Help with Doubles

[stuartv]

This is inconvenient to some, a design error to others, but the lack of a crossover is actually fairly convenient if you are diving a DIR style rig with all of your stages/deco bottles on the left, or if you have any other sort of imbalance in your rig so you can balance out by packing air into one side or the other.

Interesting. I posted a couple of months that my tech instructor told me pretty much exactly that as the reason he prefers a horseshoe. I was flamed and told that my instructor is incompetent.

 

[tbone1004]

i believe that was another reason unrelated to the preference of horseshoe vs. donut....

 

[stuartv]

i believe that was another reason unrelated to the preference of horseshoe vs. donut....

As an example, I said this:

I asked my instructor about horseshoe vs donut on this wing. He said that he prefers the horseshoe when he's diving with slung AL80s because it makes it easier for him to shift some air over to the side with the slung bottles to balance them out and keep horizontal trim. When he's diving with 2 x AL80s, he slings them both on the left, to keep them off his canister.

And that exact piece of my post was quoted within this response:

Might be time for your instructor to take some classes that will teach him about buoyancy control and trim. At minimum someone needs to explain the buoyancy characteristics of an AL80 to him.

 

[tbone1004]

you can ask Ray, but I believe that was more in reference to the real reason to put the 80's on the left. Little to nothing to do with the canister... I can't comment on the buoyancy/trim from him.

 

[decompression]

I imagine it's to do with the fact many al80's are pretty much neutral or slightly neg (stage bottles rarely go anywhere near empty) especially if he's using al80's as deco bottles with trimix. If they are on his left, I assume they are deco and not stage bottles.


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[CptTightPants21]

I imagine it's to do with the fact many al80's are pretty much neutral or slightly neg (stage bottles rarely go anywhere near empty) especially if he's using al80's as deco bottles with trimix. If they are on his left, I assume they are deco and not stage bottles.


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No.

Can't comment on others, but GUE has all bottles on the left regardless of stage or deco.

I believe the primary reason for this is to be able to safely deploy long hose on an OOA.

Not hurting the canister light is another good example. In DIR, the left is the working hand and the right is for emergency. So the right pocket would have emergency items that aren't part of the normal dive plan...you don't need a stage bottle getting in your way in the event of an emergency.

 

[Michael Guerrero]

Michael, thanks. That's what it feels like. I can't seem to manage the bubble with doubles. Feels quite different than my Tec set up


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---------- Post added October 25th, 2015 at 10:31 PM ----------

Recreation set up


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It takes time to learn how to manage the bubble with doubles. For what it's worth, this is not a true horshoe wing. It has a narrow bottom channel so air can move to either side. Nonetheless, practice and learning how much gas to put in the drysuit vs. the wing should short out these kinds of imbalances.

Even if you're in a wetsuit, you should be able to manage the role with the wing for the most part. After 100 dives in doubles you'll forget that you're carrying two stage bottles on the left and feel perfectly balanced .

 

[decompression]

No.

Can't comment on others, but GUE has all bottles on the left regardless of stage or deco.

I believe the primary reason for this is to be able to safely deploy long hose on an OOA.

Not hurting the canister light is another good example. In DIR, the left is the working hand and the right is for emergency. So the right pocket would have emergency items that aren't part of the normal dive plan...you don't need a stage bottle getting in your way in the event of an emergency.

Instructor isn't GUE.


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[kensuf]

Ditch the bungee.

Loosen the shoulder straps enough that you can ball a fist under it. Make sure they're also the same length.

Tighten the crotch strap enough so it's snug.

Tighten the waist strap enough that it's snug.

Arch your spine:

Tilt your head back:

Relax.

 

[tbone1004]

the other way to practice what ken said is the following

lay prone with your hands out in front of you, fingers laced together

bend your knees so your lower leg is vertical

arch your back so your knees and elbows come off of the floor. This is the position you should be in. Practice until it is somewhat less uncomfortable and that will go leaps and bounds to helping with all of this. You need to develop the muscle memory to automatically make adjustments to compensate for any imbalance. That just takes a lot of time hovering against a wall