Wing Lift For Double Hp100

[CAPTAIN SINBAD]

Can a 60 lb wing lift hp100 doubles with an hp100 deco bottle (3 hp100s)?

Why would you want to dive in that configuration?

 

[CaptainJackBrittan]

To expand a bit on runsongas's point concerning trim.

Your question is one for your instructor, and if your instructor is advocating using negative steels for deco / stages you *might* want to expand your instructor search a bit.

To your questions concerning lift: Wing capacity is a function of the volume of your back gas, and the buoyancy of your exposure suit, not tank material.

You provided the volume of back gas, but zero info on the exposure suit.

Tobin

I would like to dive wetsuit if possible with this configuration. Trying to figure out how I can get the maximum bottom time amount using a large third cylinder as staging and for decompression.

 

[tbone1004]

I would like to dive wetsuit if possible with this configuration. Trying to figure out how I can get the maximum bottom time amount using a large third cylinder as staging and for decompression.

it'll lift it but you'll be severely lopsided, it's also VERY dangerous to do that in a wetsuit. Highly recommend looking at AL80's for stages and 40's or 80's for deco because you won't be able to stay flat with a 100 on your side. Guaranteed

 

[CaptainJackBrittan]

Why would you want to dive in that configuration?

More bottom time. I don't believe in alu cylinders as to toxicity of imperceptible oxidation over the long term. I believe steel oxidation is more noticable and not as harmful for the lungs.

 

[CaptainJackBrittan]

it'll lift it but you'll be severely lopsided, it's also VERY dangerous to do that in a wetsuit. Highly recommend looking at AL80's for stages and 40's or 80's for deco because you won't be able to stay flat with a 100 on your side. Guaranteed

Thank you very much for the advice. Just wondering if the 60lb OMS Tesseract wing will be able to pull me up with three hp100's in a 5/4mm wetsuit as I also have an OMS side mount tech adapter (could go sidemount to be less lopsided if that would help).

 

[RyanT]

Just wondering if the 60lb OMS Tesseract wing will be able to pull me up with three hp100's in a 5/4mm wetsuit as I also have an OMS side mount tech adapter (could go sidemount to be less lopsided if that would help).

As others have already said, using a steel HP 100 for a deco bottle just isn't safe. tbone already told you that the wing will lift it. From a trim, weighting and overall safety perspective, however there is just no reason to do this. You can carry more gas in an AL 80 plus 40, your trim will be better, and you won't have the negative buoyancy issues in the event that things go sideways. There is a reason why virtually all open water tech divers arenusing AL 40s and 80s for deco bottles.

 

[tbone1004]

Thank you very much for the advice. Just wondering if the 60lb OMS Tesseract wing will be able to pull me up with three hp100's in a 5/4mm wetsuit as I also have an OMS side mount tech adapter (could go sidemount to be less lopsided if that would help).

I wouldn't get an OMS wing personally, terrible company to deal with, but while it will pull you up, it is not possible for it to keep you stable side to side, and sidemount will not help with that.

regarding your concerns with aluminum, the key is to keep them cycled, but it's not something that I have ever heard of causing a problem for someone. They are the standard for a reason and while we would all love to use steel deco bottles, the unfortunately harsh reality is they are just horribly out of balance

 

[RyanT]

More bottom time. I don't believe in alu cylinders as to toxicity of imperceptible oxidation over the long term. I believe steel oxidation is more noticable and not as harmful for the lungs

Millions upon millions of dives around the world, people living healthy lives for decades afterwards, and a complete lack of empirical studies indicate that this idea is unfounded. On the other hand, if you find yourself in an emergency situation and are massively over-weighted, the health consequences of this configuration will rapidly become apparent.

 

[swimlikethefish]

All I can picture is these 3 steel 100's. I dive doubled steel 100's 90% of the time. I can tell you without a doubt they are heavy. Maybe it would be a good idea to go pick up a set of doubles and carry them to your car. Then you would have the appreciation for what we are talking about.

Or for practice put on your doubles, then take a 10lb weight and put it on your weight belt to one side. See how well your dive goes. That would be the equivalent. The air would weigh - 8lbs and the cylinder is - 2 with a valve if it's a Faber.

*edit: please do not get in freshwater with doubles and an additional 10lb weight with a 60 lb wing. Unless you have a lift bag. You would definitely submerge. I just don't think you would make it back up.

 

[RyanT]

*edit: please do not get in freshwater with doubles and an additional 10lb weight with a 60 lb wing. Unless you have a lift bag. You would definitely submerge. I just don't think you would make it back up.

+1. I normally dive salt water. I did a dive last summer in freshwater with double steels (and two al 40 cf bottles), wearing a 4/3 suit. I was astounded how heavy I was. I got tired of that really quickly and unclipped one bottle and handed it to my buddy. A big wing can lift it, but it takes a lot of gas and your buoyancy swings happen quickly. Not a good combination.