you have to spend money to make money......?????


no no no im easing my way back to the water...in fact Alysha and Brody blitzed  their first weekend of OW and should finish well this weekend with the OW dives

anyone had a look at the suunto he

well my predator has arrived in aus should get it next week from Baz.....when I pay him

turns out he posted it to me before i had paid him great service....got it today...got my new regs yesterday.......gee im getting close to needing a good dive