Fun in doubles...

[Greenwood_60]

Be sure the backup is completely empty.

Yep, empty. I inflate the primary 100% then push the button on the backup to make sure its empty before diving. I have kept them both partially inflated when stored.

[Line Squirrel]

I got my first dive in my PST 104s yesterday. Everything went well except one thing... I spent my entire time fighting being flipped on my back, and a fair amount of the dive on my back.

Here is my setup:
Doubled PST 104s 3300 psi down to about 500
5mm wetsuit and hood
ABS backplate
Dive Rite dual rec wing

My theory is the wing is not wide enough for doubles that big. I have an older dive rite wing that is wider (AFAIK its what became the "classic"). Am I on the right track? Or do you guys all have some superhuman ability to fight flipping over all while frog kicking so gracefully? And I imagine having to use a drysuit for emergency buoyancy would be a mother ******!

OK, I'm not going to respond to all the other posts, just the OP's original post....

IMHO...

A wreck wing (single or dual bladder) is too small for a set of double 104's

[stairman]

Mke might be right on what he said but the 108's and 95's are the same width, so the wing not being wide enough isnt the case. I have dove a 3 mill with stage and had plenty of lift but Im only 150 lbs too.

[Greenwood_60]

(1) A wreck (rec?) wing (single or dual bladder) is too small for a set of double 104's.

Please explain why. It has more than enough lift (big enough volume wise). Like I said, I think it's to wide enough. As in the lift is squashed below the tanks, rather than wrapping them at all, giving me the lead stuck to a balloon feeling. So if it not being wide enough is what you mean, I agree.

(2) If you keep getting flipped over on your back, it's not the wing.

Then what is it?

[Greenwood_60]

...plenty of lift but Im only 150 lbs too.

Damn... i'm almost double that... haha. Since most people float, and add larger items that float more the bigger you are, I would think on average, little people (no offence ment Randy...er, and Russle... and FW...lol) would need more lift than big people (that list is so much longer!)... Im sure the SAC rate of us big people means we bring enough extra tank to more than over compensate for the extra lift though.

[FW]

I have never tried a rec wing with 104s, but Mike may be right. If you have to put a lot of air in it to float the tanks, you might get the "weight-balanced-on-a-balloon" syndrome. Since a classic wing is wider, the same volume of gas rides up higher up on the sides of the tanks, getting the lift above the tanks.

A buoyant diver may make the balance even worse, since there will be more lift below the tanks.

[Greenwood_60]

I will try the classic wing next time. I will have to pick up a SMB or something though. The wings are old and well worn, and I don't feel like tempting Murphy...

[huxley]

keep in mind that when you dive doubles you do not dive the regular open water style. meaning if you see something t your left all you do is turn your head not trying to roll your body you should always stay horizontal with your body, meaning not standing up with fins down or head down fins up. same with left and right if you rotate you will start rolling with doubles. some people need two or three dives some maybe 20. look at the cave dive profile and try to do the same. I don't think its the wing. more practicing

[K Mejean]

If I may.. let me throw out a suggestion here. Go with a Hollis 55# wing. They are relatively inexpensive and hold up really well. I dive with steel 112's and they are real wide. The Hollis goes around the outside of them very nicely and I don't have any issues with rolling over.

[stairman]

I found this site that says the lift for that wing will be good up to and including 2 steel 95's. It may indeed be the wing is too small, or from my perspective the tanks are too big.http://store.gilldivers.com/dive-rite-dual-rec-wing