Sidemount - SPG and Transmitter - HP Splitter? Button SPG?
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Underwater Tourist
Contributor
On a serious note, here are some threads for you, but bottom line is that there is nothing special about SM, choose one (spg or ai) and go with it.
The curious case of AI. Do you use a back up SPG while using AI?
Hi ! So in the past 4 years I've I started to come out of the "old ways" and try new gear and it has been paying off. Now it's the air pressure's turn and I was wondering what divers, especially technical, think in general about the new Air Integration Technology (AI). I know it's not treally...
Spg, AI, both
Had a discussion with my instructor wether AI alone is safe enough or not I believe they are enough in them self he believes you have to have a spg and a transmitter. Got my curious what a peoples preference and why
Spg backup to transmitter
backup spg to transmitter Hey just to sum it up i am a pretty experienced diver And i am just starting to dive sidemount and i have ordered the perdix 2 and 2 swift transmitters but i was thinking about if i could swap the spg with the transmitter that way i don't have a annoying bulge in my...
SPG with AI computer?
So I recently picked up a like-new Oceanic Atom 3.1 and transmitter, which looks like they've never even been used. Tested the air integration out on a tank at my local dive shop, and it seems to work fine. My wife and I will be further checking out all our scuba equipment in their pool prior...
AI and Transmitters, our two cents on Air Integration in cave diving. - ProTec Dive Centers | Cave Diving Playa del Carmen & Tulum, Mexico
Technology, techniques and trends… they all evolve, some are quickly forgotten, some are here to stay. One of our followers sent Tamara a request for a series of IG stories where our team would talk about the use of transmitters in technical cave diving. What seemed like a simple and easy idea...
protecdivecenters.com
if you go with spgs, I personally found the usual way of checking gas in SM annoying (I am a minority when it comes to that, most people dont really care) and I made all my spgs stage style (here is a pic for you if you are not familiar with it). Just something to play around with for you
if you want to go into caves, you might want to take sm course from a cave instructor so your gear will be streamlined to begin with and you won't have to make any modifications down the road. I would also caution against taking advice from people whose sm rig looks like that (no offence to anybody):
H valve baby
stretchthepenn
Contributor
?
I use both an SPG and a transmitter.
My final solution for a while now is to use a hp splitter in one of the HP ports of the first stage.
Since the splitter (apeks) can turn quite easily you do not want to out any hose to the turning port because otherwise it would turn (what a surprise) and with the hose it would stick out downwards, you definietly dont want that.
But if you just put your transmitter into that moveable port it would save from from anybody’s attempt to grab it. (Because its movement made in basically impossible to grab it and lift up the tank with it.)
On the straight going port I put a short (6”) hose with the SPG on it, so I can easily look at it if ever needed, exactly the same way if there was an SPG only.
This way you have 2 redundant system (I don’t say you NEED this, I’m perfectly fine if somebody says it unneccessary.), it is quite streamlined, no snagging hazard. If I wouldnt find this working solution, I would have dropped the SPGs altogether.
My final solution for a while now is to use a hp splitter in one of the HP ports of the first stage.
Since the splitter (apeks) can turn quite easily you do not want to out any hose to the turning port because otherwise it would turn (what a surprise) and with the hose it would stick out downwards, you definietly dont want that.
But if you just put your transmitter into that moveable port it would save from from anybody’s attempt to grab it. (Because its movement made in basically impossible to grab it and lift up the tank with it.)
On the straight going port I put a short (6”) hose with the SPG on it, so I can easily look at it if ever needed, exactly the same way if there was an SPG only.
This way you have 2 redundant system (I don’t say you NEED this, I’m perfectly fine if somebody says it unneccessary.), it is quite streamlined, no snagging hazard. If I wouldnt find this working solution, I would have dropped the SPGs altogether.
girlwithbigtanks
Contributor
Pick one. If one transmitter goes poopy and IF you have been balancing your tanks you have a pretty good idea what’s in it Switch to working one. Breathe for a set time. Then breathe the dead transmitter side same amount of time. Chances are you’ll finish the dive with balanced gas volumes. You know how much you have when they failed. ****If your dive is a *planned *dive its a minor annoyance.
I would keep diving a rec dive* on plan with 1 dead transmitter. Call it for a tech/cave dive. Any failed gear. (*assuming you planned your dive)
Not worth making my regs more complicated. Dive tomorrow.
I would keep diving a rec dive* on plan with 1 dead transmitter. Call it for a tech/cave dive. Any failed gear. (*assuming you planned your dive)
Not worth making my regs more complicated. Dive tomorrow.
I finally found out what the z-system is good for. . .
But seriously, I'm with @girlwithbigtanks. Just pick one. I prefer transmitters. I've had a transmitter fail in a cave, it's a non-issue as long as you're keeping your tanks balanced.
When my transmitter quit, I knew my gas level within 200 psi, and I made gas switches based on the time during my exit. Your spg/transmitter should be a tool that confirms what you think your gas consumption should be. That's why you should have learned to calculate your SCR/SAC/RMV in your course.
In a cave, you're (hopefully) going to be diving thirds. So theoretically, you should be able to do an exit on one tank, at any point in the dive.
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