100 size tanks?

[broncobowsher]

AL goes positive at the end of a dive, known fact.

At the end of a dive, where do you want floaty stuff at? I like to stay a little more balanced. One of the multi-dimensional parts of trim. I don't like the way an aluminum is floaty and wants to be on top.

 

[pauldw]

This is something I’ve never been able to grasp.

It seems like if I breathe X amount of air, then that air weighs what it weighs, and buoyancy increases the same regardless of what tank it came from, because X amount of air weighs Y pounds regardless.

 

[tursiops]

AL goes positive at the end of a dive, known fact.

At the end of a dive, where do you want floaty stuff at? I like to stay a little more balanced. One of the multi-dimensional parts of trim. I don't like the way an aluminum is floaty and wants to be on top.

So you don't like the buoyancy above you? You'd rather have it beneath you?

 

[ggunn]

This is something I’ve never been able to grasp.

It seems like if I breathe X amount of air, then that air weighs what it weighs, and buoyancy increases the same regardless of what tank it came from, because X amount of air weighs Y pounds regardless.

Correct, but one thing, though; a factor in how much the buoyancy of a given tank changes is also dependent on how large the tank is, i.e., the volume of water it displaces. The larger the tank, the more it will change, but in reality it's a minor consideration.

 

[scubadada]

You make up for your final cylinder buoyancy with the weight you wear so that you will be neutrally buoyant on your safety stop and on your final ascent to the surface. Duh.

 

[Blackcrusader]

AL goes positive at the end of a dive, known fact.

At the end of a dive, where do you want floaty stuff at? I like to stay a little more balanced. One of the multi-dimensional parts of trim. I don't like the way an aluminum is floaty and wants to be on top.

Here I am at 5m depth with an AL80 with 50 bar around 725 PSI. Please let me know where my tank is floaty. As you can see signaled to others I have cleared safety stop was just doodling around while my go pro takes a video. If you are floaty at the end of a dive with a tank with low psi bar then you are not weighted or trimmed correctly.

 

[Celt]

I can’t understand why someone would want to use an aluminium 80 cuft. On land they weigh more than a 100 cuft steel. More dead weight and less air. The only reason I can think of is people who hire them don’t have to paint them.

 

[scubadada]

I can’t understand why someone would want to use an aluminium 80 cuft. On land they weigh more than a 100 cuft steel. More dead weight and less air. The only reason I can think of is people who hire them don’t have to paint them.

The AL80 weighs less than a HP steel 100 100 size tanks?

 

[scrane]

It is not surprising that a thread that started as a mild troll has drifted into absurdity.

 

[broncobowsher]

So you don't like the buoyancy above you? You'd rather have it beneath you?

No, I want it centered. Not above, not below, not next to me.
I prefer less lead tugging in one direction as buoyancy is going in the other.