Twix
Registered
Hi all
Is it possible to use Dacor Viper octo with Aqualung Legend reg?
Is it possible to use Dacor Viper octo with Aqualung Legend reg?
Octo for Legend
- Thread starter Twix
- Start date
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
scubafanatic
Contributor
- Messages
- 5,090
- Reaction score
- 914
...yes, it's possible...but it will likely make servicing more complicated unless your local dive shop (or whoever services your regs) handles both brands....if you have a reg problem, the Aqualung dealer will blame the Dacor part...or the Dacor (Mares) dealer will blame the Aqualung part...so you end up with a bunch of finger pointing at each other and you're stuck in the middle...so be careful.
Short answer, Yes
Besides the repair issues mentioned by scubafanatic another question is how well do you wish the Viper to perform? I'll preface this by saying I'm not sure whether the Viper is balanced or not. Pneumatically balanced in AquaLung terms.
The Legends 'over balanced' feature increases the intermediate pressure as the reg goes deeper, while some feel you must use a balanced octopus with the Legend, or the increased pressure may cause the non-balanced 2nd to leak eventually at depth, how deep, I don't know for certain, where a balanced 2nd would automatically compensate.
All Legend 2nds are balanced.
Some will say it just doesn't matter, and use non-balanced 2nds with the overbalanced firsts, and don't seem to have problems. I believe you would have a slight leaking rather than full free flow.
Besides the repair issues mentioned by scubafanatic another question is how well do you wish the Viper to perform? I'll preface this by saying I'm not sure whether the Viper is balanced or not. Pneumatically balanced in AquaLung terms.
The Legends 'over balanced' feature increases the intermediate pressure as the reg goes deeper, while some feel you must use a balanced octopus with the Legend, or the increased pressure may cause the non-balanced 2nd to leak eventually at depth, how deep, I don't know for certain, where a balanced 2nd would automatically compensate.
All Legend 2nds are balanced.
Some will say it just doesn't matter, and use non-balanced 2nds with the overbalanced firsts, and don't seem to have problems. I believe you would have a slight leaking rather than full free flow.
Bubbletrubble
Contributor
For several years I dove with an Aqualung ABS octo connected to a Legend first stage. The ABS octo is not balanced. Under real-world diving conditions, it didn't breathe as well as my Legend second stage...but it did fulfill the requirement of a functional alternative air source. The reg tech simply de-tuned the octo so that there were no free-flow issues at the surface and at depth. No big deal. I'm not familiar with the Viper octo, but I suspect that it can be de-tuned much like my ABS octo was. Good luck.
.Similar threads
