Steel cylinder wheigt

[Scuba fryd]

Hey

So I have been looking deep into the steel bottle trim but I simply can't finde a answer.

I were wondering for a let's say a 12 liter cylinder what would be the optimal stamped wheigt. I would guess as close to 12 kg so it would be neutral or less or is it actually better to get a 13 kg so it would always be a bit negative.


(Drysuit Diving)

 

[Mike1967]

Check this out mate, some good info there...

Thread 'Updated SCUBA tank specifications list -- in PDF and spreadsheet'

Jan 5, 2019

Hello!

I have wasted my entire day re-working a SCUBA tank specifications list. I've been working with the Huron Scuba list for *years*, but I'm suspicious of the information: where did it come from? Also, it includes a lot of junk I've never seen in real life, as well as tanks that no one should *ever* dive. So, I completely reworked it.

My favorite part is that I've included links to where the data came from. In most cases, it's straight from the manufacturer, or at least a major US distributor. (So Blue Steel and XS Scuba for Faber, for example.) I've also added a few extra...

• tmassey
• Replies: 102
• Forum: Tanks, Valves & Bands

• 
• 

 

[Scuba fryd]

Check this out mate, some good info there...

Thread 'Updated SCUBA tank specifications list -- in PDF and spreadsheet'

Jan 5, 2019

Hello!

I have wasted my entire day re-working a SCUBA tank specifications list. I've been working with the Huron Scuba list for *years*, but I'm suspicious of the information: where did it come from? Also, it includes a lot of junk I've never seen in real life, as well as tanks that no one should *ever* dive. So, I completely reworked it.

My favorite part is that I've included links to where the data came from. In most cases, it's straight from the manufacturer, or at least a major US distributor. (So Blue Steel and XS Scuba for Faber, for example.) I've also added a few extra...

• tmassey
• Replies: 102
• Forum: Tanks, Valves & Bands

• 
• 

Super nice but I were looking more for what would be best in the water wheigt wise. Is it best to have a little negative og to have it positive as soon as possible

 

[gmerick]

Are you slinging the tank (or sidemount)? Or is it strapped to your Wing/BC?
If it's a fixed part of your gear, it matters much less. The combination of cylinder buoyancy (+/-) and correctly located ballast makes it easy to be properly weighted and in trim.
If it's hanging from snap hooks it's annoying if it gets positive during the dive. I dislike cylinders that bobble around above my hips. Here I like it to remain slightly negative, even when empty. -- Note -- slightly negative even at the base of the cylinder. If I unclip the cylinder when it's near empty, It's is better for me if would lay flat on the sand, not bobble around base high with the reg in the sand.

 

[Scuba fryd]

Are you slinging the tank (or sidemount)? Or is it strapped to your Wing/BC?
If it's a fixed part of your gear, it matters much less. The combination of cylinder buoyancy (+/-) and correctly located ballast makes it easy to be properly weighted and in trim.
If it's hanging from snap hooks it's annoying if it gets positive during the dive. I dislike cylinders that bobble around above my hips. Here I like it to remain slightly negative, even when empty. -- Note -- slightly negative even at the base of the cylinder. If I unclip the cylinder when it's near empty, It's is better for me if would lay flat on the sand, not bobble around base high with the reg in the sand.

I ma talking only sidemounte

 

[Mike1967]

Is it best to have a little negative

Yes that's my preference for sidemount, Faber 12.2L steels with the round bottoms.

 

[grantmac]

For sidemount I prefer a tank which is neutral or just slightly positive when completely empty.