Josh Levinson
Registered
Hey everyone,
I have the OMS bungeed dual 100 lb lift wings, and don't like them, so I'm looking for a new set of wings.
I'm focusing right now on the Halcyon 55 lb wings. I've had a good look at them, and I'm quite impressed. The absolute only hangup I have over them at this point is that they only have a single bladder.
Now, I understand that streamlining is an important issue, and fully agree that you need to be as streamlined as possible. But I don't think you should streamline at the expense of redundancy (within reason).
I've heard people say that as long as you have a drysuit, you don't need a double bladder. Then I ask, well does a drysuit provide enough lift on its own? The answer is usually "yes," but I'm not convinced of that.
Then they say, well, you should have a balanced rig, so you shouldn't need all the lift of your drysuit in the event of a bladder failure. But how do you get a perfectly balanced rig? You always have to start off more negative than you need to be at the end of the dive, cuz you use up gas during the dive. What happens if you have a bladder failure early in the dive, where you're the most negative?
The other issue is, what if you dive in a neoprene drysuit? Then you'll need more weight at the surface, but at depth you'll be overweighted, and therefore won't have a "balanced rig."
And if you dive in a wetsuit, what's your buoyancy redundancy there? Some people say a lift bag. But I'd like to see someone using a lift bag in an emergency (i.e. task loading) situation to lift themself from 300 ft.
But then people say, you attach your reel to the bag, and send it to the surface and ascend on the line. Okay, but then when I ask them the length of their lift bag line, they say 100 ft. That ain't gonna do you much good if you're at 200 or 300 feet.
So I know I'm going on a bit, but I'm just trying to start a discussion on the matter, and pull out some useful information so that I'm able to convince myself (or not) that a single bladder is acceptably safe.
Thanks a lot for your input (and patience reading this thing).
Josh
I have the OMS bungeed dual 100 lb lift wings, and don't like them, so I'm looking for a new set of wings.
I'm focusing right now on the Halcyon 55 lb wings. I've had a good look at them, and I'm quite impressed. The absolute only hangup I have over them at this point is that they only have a single bladder.
Now, I understand that streamlining is an important issue, and fully agree that you need to be as streamlined as possible. But I don't think you should streamline at the expense of redundancy (within reason).
I've heard people say that as long as you have a drysuit, you don't need a double bladder. Then I ask, well does a drysuit provide enough lift on its own? The answer is usually "yes," but I'm not convinced of that.
Then they say, well, you should have a balanced rig, so you shouldn't need all the lift of your drysuit in the event of a bladder failure. But how do you get a perfectly balanced rig? You always have to start off more negative than you need to be at the end of the dive, cuz you use up gas during the dive. What happens if you have a bladder failure early in the dive, where you're the most negative?
The other issue is, what if you dive in a neoprene drysuit? Then you'll need more weight at the surface, but at depth you'll be overweighted, and therefore won't have a "balanced rig."
And if you dive in a wetsuit, what's your buoyancy redundancy there? Some people say a lift bag. But I'd like to see someone using a lift bag in an emergency (i.e. task loading) situation to lift themself from 300 ft.
But then people say, you attach your reel to the bag, and send it to the surface and ascend on the line. Okay, but then when I ask them the length of their lift bag line, they say 100 ft. That ain't gonna do you much good if you're at 200 or 300 feet.
So I know I'm going on a bit, but I'm just trying to start a discussion on the matter, and pull out some useful information so that I'm able to convince myself (or not) that a single bladder is acceptably safe.
Thanks a lot for your input (and patience reading this thing).
Josh