Advice from tech divers equip

[Rainer]

He's not going to be deco diving in SoCal wet. No way. Even in FL temps (70s) everyone doing substantial deco dives is diving dry.

Exactly.

 

[Rainer]

What would you want to attach to the edge of your plate?


Tobin

Argon bottle? SMB? There are a few things that one might want to add to the edge of the plate. That said, your BP has plenty of holes for that. You don't need 20 of them.

 

[xwhitesmokex]

Thanks for the brief info on P02. I'm actually taking the Nitrox in conjuction to O/W ... towards the end. I know i'm jumping ahead..but i tend to look ahead and make rational purchases based on planned goals.
I actually just read some info on the Suunto Viper2 which seems promising, but based on the guided info, i'm better of saving and only spending 300 on a nitek duo or plus and wait to get to anything else through the expertise of a tech instructor. if anything it will become a back up....

i was not planning on diving singles and doubles on the same wing.. it was the advice on my lds to go with a 50# deep outdoors wing for both.. and knew that it wasn't justifiable.. so after reading i looked at the oxycheq MACH V and since the 40# is on special .. i wanted to know if should get it based on my profile or spend the extra cash for the 30#.

 

[cool_hardware52]

Argon bottle? SMB? There are a few things that one might want to add to the edge of the plate. That said, your BP has plenty of holes for that. You don't need 20 of them.

Exactly.

Tobin

 

[cool_hardware52]

I actually just read some info on the Suunto Viper2 which seems promising, but based on the guided info, i'm better of saving and only spending 300 on a nitek duo or plus

If you are planning to continue into tech I'd recommend buying a Bottom Timer. Much cheaper than almost any computer. ScubaPro Digital Bottom timers can be had for ~$175, less if you shop a bit.

Tobin

 

[xwhitesmokex]

Tobin,
Does a bottom timer give you a recalc on deco time for multi-level diving?
or is it based on emphasis of a strict dive table or dive plan?

thanks again for your input.

 

[Rainer]

Tobin,
Does a bottom timer give you a recalc on deco time for multi-level diving?
or is it based on emphasis of a strict dive table or dive plan?

thanks again for your input.

'Search' is your friend. A BT is not a dive computer. It simply gives you depth and dive time. It's what most tech divers use. This was addressed in many of the earlier posts.

 

[PerroneFord]

Tobin,
Does a bottom timer give you a recalc on deco time for multi-level diving?
or is it based on emphasis of a strict dive table or dive plan?

thanks again for your input.

One of the things you'll find if you start to do technical, mixed gas diving, is that you will dive fairly strict plans.

Descend from surface to target 2 minutes
Dive at 200ft for 30 minutes
ascend to 150ft 2 minutes
dive at 150ft for 15 minutes
ascend to 70ft 3 minutes
switch to decompression mixture
stop at 70ft for 15 minutes
ascend to 20ft
stop at 20ft for 20 minutes
ascend to surface


While this is a bogus plan, it's similar to what you'd do for real. The trick in technical diving is to "hit your marks". You are not recalculating things on the fly. Your decompression plan requires that you stick to your plan. When the mess hits the fan, you will follow on of your contingency plans.

The tanks you carry, both in number and mixture in them, are specific to the plan you have laid out, and deviations from that plan could mean you no longer are carrying the mixtures or tanks you need to exit the water safely.

Because you are following a plan that is layed out days or weeks in advance, a dive computer than can recalculate on the fly is typically unnecessary. That said, they can be helpful for hugely varying profiles like we see in some caves. Caves are multiprofile by default. If you are diving to a wreck, you are going to the bottom, and generally doing a fairly square profile.

When I looked at some of my cave profiles, it was amazing to see the variance of depth. Often traveling up and down more than 50ft at a time for 1 - 1.5 hours. Trying to calculate that as a square profile is pretty hard.

Hopefully this information helps.

 

[xwhitesmokex]

great info Perrone... thanks for the visual clarification .. it took a bit but i finally see the light, thank you to you and everyone who responded.

 

[Mr. Sunday]

Thanks KGdiver, was wondering is there an advantage to using a 2 piece STA over a single 1 piece.
and i agree silva with the getting 2 of the same reg... and i was initially leaning towards the apeks. for costs, reputation, and proof of the DS4.

Thanks again for your taking the time to answer.

I dont think there is an advantage to a two piece over a one piece. At least not with mine. My STA is 4 lbs in a two piece design. If it were one I think it might be as much as my BP. I think that if anything the 1 piece may be a better choice due to the fact it would be bolted down on two points rather than one making it even more secure. I like my two piece but I would also like a one piece light weight STA as well for travel etc.....