Deco tables to download . .

[absolutediving]

Does anyone know where i can download tables for air with 50% and 75%. I need them for examples in a presentation not for actual planning. I use software for real dives! . . .Thanks . . .

[Garf]

you're not going to find a preprinted one for 50% and 75% as both of those gases would be considered a deco gas. Preprinted ones usually contain a backgas and a deco gas. Using that combination your max bottom depth would be 21m and you would have to be carrying quite large tanks to get into deco. something like twin 26's in fact. You'd hit CNS problems before deco problems.

On top of that problem, 75% is not really a standard gas in anyone's book so that would be a nonstarter anyway.

If you're talking about AIR, and 50% and 75% this doesn't make a lot of sense either. By the point in the ascent where you would be swapping onto ther 75% you're into the intermediate stops and might as well boogie on up to the shallow stops and push the gradient. You're not really getting that much benefit from the 75% overt he 50% (depending on the model you choose I guess). It knocks a few minutes off a 30 minute dive to 50 metres, but you have had to carry an extra stage for the hassle. You run into backgas limitation problems anyway, so there's no real benefit in carrying the second stage.

If you need this for some sort of bizarre " how to choose a wierd combination of gas mixes presentation" then just burn your own using the software you state you are using. Just about every soft app out there worth it's salt will allow you to do this.

[GLOC]

I am sure there are IANTD 50% and 75% pre-printed tables using Air as backgas but I would follow Garf's advce and use V-Planner, H-Planner or DecoPlanner to calculate some tables and screen grab them if they are for presentations.

[Ahmed Adly]

Originally Posted by absolutediving

Does anyone know where i can download tables for air with 50% and 75%. I need them for examples in a presentation not for actual planning. I use software for real dives! . . .Thanks . . .

What I would do is go to gue.com/ and buy a copy of deco planner. It has a very good function that creates tables for whichever bottom gas and deco gas you choose.
Also the ranges of depth and time and incriments give you the most targeted results you could ask for.

Actually, it seems that is about the only possible answer for this question.

[Ahmed Adly]

Here is a better link to the software page:GUE Software

[Steve Jones]

Originally Posted by absolutediving

Does anyone know where i can download tables for air with 50% and 75%. I need them for examples in a presentation not for actual planning. I use software for real dives! . . .Thanks . . .

I see you still haven't got a real job then Paul.

Steve

[Getafix]

Originally Posted by absolutediving

Does anyone know where i can download tables for air with 50% and 75%. I need them for examples in a presentation not for actual planning. I use software for real dives! . . .Thanks . . .

IANTD do indeed do 21% backgas and either 50% deco or 75% deco tables on a waterproof vinyl. I don't think they are downloadable but you can buy from their websites.
They are Buhlmann (ZHL-16B ?) based and have final stops at 4.5m and the deco gas is only used from 6m up.

They come from an age before internet chumps, but they do work

[Steve Jones]

Originally Posted by Garf

.

On top of that problem, 75% is not really a standard gas in anyone's book so that would be a nonstarter anyway.

It was when I did my TDI course. Not sure if they still advocate 75% or 80% for the final deco gas.

Steve

[PBrown]

Originally Posted by absolutediving

Does anyone know where i can download tables for air with 50% and 75%. I need them for examples in a presentation not for actual planning. I use software for real dives! . . .Thanks . . .

For the purposes you describe, the large images found on this page maybe adequate: IANTD Flexible Dive Tables

Originally Posted by Garf

you're not going to find a preprinted one for 50% and 75% as both of those gases would be considered a deco gas.

On top of that problem, 75% is not really a standard gas in anyone's book so that would be a nonstarter anyway.

You are making me feel very old now. Still its good to see how much things have moved on in a relatively short time.

cheers,
Paul

[Steve Jones]

Originally Posted by PBrown

You are making me feel very old now. Still its good to see how much things have moved on in a relatively short time.

cheers,
Paul

If I was still OC then I would be using 36% and 75% for the deeper trimix dives, and 75% as a deco gas if I was doing deco dives in the nitrox range.

Each to their own really, with enough experience you get to know what gasses suit your type of diving, and your body.

One friend of mine dives a twinset with air in the one cylinder, trimix in the other (not a huge amount of helium as he is a tight b@stard), then one cylinder of 60% for deco. He uses this configuration for dives up to 80 metres that we have done.

Steve