Using a doubles wing on a single tank

[Storker]

I also don't agree double is easier to dive than single. Given a dive I can do with single tank, and if I have single set available to me, I will definitely do it in single. Everything is just easier, less mass to move around, less drag, less negative with full tank, a lot more mobile.

There's got to be something region-specific here. On this side of the pond, a small doubles set like a D7x300 or D8.5x232 isn't particularly heavier than a single with the same capacity (15x300, a real b!tch to lift and handle). I've got mates who use a D6L, which has the same capacity as a 12L and really makes for a sleek low-profile rig. And if you're of the 'balanced rig' persuasion (not that there's anything wrong with that), what does it matter whether the weight is in the tanks or bolted onto the BP?

I'm using singles myself (a single off the rig is easier to stow in my 18-footer than a doubles set bolted onto the BP/W), but I just can't grok that what you guys are saying when I look at my doubles diving clubmates and listen to what they're saying.


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[RJP]

See, I disagree! I would dive doubles all the time, if somebody else would do all the hauling of them. I love the stability and the way the negative nature of the tanks spreads out over my back. I appreciate the extra gas AND the redundancy.

I've dove double steel 119's locally for nearly a decade. Seriously considering switching to AL80s though, especially after my recent trip to Truk... and the fact that I'm a decade older now than I was a decade ago. (Even though I'm far more physically fit now than I was then.)

AL80s are like diving in a light jacket after a set of steel 119s! A single 80 is like diving naked.

 

[cool_hardware52]

I've dove double steel 119's locally for nearly a decade. Seriously considering switching to AL80s though, especially after my recent trip to Truk... and the fact that I'm a decade older now than I was a decade ago. (Even though I'm far more physically fit now than I was then.)

AL80s are like diving in a light jack after a set of steel 119s! A single 80 is like diving naked.)

Fat fills in a set of 2x LP45's or 50's approaches the volume of 2 x al 80's in a tiny package. I love mine. They are my "single tank rig" (Does require a friendly fill station)

Tobin

 

[RJP]

Fat fills in a set of 2x LP45's or 50's approaches the volume of 2 x al 80's in a tiny package. I love mine. They are my "single tank rig" (Does require a friendly fill station)

Tobin

Nothing approaches twin 119s filled to 4,500 though. Or at least that's what I hear, anyway.

:blinking:

 

[cool_hardware52]

Nothing approaches twin 119s filled to 4,500 though. Or at least that's what I hear, anyway.

:blinking:

No doubt.

Tobin

 

[eelnoraa]

A single 80 is like diving naked.)

This is exactly how I feel with AL80 (vacation rental) after diving double exclusively for about 2 years. Not that I don't like singles, just I turned all my singles to double. Maybe I should start looking for big singles again

---------- Post added March 20th, 2015 at 11:02 PM ----------

And if you're of the 'balanced rig' persuasion (not that there's anything wrong with that), what does it matter whether the weight is in the tanks or bolted onto the BP?

It is not about balanced or not balanced. Both can be balanced, but mass is mass. Having less overall weight (although both netural) is just easier.

 

[cool_hardware52]

It is not about balanced or not balanced. Both can be balanced, but mass is mass. Having less overall weight (although both netural) is just easier.

For me doubles are easier to dive, the added mass makes everything happen slower, including buoyancy changes.

Doubles are more work out of the water, but I do like the fact they don't roll around in the back of my truck.

Tobin

 

[Storker]

Having less overall weight (although both netural) is just easier.

My point was rather that in some waters (like mine), "less overall weight" just isn't an option due to the amount of exposure protection you need. And if that's the case, lighter tank(s) = more lead on the belt or on the BP. Or corking.

 

[RJP]

Maybe I should start looking for big singles again