Computer Dilemma

newman_diver

Hi Everyone,

Now I know most of you have heard the question "Which computer?" several times before but I am going to ask it again, as specific as possible so I can get the best input to help me with my decision.

I am looking at 2 computers: Liquivision X1 and Shearwater Pursuit. I know the main differences between the two (Pursuit - pre-programmed tables, X1 - user inputed tables) and the display differences.

I currently dive OC but am in the works of saving up for a Meg. I want a computer that does both OC/CC and can handle Air/Nitrox/Trimix. I want something fairly easy to use and durable.

I would appreciate any constructive input into this choice and want to avoid bickering/slamming. I really enjoy this forum and it provides me with invaluable information into Rebreather diving.

Tyler

Hanssing

Thar very rearely happens here, and we all try to avoid it to some degree. Fear Not


As I have not dived both, I cannot tell you wich is best display-wise, but IMHO the most readable display is currently the X1. However the Pursuit has a light-sensing function that automatically adjust the backlight, so in essence I would think both are 'good enough', meaning better than the rest!

I had to decide wich one, and the pursiut for a rEvo would be the obvious choice. However I really like the V-planner program, and the deco-profiles generated so when I was in doubt the algorithm decided for me.

The Pursuit uses Gradient-Facotors and its predessesor have been dived to cosiderable depths so it has a proven track-record. The 'V-Planner Live' has currently not a big track-record.......

The X1 has some things against it: You need to charge it, and if possible leave it in the charger to exstend battery-life. You also need to have the charger active in order for the USB-download to work. The charger and possible future sensors are attached by two small screws in an aluminum casing, and I worry that the will not last 1000's dives screwing and unscrewing....
Other than that the X1 is a SWEET piece of gear

The UW menues are good, and if VPM-deco is not your thing GAP will at some point be available (RGBM-model and GF-model).

BTW: Both computers will let you do OC Trimx and CCR-Trimix.

Regards
Nicolai

__________________
Woohooo - I can change my rEvo!
Its going to be bitchin' tricked out piece of gear

Art Greenberg

That isn't quite correct. Both are preprogrammed.

The X1 does allow you to choose between two decompression algorithms, Buhlmann with gradient factors or VPM. You must purchase and load the algorithm implementation separately from buying the computer. And at the moment, while the X1 will do closed circuit, it doesn't have a means to connect to oxygen sensors, so it cannot actually monitor the ppO2 in the loop. That is, I have heard, a planned addition to the computer.

For the Pursuit, only Buhlmann with gradient factors is available at this time. But the software in the Pursuit is also changeable in the field, and I've heard that a VPM implementation for it is in the works. The Pursuit does currently support connection to oxygen sensors (up to 3) for ppO2 monitoring.

--
Art

silentscuba

The Shearwater is a proven design, is easy to read, easy to run and the software can be upgraded over the internet.

When in CCR mode with external PO2 monitoring it can read 1 or 3 cells. The battery lasts very long and is easy to change. The unit is very rugged and reliable.

You can also purchase the Shearwater as a basic OC Nitrox computer for $1,195 and then upgrade it to OC Trimix for $200, CCR for another $200 and then external PO2 monitoring for another $200.

The computer can grow with you and you don't have to pay out all your money at once.

The Shearwater Pursuit is rock solid and a good investment, I own 2 of them and am using them integrated with my rEvo and Kiss Classic.

__________________
Curt McNamee
rEvo CCR Diver
KISS CCR Diver
www.silentscuba.com

scubagrunt

Hi Tyler the SW plugs into the copis meg very easily, not sure if you are looking for a copis or apecs meg. If you are in Victoria BC, you may be interested in attending the CCR expereince in north seattle on June 29th
Silent Scuba
most of the CCR's will be there and the SW will be there too for you to look at.
mel

__________________
"No good deed goes unpunished!"
www.silentscuba.com

Darkwater

Any reason you are not including the VR3 in the list?
I have been diving one since they first came out, (the old brick) and other than a few battery issues early on, have found them to be very reliable despite the abuse I put them through.
Its probably the most proven system available on the market today and has been used on many of the extreme dives. I know some consider it conservative, but it has not bent me yet and personally I don't mind the few extra minutes (- use the extra money and buy an underwater mp3 player!).
Also the colour screen is superb.

kevin stone

The best solution is to buy both
The Shearwater will tie into the loop and the X1 to be your redundant computer, then you get the best of both worlds.
See its easy
especially if its not my money.

cramerdn

Definately the best tech computer on the market 5 years ago. Of course it was the only one then.

Another bonus of the VR3 is that there are lots of used ones for sale.

__________________
"Its better to live one day as a tiger than an entire life as a worm."

"But who's ever heard of a worm skin rug?"

aknelson

Guess some of the new computers are offering more information at the time needed
Compared with the Uwatec a need to get into the next step showing the correct information at the right time without pressing keys.

Andreas

Buck-O-Five

The liquivision does look nice but after reading about the X1 battery replacement, I never thought about buying one. http://www.rebreatherworld.com/rebre...cy-wacked.html

After much research I decided on the Shearwater Pursuit with HUD. It truly seems the way that mCCR is heading for monitor and hopefully controller for me. If you need a back-up computer I use a Cochran EMC-20h but am thinking about getting another Pursuit or an maybe an older GF.