Quote: (Originally Posted by
decoweenie)

This was just a
blue-sky idea I was dreaming when I was converting the EDO-04 (SCR) to XCR (mCCR) a few years back...
I wanted to be able to switch between the SCR and CCR modes easily and almost instantaneously at will. And as you said, the only thing needed to be changed was the mushroom valve for the small bellows. And I started dreaming about a mechanical lever like the red-filter inside video housing that could slide the mushroom into and out of position...
you all could start laughing now...

Amusing: I know that Arno thought about that but it was too difficult.
I thought about a middle way witch is to be able to simply eject the inside valve.
So for exemple you can do the deepest part or your dive without any control ( thats a "real" dream ) then on the deco way you eject the inside valve because you have time enough to play with O2 and sensors to have the best deco ( or as an emergency solution in case of deco gas lost ) but ... thats just a dream.
On an other hand a active SCR ( I mean like a dolphin ) is an easiest way to be turned into CCR mode.
Do you know that?
http://home.worldcom.ch/intruder/
Its the SMG ( self mixed gas ) system witch is supposed to be abble to be changed underwater between SCR, CCR and SMG mode
Not my actual way but could be interesting
Cheers
Marc T