"proper" weighting vs Rock bottom

[JeffG]

Even with 21/35 and 21/35 in an 80 and 50% in the 40, my 40 pound explorer was a bit underpowered. Might be time to look at a new wing.

Those Exploder's must not be close to 40 then. My AGIR 38 works in fresh water, nitrox and either 2 40's or 1 80.

 

[in_cavediver]

You just can't do it as a beginner. (I mean, think about the guys who are diving doubled 130's AND carrying stages -- I can't even IMAGINE how "overweighted" they are at the beginning of a dive!)

Lynne, its my expierence that once your comforable diving doubles and being overweighted, more weight doens't make that much of a difference. Going from 104's to 85's made no difference. The wing did it's job whether its 13lbs, 20lbs or 30lbs. I doubt you would see much difference underwater assuming the tanks fit you. (above water yes, it would be a signifcant difference).

I do agree though about beginners. They are struggling with the basic buoyancy and trim. Gross overwieghting is a bad thing. (so is underweighting as well). The cure - go dive. (preferably with someone who can help with trim etc as well).

 

[caseybird]

With this weighting, you should also be able to redescend by simply exhaling hard, even with a near empty tank.

With a near empty tank (< 200psi) descending may not be a good option.

 

[limeyx]

Those Exploder's must not be close to 40 then. My AGIR 38 works in fresh water, nitrox and either 2 40's or 1 80.

I think the actual lift is OK, but the position in the water guarantees me a continual mouthful of water (I float so that my mouth is just under the surface)

Irritating

I am off the H crap anyway. Deep Sea Supply gets my wing business in future.

 

[lamont]

We use them in fresh water using nitrox. If you are not paying attention.....can you say dirt dart.

We've been practicing our deco bottle handling with double-130s full of nitrox and Al40s. When you've got a leash full of all three deco bottles and full 130s that's about #32 overweighted... I would not want to do an actual technical dive rigged up that way, but its great practice...

 

[JeffG]

We've been practicing our deco bottle handling with double-130s full of nitrox and Al40s. When you've got a leash full of all three deco bottles and full 130s that's about #32 overweighted... I would not want to do an actual technical dive rigged up that way, but its great practice...

Well, swap out the nitrox for 10/70 and add in an 80 with 10/70 and you got the rig that was being used for the Athel Viking in Halifax. Plus add in a scooter, video camera

 

[lamont]

Well, swap out the nitrox for 10/70 and add in an 80 with 10/70 and you got the rig that was being used for the Athel Viking in Halifax. Plus add in a scooter, video camera

What they use for the Admiral Sampson here is 10/70 backgas, 2 x 10/70 Al80 Stage, 1 x Al80 (21/35?), 1 x Al40 50, 1 x Al40 O2, Gavin shortbody, video camera. They're crazy though...

 

[Soggy]

That's kinda hard to do, so with as little pressure in your cylinder as possible (so you can breathe) adjust your weighting for neutral at the surface (or more correctly, just below the surface), since the ascent from 15/5 (or 10/3, if you're doing formal decompression) is the most critical for making a slow, controlled ascent.

It's easy to do. Weight yourself to be neutral with *any* pressure in your cylinder, say 1500 psi. Figure out how much the gas in your cylinder weighs (in this example, 1500 psi) (~1 pounder per 13 cft of air), and add that to your weight belt. Done.

 

[roakey]

It's easy to do.

Perhaps I should have added a smiley. Doing anything with zero pressure is difficult.

Roak

 

[Soggy]

Perhaps I should have added a smiley. Doing anything with zero pressure is difficult.

Roak

I understood what you were saying. Breathing water don't work too well.

I was just bringing up that you can calculate your weighting requirements without being anywhere near an empty tank because it is easy to figure out the weight of the gas in our tanks. A lot of people don't seem to realize that fact, and I wanted to mention it. If I get too light on a dive I figure out what I was breathing, how much that gas weighs, and I add that weight to my belt.