Thinking about going tec

[formernuke]

Yes it will be a slow transition like when I started diving. When I first got my OW I self limited to 30 feet and started going deeper as I got more experienced and more training. This will be the same start small and work up.

 

[rjack321]

From the people I’ve talked to, 50% is a common deco gas here. Either that or 100%.

For short dives sure 1 deco gas is fine.
When you have 40+mins of deco having only 1 deco gas is starting to get iffy.

So it is worthwhile to pursue, I have doubled my bottom time and almost 4 times total in water.

For 90ft dives EAN32 gets you a 35min dive I don't see any reason to take a deco class to expand on that.

For 120ft dives [square profile] you don't get much NDL time on the bottom, but you're probably doubling your DCS and other risks by getting a virtual ceiling overhead. Especially on weak nitrox or worse air.

 

[KentB]

Bottom time really hinges on how much deco you are willing to do. Off to run a dive on MultiDeco. Be back shortly.

OK, I ran 130ft dive for 60 min with 28% back gas. I did it 3 times, with 50%, 100%, and with both 50 and 100 as deco for the same dive. Should be eye opening for you. O2 exposure is a real issue.

View attachment 557311 View attachment 557312 View attachment 557313

what’s your settings at??
I have last stop as 15’ and run 50/85 and my RT is 103 min with CNS at 68%
For 130’ 60 min with 28/50/02
Apparently my old eyeballs have a hard time seeing on this little phone. I thought your 28/50/100 plan was the 139 RT

 

[rjack321]

This is that same 130ft dive on AIR with 50 and 100 for deco gas and just 50%. You get a CNS warning for just 100 for deco on this dive.

View attachment 557315

No no no
This 50% plan is a perfect example of using software instead of knowledge. This plan is TERRIBLE!

 

[Marie13]

This is what 30 min at 130ft on 28% back gas and 50% deco gas gets you.

 

[Marie13]

what’s your settings at??
I have last stop as 15’ and run 50/85 and my RT is 103 min with CNS at 68%
For 130’ 60 min with 28/50/02

30/70.

 

[Marie13]

No no no
This 50% plan is a perfect example of using software instead of knowledge. This plan is TERRIBLE!

Just an example. Untwist your knickers.

 

[formernuke]

Wow, I'm both learning a s*^$ ton and getting confused at the same time. I love this site.

 

[Marie13]

Wow, I'm both learning a s*^$ ton and getting confused at the same time. I love this site.

Running actual dives and playing around with the different parameters can be quite an interesting exercise. Someone here called MultiDeco a video game for divers and it sure is fun.

 

[formernuke]

@Marie13

Thanks for running those. VERY INFORMATION.