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
frogdrvr:Getting a new wing to use for steel HP 100 cylinder. Dive NC wrecks down to 130. How much lift do I really need??? 30 or 40lb???
Fogdrvr
cool_hardware52:Wing Lift is more about exposure suit than tank.
If diving wet, roll up the suit, throw it in the pool and add weight 'till it's nuetral.
If diving Dry, put on DS with the undies you use, get in the pool, no other gear. Vent till you have a "normal" amount of air in the suit.
Grab a weight bag and add weight 'till you are nuetral.
Either amount of weight represents the max you can loose, or need be compensated for.
Wetsuits will be somewhat positive down to ~165 FSW.
If you suffer a total flood of a DS, you can't loose more than the valuse of the test weight.
As long as you are neutral at the surface with no gas in your wing these calc's are valid.
It takes a hugh thick wetsuit, or a DS with thick undies on a big guy before you need more than 30 lbs in my experience.
Regards,
Tobin
Dan Gibson:The wing should provide enough lift to float the rig without the diver in it.
frogdrvr:How about body composition??? Does it make a difference. I am very lean. I float well on the bottom of the pool/ocean.
Frog