Transforming eCCR into hCCR

[kensuf]

Yes you could and it would be really simple to do so with a JJ. Technically you don't need to block the first stage, but the advantage of a blocked first stage is you wouldn't need to monkey with the needle for depth changes.

 

[Dsix36]

So from what I read here it sounds as though i could convert my JJ into an hCCR by replacing the O2 MAV with one with a needle valve. Is that right? Would I need to mess with the first stage?
Not planning to do this, just wondering...

That is correct. no messing with the first stage. not depth restricted like a fully manual unit either.

 

[vioch]

No messing with the first stage = messing with the needle valve during the dive with depth changes....

 

[jale]

"Messing" is a big word.
It is like everything, after a while you don't really think about it. Needle valve without blocking the first stage is the way to go otherwise, what is the point of a needle comparatively to a leaked valve?!

 

[vioch]

Look at "Охуgen addition" here

 

[Dsix36]

No messing with the first stage = messing with the needle valve during the dive with depth changes....

Until you have actually used one it is difficult to understand how little you have to actually "mess" with a needle valve. It does not keep you as busy as some might tend to believe. I very seldom found a need to touch it unless I really made a big change in depth or workload. the most noticeable was when using a scooter and needing to dial it down a bit.

 

[jale]

Until you have actually used one it is difficult to understand how little you have to actually "mess" with a needle valve. It does not keep you as busy as some might tend to believe. I very seldom found a need to touch it unless I really made a big change in depth or workload. the most noticeable was when using a scooter and needing to dial it down a bit.

exactly

 

[Cio]

Tecme has dry suit inflators modified with CMF orifices. I assume he can make you what you want.

 

[vioch]

exactly

Sure, I remember rjack321's "positive" feedbacks ... especially with drygloves =)))

 

[jale]

Sure, I remember rjack321's "positive" feedbacks ... especially with drygloves =)))

It is not because he has posted a problem that this problem is real.
It remind me people saying that you cannot manipulate clips with thick gloves.
Like everything, it is about practicing, being patient and getting use to it.
Really, this needle valve adjustment is not that a big deal