Using "pony bottle" sized SPG as backup for Wireless dive computer

[sytech]

I plan on getting a Suunto or Uwatec wireless wrist computer in the near future.

I think it's a good idea to have an analog backup SPG if the computer were to fail but I'd like to minimize the size of gear that I will be adding.

What's the opinion on something like this:

Pony Gauge With Hose reviews and discounts, H2Odyssey



Thanks,


Sy

 

[dkktsunami]

I plan on getting a Suunto or Uwatec wireless wrist computer in the near future.

I think it's a good idea to have an analog backup SPG if the computer were to fail but I'd like to minimize the size of gear that I will be adding.

What's the opinion on something like this:

Pony Gauge With Hose reviews and discounts, H2Odyssey

I don't see that you are minimizing much - a "brass and glass" SPG is only one inch larger. A better idea would be to use the SPG and leave off the transmitter. My experience with Suunto "wireless" was frustrating, to say the least, but the wrist computer is very good and I continue to use this with satisfaction.

 

[RJP]

I plan on getting a Suunto or Uwatec wireless wrist computer in the near future.

I think it's a good idea to have an analog backup SPG if the computer were to fail but I'd like to minimize the size of gear that I will be adding.

What's the opinion on something like this:

Pony Gauge With Hose reviews and discounts, H2Odyssey


Sy

This is 1" in diameter...

While this is 1.5" in diameter...

The downside to the one you're looking at is that, while properly clipped off the face is pointing down, away from your head and towards your feet, so you cant see it by glancing at it. (Not that you could actually read the minuscule markings on that gauge from that distance anyway.) So you'll need to unclip it and bring it up towards your face.

On the other hand, a standard 1.5" brass and glass SPG can usually be referred to simply by glancing down. Maybe you need to lay a hand on it to rotate it to face you, but you usually don't need to un-clip it.

Now, I'm guessing some would respond "But Ray, I'm only getting it as a backup to my computer. My primary goal is for it to be as streamline as possible since I'll probably never use it other than an emergency."

To which I'll simply offer the following:

1. I doubt your other streamlining efforts have gotten you to the point where the difference between a 1" vs a 1.5" gauge diameter is meaningful. (In fact that difference is meaningless regardless of any other streamlining efforts.)
2. If it's only going to be used in emergencies I'd suggest that being able to easily see it should be a higher consideration factor than small size.

Where in Central Jersey are you? Happy to get together if you want to check my rig out. I currently dive the setup you're looking at Vytec DS wireless with SPG back-up.

Shoot me a PM - Ray

 

[redacted]

If a wireless computer is so unreliable that you need a backup to dive safely, why go wireless? I have been disappointed with the reliability of pony gauges. A full sized gauge is about the same price and easier to use.

 

[RJP]

If a wireless computer is so unreliable that you need a backup to dive safely, why go wireless? I have been disappointed with the reliability of pony gauges. A full sized gauge is about the same price and easier to use.

I dive with an SPG as a backup to my wireless computer, not so much for "safety" as much as for convenience should the computer crap out (whether the wireless aspect or simply the battery-operated-device aspect) I can not only safely finish the dive I'm doing (I always have backup bottom-timer/depth device on my other wrist) but can still plan and execute subsequent dives.

Depending on the dive and gas supply I'll either use the computer as my primary source of gas status (single-tank vacation diving, double-tank OW recreational dives) or the SPG (any planned deco dive, wreck penetration, anything involving gas switching).

That said, on 300+ dives with this config I've never had my Vytec go squirrely.

 

[Chris12day]

I was laying my dad's ashes on a reef off Jupiter Florida when my dive computer failed. I had no analog backup. I had to rely on my brother's computer to verify my current depth, and dive time. I had no ability to determine my air supply. Unfortunately, I had to cut my dive short.

My computer for some reason lost its calibration! I had my computer re-calibrated and had the manufacturer install analog gauges.

I have two college age sons who also dive on the same model dive computers. When we purchased their gear, I had the same analog gauges installed.

"Prepare your self for the worst, and the best will be a pleasant surprise." Ben Franklin

 

[Brishar]

I'm in the "same church but a different pew." I have a Aeris elite backed up with a 2 inch hollis brass and glass. I do a lot of night dives and charging the glow of the analog with a dive light makes it, for me, readable for 10-12 minutes.

i went with a 2 inch because I can read it OK without my mask and I use the 1-1/2 for my deco or stage bottles.

Using the back light feature on a computer uses the battery up far quicker.

Also suggest using miflex hoses. I'm very happy with mine.