DiveRite Optima CM upgrades

[kensuf]

so that was you laying on the bottom of the pool at Blue Grotto?

No, I was the guy sitting in Orange Grove about 400' from the exit.

Wait, which thread is this again?

 

[addohm]

I logged a hair over 7 hours on ccr over the weekend at 3 different dive sites. I used 400 psi of DIL out of an AL 80 for the entire weekend.

Im not sure the relevance here. What's your max depth? Like 5 meters? lol

 

[rjack321]

You used 60+cf of dil in one 2.5 hour dive

The rest of us would be using about 12cf, or in Ken's case 2.5 x 4 = 10cf. 10-12, even 15cf being fairly normal, 60+cf is not normal. That's at least 4x normal. You should be able to do a 2.5 hr dive on 2x 3L dil/o2 tanks no problem. The offboard dil with the choptima is masking some pretty big issues if you're smoking through most of an 80 in dil.

 

[Tug]

This is what you’re looking for

 

[inquis]

Im not sure the relevance here. What's your max depth? Like 5 meters? lol

I'm guessing that you're somehow considering the timeframe for some reason, but the elapsed time is kinda moot for dil usage. You primarily use it when you descend, not if you stay level or ascend.

For your profile graph above, I see about 88 m of cumulative descent (0-40m, and 2x 17-41m). You used 410 L (37 bar out of an 11.1L cylinder). By comparison, I'd probably use about 160 liters for that. (FWIW, I average about 1.8 L per meter of descent.)

 

[addohm]

I'm guessing that you're somehow considering the timeframe for some reason, but the elapsed time is kinda moot for dil usage. You primarily use it when you descend, not if you stay level or ascend.

For your profile graph above, I see about 88 m of cumulative descent (0-40m, and 2x 17-41m). You used 410 L (37 bar out of an 11.1L cylinder). By comparison, I'd probably use about 160 liters for that. (FWIW, I average about 4.4 m of descent per bar out of a 7.8L cylinder.)

I think it's already been established several times that my dil consumption is too high

 

[inquis]

I think it's already been established several times that my dil consumption is too high

Yes, but you also somewhat ridiculed Ken, inferring an extremely shallow depth for his usage. I can only imagine you were confused by the timeframe, because that's natural for someone with a strong OC intuition which also backs you into a shallow depth rationale. I apologize if you already understand that the dive time is of little consequence in relation to Dil usage. That hasn't been obvious in any of your posts.

On a more practical note, your Dil usage in the graph seems to diminish during the constant depth portions (as it should). I wonder if you are simply running your counter lungs fuller than necessary?

 

[inquis]

@addohm, can you remind us whether you're running the wing, drysuit, both, or neither off your Dil bottle? (If everything is off the one bottle, that would explain a lot.)