15l tanks

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

flyboy08

ScubaBoard Supporter
ScubaBoard Supporter
Messages
4,187
Reaction score
3,016
Location
NYC
# of dives
500 - 999
For the first time, I opted for 15l tanks for my December COZ visit. In the past, I’ve used 80cf...with 12 pounds of weight. What should I expect differently besides a bit longer bottom time with this Aluminum 15l over the 80cf?
 
For the first time, I opted for 15l tanks for my December COZ visit. In the past, I’ve used 80cf...with 12 pounds of weight. What should I expect differently besides a bit longer bottom time with this Aluminum 15l over the 80cf?
You might need to carry a little more weight to be neutral at the safety stop.
 
Couple pounds but I’m curious as to what they’ll be filled to - an 80 is rated at 77.x at 3000psi, the 100 is rated at 100 at 3300. If they are filled to 3000, you are only gaining about 15cuft if my math is right, it is more though.

Maybe I should rent out al40’s???
 
If they are filled to 3000, you are only gaining about 15cuft if my math is right, it is more though.
20% more sounds great.
 
20% more sounds great.

I don’t personally think it’s worth the hassle but I understand why one would do it.

Tanks are bigger diameter and they don’t fit in the tank holder on the boat lol.

He’s got a lot of dives, more than likely just big lungs - I really hope they give him full tanks and he has a great time, I’d try anything to stay down longer.
 
I don’t personally think it’s worth the hassle but I understand why one would do it.

Tanks are bigger diameter and they don’t fit in the tank holder on the boat lol.

He’s got a lot of dives, more than likely just big lungs - I really hope they give him full tanks and he has a great time, I’d try anything to stay down longer.
I always dive the 100 cf Al tanks, every dive for the last several trips. I've always been an air hog, worse nowadays. I know that they don't fit the 80 cf holders, not as convenient, but I pay $5/tank more. They're not for everyone, but they are great for some.
 
As a pilot, there’s nothing worse than the altitude above you, the runway behind you and the gas you left on the ground.

As a diver, nothing worse than the air you left on the surface. I’m not an air hog, but not as good as my buddy (wife), so I’m looking for about 15-20 minutes more air time.

I’m healthy, in great shape, ride and lift daily, but I have large lungs and a 50” chest....lots of air to feed:)

Thanks for your responses.
 
I'm an air hog as well...big guy, big lungs, and all that. I even bought my wife a longer octo hose so I can get on her "Hose of Shame" so it's more comfortable for both of us. About 5 years ago, we started diving with an op that uses the steel hp 120 tanks. That made it much more enjoyable for everyone around. Even when I would upgrade to the AL 100 tanks, it didn't seem to make that much difference. The steel 120's give us 90 minute dives. She dives a HP100 and it usually works out perfect now. If we start deep and stay deep, I may need her hose for 10 minutes or so just to extend the dive before going back on mine for the ascent. I believe the three ops using the steel 120's are Aldora (our choice), Living Underwater, and Liquid Blue. Unless your married to your dive op, which I completely understand, you might give the big tanks a try.

Good luck, safe travels,
Jay
 
I didn't think of that too - bring a seven foot hose and have the shop swap the hose out on your wife's 2nd - heck even if you are doing 100's - you paid for it, breathe it!

I have one here that I rarely use unless I'm working by then or sidemount diving - you're more than welcome to try it.
 

Back
Top Bottom