Quote: (Originally Posted by Drmike)
...Its most likely the fact that the inner bore is smooth not ribbed like normal Rebreather hoses. Goop sits in these ribs and gurgles back and forth over each other on normal hoses...
I think you are right. Thanks for the info and summary.
A good friend of mine recently took a cave course from Kevin, and had a go on the Boris. He was very impressed with the low WOB (his exact words were "... like breathing without the unit!") so that sparked my interest, again.
But I still haven't able to convince myself about the size/weight of the unit yet. And as you have pointed out, it is an unit more suitable for expedition-type diving which I don't do at all.
However, there are still technologies from the unit that I wish would migrate eventually over to smaller-size units that I dive.