DPV, rebreather and stages drag

[Snusmumrik]

I'm not sure what you mean by "neutral steel".

7l 200 bar steel tank that is positively buoyant when empty, and neutral with 50 bar.

 

[grantmac]

That's virtually the same as an LP50, when you add a regulator it's rather negative through most of the dive and will tend to hang.
You can try a bungee loop to tuck it up behind your armpit like sidemount.

 

[crofrog]

Fair enough, I haven't conducted a quantitative speed test. But if you pay attention while riding a scooter you can feel points of drag and subjectively the more buoyant stages seem to exert less backwards force. With standard stage rigging kits they have some freedom to move around and will naturally swing into the lowest drag position once you get moving.

Agreed. I think the stages when near empty just sorta find the turbulent space behind you and effectively streamline themselves by finding the point of least resistance.