Is it worth to do OC trimix before CCR Helitrox?

[rddvet]

I’ll leave this as you don’t know what you don’t know. There is massive value in say a Hypoxic CCR course due to stuff that is not covered in an OC Hypoxic course.

This is based on long conversations with very well respected instructors who I'm sure you've heard of and likely respect. Most of the conversations were in regards to Tech1/normoxic because I had a pfo repaired last year and not sure if I will or won't go hypoxic trimix. So I understand your point and don't disagree that I may change my mind over time. But at this point based on a ridiculous amount of discussion on it with much smarter divers than me, I have zero likelihood of redoing all of the trimix courses on ccr. I might add that the instructors I'm referencing would be comfortable doing a trimix ccr dive with me without specific ccr trimix training, my tech 1 instructor knows me well enough to add tidbits that differ in ccr vs oc to the class, and said instructors would likely do some "mentorship dives" with me on ccr post oc trimix class as a way to cover some of the things that differ between OC and CCR as opposed to doing a specific ccr trimix class, if they or I felt it necessary. IMO sometimes a formal class isn't necessary when a friendly training/mentorship dive or two can do the same thing. But I'm not the norm as most people don't have very easy access/friendships with their instructors to allow for the scenario I explained above.

 

[sea_ledford]

21/35 has an END of 86ft at 150...and significantly lower gas density than air or nitrox (really the biggest benefit for dives in that range)

You are right, I had max of 20% He stuck in my head for some reason...

 

[DiveTucson]

This is based on long conversations with very well respected instructors who I'm sure you've heard of and likely respect. Most of the conversations were in regards to Tech1/normoxic because I had a pfo repaired last year and not sure if I will or won't go hypoxic trimix. So I understand your point and don't disagree that I may change my mind over time. But at this point based on a ridiculous amount of discussion on it with much smarter divers than me, I have zero likelihood of redoing all of the trimix courses on ccr. I might add that the instructors I'm referencing would be comfortable doing a trimix ccr dive with me without specific ccr trimix training, my tech 1 instructor knows me well enough to add tidbits that differ in ccr vs oc to the class, and said instructors would likely do some "mentorship dives" with me on ccr post oc trimix class as a way to cover some of the things that differ between OC and CCR as opposed to doing a specific ccr trimix class, if they or I felt it necessary. IMO sometimes a formal class isn't necessary when a friendly training/mentorship dive or two can do the same thing. But I'm not the norm as most people don't have very easy access/friendships with their instructors to allow for the scenario I explained above.

Agree with this reasoning however it would not apply to most folks.

 

[Marie13]

You are right, I had max of 20% He stuck in my head for some reason...

That’s what TDI’s previous max helium percentage was for Helitrox. It was changed to 35% a couple of years ago.

 

[kensuf]

And I think NAUI is still 20%.

 

[Alaskan Scuba Dude]

RAID Tec 40 course. Single or doubles.

 

[broncobowsher]

RAID Tec 40 course. Single or doubles.

And ASD once again strikes from left field with a non-sequitur post just to run his post count up.

 

[FF / EMT]

RAID Tec 40 course. Single or doubles.

Isn’t RAID’s course called Deco 40? Or RB Deco 40
Padi uses Tec 40.

 

[BoltSnap]

RAID Tec 40 course. Single or doubles.

Can you elaborate please and tell us what this course is all about, what the standards are and prerequisites? Single or doubles what?

 

[boriss]

I am thinking of getting CCR trained while having only TDI ANDP.

I hear all the time that it is worth getting OC Trimix trained before CCR in case you bail out.

What are your opinions on this?

If you already know you're going CCR Trimix, don't even waste your time/money on OC Trimix at this stage.

Since you have AN/DP and as long as you have the relevant experience, you can go direct to Mod 1 w/Helitrox (150ft). Then you have to have many dives/hours before you can go CCR Trimix. In my case at least 50-dives and 50-hours.

That's the path I'm going at least. And to put it in perspective: I'm in Florida, meaning, I have no problem getting helium. Just don't see a point in investing into something that's going to go the way of the dodo.