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Computer decision - buy or don't buy

Discussion in 'New Divers and Those Considering Diving' started by Viper12161, Aug 20, 2019.

  1. Viper12161

    Viper12161 Angel Fish

    # of Dives: 0 - 24
    Location: Rhode Island
    62
    15
    8
    Do most computers allow you to reset the dive data as a new user? For instance, if I get a used Luna..I know it records longest dive, deepest dive etc....will I be able to reset all that from the previous owner?
     
  2. TMHeimer

    TMHeimer Divemaster

    # of Dives: 500 - 999
    Location: Dartmouth,NS,Canada(Eastern Passage-Atlantic)
    12,120
    2,612
    113
    Absolutely agree with everything here. Only thing I would add is that most of my "deep" (60+) dives are square profiles anyway, though I still take the DC along. A small point I always throw in that I have never heard an instructor mention -- the fact that when using tables and your max depth is 90', your average max depth is probably 87-88', unless your nose is literally in the sand. So there is that little bit of conservatism. With a DC, when it says you have 15 mins. bottom time remaining it MEANS 15 mins., not really 16 or 17.
     
  3. Billy Northrup

    Billy Northrup ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Key Largo / Norcal
    301
    129
    43
    At those depths you have an unlimited runtime. Your current computer is working for what you do so I vote to spend the money on more diving or a heated vest to keep you in the water. I’m a nerd and like cool stuff but resist the urge to blow money on stuff that doesn’t matter right now. If you must, buy used and the cheap ones are fine for the scope of your dives.

    That used predator above for 300 would be perfect imho
     
  4. GrafCanuck

    GrafCanuck Barracuda

    # of Dives: 25 - 49
    Location: London, Ontario
    235
    109
    43
    It was easy to reset my used Petrel 2. Don't know about the Luna. You should be able to google any manufacturer's site for their user guide and confirm the reset functionality.
     
  5. Viper12161

    Viper12161 Angel Fish

    # of Dives: 0 - 24
    Location: Rhode Island
    62
    15
    8
    I did check it out and there is a reset to factory option, however that is followed by an * transmitter binding, diver info and emergency information is not reset during this function. So not sure what exactly that includes.
     
  6. GrafCanuck

    GrafCanuck Barracuda

    # of Dives: 25 - 49
    Location: London, Ontario
    235
    109
    43
    You may want to send an email to ScubaPro and ask. When I bought my used Petrel 2 I had a few questions for Shearwater and they responded within 48 hours. Note that I'm a ScubaPro fan and own a SP bcd, regs and wetsuit. I've not had to connect with SP so I don't know what their level of service is like.

    Give ScubaBoard a little time, as there might be a Luna owner that can confirm the reset function.
     
  7. outofofficebrb

    outofofficebrb HARRO HUNNAYYY

    # of Dives: 200 - 499
    Location: San Francisco, California
    2,883
    2,186
    113
    It might also be worthwhile to start a new thread with that title in the subject line (resetting said model in question) to draw a bit more attention as someone who owns one might not be participating in this thread. The folks here are really helpful!
     
    GrafCanuck likes this.
  8. RIHappyDiver

    RIHappyDiver Barracuda

    # of Dives: 50 - 99
    Location: Rhode Island
    332
    188
    43
    Hi @Viper12161, fellow Rhode Islander here. Not sure if your class was with Kalipso or with Giant Stride, but something to consider is if you will be doing trips with them. I’ve been doing the winter trip with Kalipso the past 2 years (typically 50-90’) so only about 1/3 of my diving is in the relatively shallow areas here. That being said, I don’t do as many dives as some of the hard core (mainly single or married to divers) local divers. Main point is, if you are thinking about doing those trips, get a computer that will give you a close NDL to what most of the others who travel with them will be getting. As mentioned earlier by @scubadada and @rsingler, this comes down to algorithm. Check with Tim or Red, depending on where you took classes, they can give you a close idea. As an example, most of the Kalipso gang dive Scubapro of some type, I dive Oceanic. My NDL is close enough that that there has never been a problem. Flip side, someone last year was diving a Suunto and couldn’t stay down as long.

    However, if you’re just doing local diving I agree with the “dive what you have for now and do some research, then get what you want” camp.

    Erik
     
  9. rsingler

    rsingler Scuba Instructor, Tinkerer in Brass Staff Member ScubaBoard Sponsor

    # of Dives: 500 - 999
    Location: Napa, California
    3,321
    3,683
    113

    I have a little different take...
    I choose my algorithm based on my personal estimate of its safety and how I want to dive. If my NDL is consistently significantly less than my group by a few minutes, my buddy and I can end our dive a little earlier.
    I will only change to match others if I'm convinced I'm being too conservative. The older I get, the less I think that. What's a couple minutes each dive if you escape being bent? I've made it 30+ years that way, and I usually end up diving longer than the air hogs, anyway. If the aggressive folks get a few minutes more, good for them. Just not my risk/benefit choice.

    BTW, I've settled on Shearwater's ZHL-16C algorithm.
     
    outofofficebrb likes this.
  10. scubadada

    scubadada Diver Staff Member ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Philadelphia and Boynton Beach
    10,781
    6,211
    113
    If you don't mind, what GFs do you dive?
     

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