Bottoms up!

[mnjhuz76]

I just started diving with stages and bought a brandnew al40 manufactured by Polaris.

The other day I practiced depositing it on a platform (fresh water) and noticed it was standing upright (bottom up). Is this the expected behaviour at 2,600 psi/180 bar (EAN40)? I always thought it would do this when it's near empty or am i mistaken there?

Cheers,
Peter

 

[HantsDiver]

Your first stage and reg have some weight to them.

I don't mean this in a nasty way - but does it really matter? If your setup behaves like that then just dive with it. Overall when full I find an ali40 about 1kg negative and when nearly empty about bang on neutral. (those are without regs). So with a reg I'd expect it to be a bit arseup when empty or full as your regs will swing the moment of inertia around.

 

[Doby45]

My Luxfer AL40 does the same thing when I deposit it in a cave.

 

[tbone1004]

al40's hang vertically bottoms up very quickly. it's part of their appeal

 

[blac86]

This sounds about right unless you get one of those 40s with a fat butt

 

[mnjhuz76]

Thanks everybody, so nothing to worry about
Just wanted to make sure, there's not some kind of manufacturing defect

Cheers,
Peter