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Tino de Rijk · 2nd January 2008, 14:34

"Warm water" is a relative thing...... "warm" in holland (or even France or Spain) is around 20 C, good enough for a thin wetsuit, not good enough for a fibrepile. That in my book is "hot" diving :-)).

I can understand your favor for a double wing, but that also IMHO is depending on dive profile. When I dive wet, and my trim is good, a BCD failure can be easily compensated by either running the CL's a bit bigger (assuming that, as part of your proposed better educated diver in terms of buoyancy, he also adheres to the minimum loop volume mantra - if only to avoid backaches, like in my case....) or dropping part of his weight (easier these days with integratred weight pockets). Although I hate them for big weights (as necesary with some drysuits), they can fit a nice role as "droppable" part of an overall weight system: main part on your good old belt, droppable part on the dispensable pouches. You may want to consider such (limited capacity) pouches in your design.
So no need for the double wing in my view in many cases.
As a reference: a standard prescribed IANTD drill is showing that you can hover and ascent with a failing BCD/wing. An SMB also does the trick.
But again, Alex: personal preference. To me a double wing is clutter as well on the average not-so-deep dive.

ciao,

Tino.

Quote: (Originally Posted by AD_ward9)

Your point on wet suits is a good one. I use either a dry suit or just my shorts. My wet suits have not been used in years: mine weight a lot and take too much baggage space so when going somewhere with warm water packing a thin fibrepile is enough to stop the rebreather bolts and clips from wearing a hole in my back.

There are two situations where one needs to dump buoyancy during the dive: gas emptying from tanks and wet suits. These issues mean that a BCD, perhaps with just an injector, will have to stay on RBs when they leave the factory, and the BCD-less unit just a personal unit.

So we are definitely then restricting this to personal use. A 0.6l tank feeding a single wing would have the same effect as what I am proposing: it is just I prefer the dual bladder. Using a cheap flow orifice means one only needs the cylinder and the tank valve (no reg).

Thanks for your suggestions and thoughts about this,

Alex

2nd January 2008, 14:34	#35 (permalink)
Tino de Rijk Old, maybe one day wise Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Evolution Join Date: Mar 2006 Location: Amsterdam Posts: 345	Re: Getting rid of the last bits of junk ... "Warm water" is a relative thing...... "warm" in holland (or even France or Spain) is around 20 C, good enough for a thin wetsuit, not good enough for a fibrepile. That in my book is "hot" diving :-)). I can understand your favor for a double wing, but that also IMHO is depending on dive profile. When I dive wet, and my trim is good, a BCD failure can be easily compensated by either running the CL's a bit bigger (assuming that, as part of your proposed better educated diver in terms of buoyancy, he also adheres to the minimum loop volume mantra - if only to avoid backaches, like in my case....) or dropping part of his weight (easier these days with integratred weight pockets). Although I hate them for big weights (as necesary with some drysuits), they can fit a nice role as "droppable" part of an overall weight system: main part on your good old belt, droppable part on the dispensable pouches. You may want to consider such (limited capacity) pouches in your design. So no need for the double wing in my view in many cases. As a reference: a standard prescribed IANTD drill is showing that you can hover and ascent with a failing BCD/wing. An SMB also does the trick. But again, Alex: personal preference. To me a double wing is clutter as well on the average not-so-deep dive. ciao, Tino. Quote: (Originally Posted by AD_ward9) Your point on wet suits is a good one. I use either a dry suit or just my shorts. My wet suits have not been used in years: mine weight a lot and take too much baggage space so when going somewhere with warm water packing a thin fibrepile is enough to stop the rebreather bolts and clips from wearing a hole in my back. There are two situations where one needs to dump buoyancy during the dive: gas emptying from tanks and wet suits. These issues mean that a BCD, perhaps with just an injector, will have to stay on RBs when they leave the factory, and the BCD-less unit just a personal unit. So we are definitely then restricting this to personal use. A 0.6l tank feeding a single wing would have the same effect as what I am proposing: it is just I prefer the dual bladder. Using a cheap flow orifice means one only needs the cylinder and the tank valve (no reg). Thanks for your suggestions and thoughts about this, Alex Last edited by Tino de Rijk : 2nd January 2008 at 14:37.
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