Enough lift?

[clownfishsydney]

No, that is how at least Hollis and Oceanic rate their BCDs according to the owner. The lift quoted is only when it does not have anyone using it!

 

[ams511]

Are you factoring in if one or the other has a wing failure and one of them needs to get the other off the bottom in a controlled manner? I recommend 35 lb to 40. lb.

ams,

No I'm not factoring in a wing failure. You can only take redundancy/backup systems and "factors of safety" so far. A total spontaneous wing failure is hard for me to fathom. A wing failure shouldn't be catastrophic in a properly weighted diver anyway and you should always have the ability to ditch weight in a true emergency.

boat

If you drop a 22 lb belt at the bottom the chances are the diver is going to shoot to the surface pretty fast and the buddy will not be able to control the ascent. I can imagine a wing failure if the inflater gets damaged. In the DIY section there are threads from people that damaged the fitting holding the inflater to the BC, so it does happen.

---------- Post added June 3rd, 2013 at 09:31 PM ----------

No, that is how at least Hollis and Oceanic rate their BCDs according to the owner. The lift quoted is only when it does not have anyone using it!

I think that is how most manufacturers rate the lift of a BC. Although I remember Dive Rite switching to more conservative numbers.

 

[boat sju]

ams,

We're probably both getting too hypothetical and assuming different things. I usually dive with a weight ratio of maybe 60/40% belt to trim pocket. So I could dump a trim pocket and be ok. You're right, I wouldn't want to drop my 22# belt. It's possible that the OP is still considering a weight integrated bc - so we're off on a whole different tangent.

Anyway, it's all good stuff to think about - I hope.

boat

 

[decompression]

Here is a link to a video that shows the results of deep diving with a wetsuit......

NOWDIVE TV Balanced rig on film - Unified Team Diving