[Gary Jeffries]

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As I mentioned a couple of days ago, I tried out twin 12's for the first time this week.

When diving with a single, my SAC averages 23 l/min. My first two twin 12 dives (at similar levels of exertion), I was at 19 l/min. Why might this be - has anyone else experienced something similar?

Cheers
Gary

PS - happy new year to all on YD

 

[David Wallace]

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Could be your better streamlines?

Have you changed anything else? how are you working out your SAC?

Regards

 

[Gary Jeffries]

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Nothing else changed..... and using a bunch of similar dives as Horsea as a sensible benchmark.

Just using the standard formula, plugging in the average depth for the dive.

 

[Dominic]

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It's highly likely that, because you knew you had shedloads of gas with the twinset, you were more relaxed for the dive and therefore breathed less.

 

[kramynot2000]

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I'm thinking better trim as well.  When diving with my twins, I'm a little head heavy because of the manifold which puts me in a very horizontal position.  With a single, it feels like I have nothing on so I find that many times I'm actually a little head up.

 

[Janos]

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What Dom said.

It happened to me when I switched to twins a couple of months ago. I always used to be, well not worried, but watching my air and now I don't have to.

Laters,
   Janos

PS - I do still monitor my air, but you know what I mean

 

[Helen F H]

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<font color='#000080'>I dont think i have ever come up with less than about 75 bar in each 10 (including to 45m and about 15 mins deco).  But then im a girl (breathe less) and i swear someone way back in my ancestry got a bit funny with a dolphin.

 

[Scuba1]

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<font color='#000080'>So Porg where is you blowhole then

? ? ? ?

 

[David Wallace]

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Quote[/b] (Scuba1 @ Jan. 02 2004,22:14)]So Porg where is you blowhole then

? ? ? ?

After all the recent stuff about Porg.... you need to ask?  

 

 

 

 

[Helen F H]

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<font color='#000080'>Oi! Leave my blowhole out of this!