Redundant Dive Computer

[BikerBecca]

The pilot in me loves redundancy. I always dive with two computers. I own more, but I always have two on the dive.
Currently I dive with a Suunto D5 with a POD and a Suunto Zoop with an analog SPG.I like having the same brand when diving. Suunto for recreational. Shearwater for technical.

 

[Manatee Diver]

Suunto for recreational. Shearwater for technical.

Why not use the Shearwater for both? There is nothing that my Suunto could do that my Shearwater couldn't, and it does a number of things better.

 

[BikerBecca]

Why not use the Shearwater for both? There is nothing that my Suunto could do that my Shearwater couldn't, and it does a number of things better.

It was just a matter of when I bought stuff during my diving career.

 

[KentB]

I used to use a perdix AI and a Geo 2
then I decided Id rather have 2 computers the same and it makes gas switches easier ect, I found a perdix non AI for a pretty good price with 37 dives on it so I grabbed that at sold the Geo 2.
2 computers and same algorithm gets my vote. easy to use, both the same, same numbers just makes the most sense to me.

 

[Fishyhead]

For me, redundant systems means having computers that mirror one another.

I dive with an Suunto Cobra (air integrated) and Vyper on the (wrist) and carry a spare SPG on a Suunto QD in case the Cobra dies.

I set them up the same way and the data I download from them is nearly an exact match. This means if one dies on a trip, I can continue diving with one and continue with the same system.

 

[Joebar]

Two Petrels, same GF
No main. If Reef is on left side, I watch Petrel on the left wrist. If Reef is on right side I watch right Petrel

Combo Petrel / Aladin Air O2 worked until the first dive with gas change

 

[grtday]

2 ScubaPro G2's. One wireless and one hosed. They nearly mirror one another. I like having 2 of the same brand and model. One less owners manual to absorb too!

 

[Diving Dubai]

Why not use the Shearwater for both? There is nothing that my Suunto could do that my Shearwater couldn't, and it does a number of things better.

I would strongly disagree with that statement.

I use a Suunto Eon Steel as my primary and a Perdix AI as my backup. For Rec and non trimix baby Tec (sub 200ft) diving, the Perdix set at 45/95 is the most conservative of the two and will give you more stops to the surface. (Generally these ares sub 1 min stops so they could be "ignored" to follow the Suunto )

The Suunto prefers shallower stops and gets you out of the water sooner

I do like the Surf GF on the Shearwater, and I know if it turns to cr@p the shearwater will support my mental calcs to get me out of the water, whereas the Suunto would lock me up if I blew through my stops.

All of the above is based on 200 dives using them both together (the Eon having an additional 600 dives on it)

I personally don't feel it's an issue using different algorithms as long as you understand both computers. I have "ran mine" on DM5 and Multi deco planners and compared the outputs, I also Understand from actual experience how each one will react under water to real world diving

I wouldn't say either computer is "better" than the other - the Eon for me just less things I don't like and works much better as the primary information source

 

[Manatee Diver]

I would strongly disagree with that statement.

I was comparing them to the recreational computers like my Cobra 3 and the Zoop Novo.

I use a Suunto Eon Steel as my primary and a Perdix AI as my backup. For Rec and non trimix baby Tec (sub 200ft) diving, the Perdix set at 45/95 is the most conservative of the two and will give you more stops to the surface. (Generally these ares sub 1 min stops so they could be "ignored" to follow the Suunto )

Turn up your GF Lo, that will eliminate many of those shallower stops.

 

[KenGordon]

Turn up your GF Lo, that will eliminate many of those shallower stops.

Can you do that now? I could not set GF low higher than 49 with GF high above 90 last time I tried.