Air consumption

Joshua Smith · Post by **Joshua Smith** » Tue Nov 07, 2006 6:19 pm

Well, maybe I shouldn't even talk about it here, but I'm going to anyway.
Last night, I met my buddy for a dive. After gearing up in the rain, in the dark; I strapped on my computer, turned it on, and found out the batteries were kaput. Well, I really wanted to dive, so here's what I did- I hooked the SPG from my pony bottle to my tank, which sounds good, except for one small detail: It's on a 6 inch hose, and I was unable to read it. So, every few minutes throughout the dive, I had my buddy read my pressure. I know, I know, it's NOT a good idea, and nobody should ever do this under any circumstances, ever. And I probably won't. In my defense, I'll point out my 40 cf pony bottle, and the trustworthiness of my buddy.(who I'm not naming so as not to implicate him in my foolhardiness).

Here's the interesting part: my buddy has excellent air consumption, and I, well, don't. But when I couldn't see my air pressure, I kind of chose not to worry about it, and I relaxed more than I think I ever have underwater, and I had really great air consumption- with a profile like last night's, it would be pretty normal for me to surface with +/- 500 psi in my hp 119, and him to have +/-1500 psi in his lp 95. But I came up with 1200 psi, and he had, uh....I forget, but 1000 or less, I think. That was a real eye opener for me. I must figure out what kept me so relaxed last night and duplicate it!

CaptnJack · Post by **CaptnJack** » Tue Nov 07, 2006 6:27 pm

You have an AI computer I take it?

He probably used more gas cause he was stressed out about constantly having to be responsible for yours!

Aquanautchuck · Post by **Aquanautchuck** » Tue Nov 07, 2006 6:57 pm

CaptnJack wrote:You have an AI computer I take it?

He probably used more gas cause he was stressed out about constantly having to be responsible for yours!

You got that right Capt. I sure know when I dive with a buddy. (you all know the type that hangs out above and behind you just where they should not) and am constintly checking on them my consumption goes up. Diving solo with my camera back way down.

CaptnJack hit the NAILER on the head.

Joshua Smith · Post by **Joshua Smith** » Tue Nov 07, 2006 8:16 pm

Lol- no, really- I don't have the exact profile, because my computer was back in the van, but it was something like 107 feet, 35 minutes, with a fair bit around 60-70 feet. I'll have to check, but there's no way I'd come back with 1200 psi on a normal dive, so it wasn't just buddy w/ crappy air consumption.

Sergeant Pepper · Post by **Sergeant Pepper** » Wed Nov 08, 2006 9:42 pm

Sub-conciously paying attention to your breathing because you knew you didn't have ready access to your guage, that, or maybe all your time in the water is morphing you into some ghastly aquatic creature. Soon, you wont need portable air at all, won't that be cool.

BASSMAN · Post by **BASSMAN** » Thu Nov 09, 2006 11:56 am

Gee? Who do we know on this board that dives LP 95's
that was a pretty big give away for me!

Joshua Smith · Post by **Joshua Smith** » Thu Nov 09, 2006 12:05 pm

BASSMAN wrote:Gee? Who do we know on this board that dives LP 95's
that was a pretty big give away for me!

I never said he or she was registered on the board! $\:D/$

BASSMAN · Post by **BASSMAN** » Thu Nov 09, 2006 1:20 pm

Tangfish · Post by **Tangfish** » Thu Nov 09, 2006 1:20 pm

The mysterious 'he' was diving an HP80 (minitank), not an LP95(bertha). But, your consumption was still impressive, or so he says.

peo · Post by **peo** » Thu Nov 09, 2006 3:59 pm

Nailer99 wrote:Lol- no, really- I don't have the exact profile, because my computer was back in the van, but it was something like 107 feet, 35 minutes, with a fair bit around 60-70 feet. I'll have to check, but there's no way I'd come back with 1200 psi on a normal dive, so it wasn't just buddy w/ crappy air consumption.

Curious minds wonder, so you did the dive to 107 feet without being able to see your SPG. Did you have a depth gauge, since your computer was left in the car?

CaptnJack · Post by **CaptnJack** » Thu Nov 09, 2006 4:11 pm

I thought it was air integrated with a dead battery. So I'd guess there was no gauge or visible spg.

DiverDown · Post by **DiverDown** » Thu Nov 09, 2006 4:54 pm

Hmmmm, Kinda sounds like a reckless way to dive Mr Nailer... I like it, A rebel!! $\:D/$ I suppose you will be posting on how you like to "solo" dive next??

On a serious note, The one thing that I have learned is to call a dive! Sometimes it sucks but Getting complacent is usually what kills seasoned scuba divers. You read all the time on the web about competent divers that die.. Food for thought..

Maverick · Post by **Maverick** » Thu Nov 09, 2006 5:32 pm

I dive an LP 95 and I was not there. but good for you naileer, be a rebel maybe next time you will dive the bouy line with me on a LP 72.

DiverDown · Post by **DiverDown** » Thu Nov 09, 2006 5:39 pm

If he was a real rebel?? He would do it on his 40..

" as the crowd chants" Nailer,nailer,nailer,nailer..

Maverick · Post by **Maverick** » Thu Nov 09, 2006 5:47 pm

and if he was a super rebel he wold do it with no fins or suit.

DiverDown · Post by **DiverDown** » Thu Nov 09, 2006 5:51 pm

No, if he was a real rebel?? He would do it in his THONG!!!!

Joshua Smith · Post by **Joshua Smith** » Thu Nov 09, 2006 6:13 pm

OK, I'll do it in a thong and pasties, but they have to be the sparkly pasties! And for my gas supply, I will take an upside down coffee cup, and sip air from it as needed.

DiverDown · Post by **DiverDown** » Thu Nov 09, 2006 6:16 pm

Where can I buy tickets???

Tangfish · Post by **Tangfish** » Thu Nov 09, 2006 8:37 pm

Definite youtube fodder.

Jstockn · Post by **Jstockn** » Wed Nov 29, 2006 2:28 pm

I Always dive with a SPG. I know it may be an extra hose but thats on thing your buddy's computer can not keep track of for you.