Halcyon products confusion

[BarryNL]

Great, let us know how you like it. FWIW - I dive doubles with the Evolve and love it.

Well, diving the tech doubles was good fun - damn hard work walking up four flights of stairs to the swimming pool with doubles on, but a worthwhile experience. I'm off to try an open water dive with the full tech-gear next weekend but I have to say, even on just the swimming pool session, I can see the advantage of a BP/wing over a BCD for trim and stability.

 

[PerroneFord]

Welcome to collective. Resistance is futile.

 

[vioch]

Could anybody(who dives in cold water with a drysuit, thinsulate 400 and steel tank) confirm that 30lb wing is enough?

 

[PerroneFord]

Is your tank more than 30 pounds negative?

 

[dbulmer]

Vioch,
I've seen people with 30lb wings but my own preference is for 40lb wing. Having a slightly bigger wing is useful for performing buoyant lifts with buddies in twinsets.

 

[PerroneFord]

Vioch,
I've seen people with 30lb wings but my own preference is for 40lb wing. Having a slightly bigger wing is useful for performing buoyant lifts with buddies in twinsets.

This is pretty dangerous to do. Hopefully the "buddy" is using redundant buoyancy of their own if they are diving twinsets.

 

[dbulmer]

How is it dangerous?

 

[vioch]

Is your tank more than 30 pounds negative?

No. It is only 11lb negative full. But besides tank my gear will include SS backplate, hid, belt's weights( do not know how much, because my Thinsulate 400 undergarment hasn't arrived yet and i have no idea what will be the buoyancy of my drysuit with it), etc.
I just try to understand what wing should i buy.
That is why i asking advise from divers with identical configuration.
If for most divers 30lb is enough (with such configuration) than let it be 30lb.

 

[PerroneFord]

No. It is only 11lb negative full. But besides tank my gear will include SS backplate, hid, belt's weights( do not know how much, because my Thinsulate 400 undergarment hasn't arrived yet and i have no idea what will be the buoyancy of my drysuit with it), etc.
I just try to understand what wing should i buy.
That is why i asking advise from divers with identical configuration.
If for most divers 30lb is enough (with such configuration) than let it be 30lb.

Yes, I understand why you are asking. And that is somewhat worrisome. Look at it this way.

The wing must be able to float your gear without you in it. That is it's job. Unlike wearing a wetsuit, the wing will not have to support you becoming more negative as you descend. Therefore you only need the wing to help you compensate for your gear. As for you personally, you need to only wear enough weight so that you can sink your undergarment (and drysuit if it's neoprene).

If we assume that you need 25 pounds to sink your undergarment, and your gear is 10 pounds negative while full of air, then you'd need 15 more pounds with full tanks, and then you add what is necessary to offset the weight of the air in your tank. In this case the wing would need to be able to support 15 pounds (plus a bit for a safety margin). If you were diving a wetsuit, you'd need quite a bit larger wing.

 

[PerroneFord]

How is it dangerous?

You're asking how using a BC as a lift bag is dangerous? Really?