Diver Dennis
Contributor
AAAAAcccckkkk! I think your brother is back on SB.
http://www.scubaboard.com/showthread.php?t=150800
http://www.scubaboard.com/showthread.php?t=150800
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
kjundvr:I would avoid using AL80's for a double set up. The become far to bouyant when empty and that just adds to you having to wear more weight.
SparticleBrane:^ I was always under the impression that Al80s are ~4 pounds positive when empty, times 2.
Double 80s are most definitely positive when empty. Throw an empty single 80 into the water and watch it float.Stephen Ash:Actually... twin Al80s are negatively buoyant when empty... maybe they aren't as negative as one might like... but... they still sink. Of course, steels might be prefered if you are looking to take some weight off your belt.
They make great doubles. If you need the gas then a set of larger volume steels would be better.