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  1. Jon Nellis

    DPV research

    Yes, The Warp Core layers are UN38.3 tested in both configurations (4P2S & 8P1S) which is why they can legally fly on passenger aircraft and be shipped without full Class 9 Dangerous Goods declarations with the batteries inside the DPV, when the layers are electrically disconnected. Even the...
  2. Jon Nellis

    Logic Sentry DPV dashboard on BlackTip?

    The Sentry can sense the individual voltage of two batteries connected in series, up to 50V per battery and 100V total. That is why there is a V1 and V2 on the display. The original Genesis used two batteries in series and the Sentry was design around that and the fact that older lead acid DPVs...
  3. Jon Nellis

    Genesis DPV - New motor / price increase?

    Hi Brian, As rjack321 guessed, we have run out of the old motors, and after 10 years, decided it was time for something even more efficient, quieter and made in the USA, with a new motor controller to drive it. Unfortunately, we didn't plan on the supply issues when we started the project...
  4. Jon Nellis

    Beach diving with a scooter in the Caribbean

    I have yet to hear of anyplace in the Caribbean that you can not use a DPV. Bonaire is great, if you dive the East side from the fish huts at Lac. The channel can be ripping on the way back in and you may not have enough power, and have to pick your way through the reef. There's a deep sand...
  5. Jon Nellis

    New Genesis 2.0

    You'll want to take most of that lead out for fresh water. Simple math check is that seawater is about 2.5% more dense than freshwater. DPV and compass is about 34lbs, so 34 x .025 = 0.85lbs that needs to come out. Cheers, Jon
  6. Jon Nellis

    New Genesis 2.0

    Reduced power mode kicks in when battery voltage hits 57.5V (+/-0.5V) For reference, peak voltage is 74V and shut off is 50V. Running at full throttle causes more voltage sag from the battery under load than running at cruise power and as the battery approaches the voltage "knee" of the...
  7. Jon Nellis

    New Genesis 2.0

    You win a cookie. @Texasguy :That's the first I've heard of the Sentry turning OFF while being used, considering it takes 6 properly timed taps to turn it OFF. If you are making a lot of jerky left and right movements on the handle, or have the DPV clipped of next to you and beating up...
  8. Jon Nellis

    New Genesis 2.0

    Do not use any silicone lube with plasticizers (that rules out a lot of them) They are bad for the nose connector. It should say NSF 51 and NSF 61 (i.e. Food Safe) .
  9. Jon Nellis

    New Genesis 2.0

    #1 They will not rub through the hard anodizing. #2 You are the first to mention that, but feel free to round the corners off if it feels better. The lever resistance will decrease a bit after a few dives. #3 The motor controller pulls about 3 watts of quiescent power when the motor is not...
  10. Jon Nellis

    New Genesis 2.0

    Listing motor efficiency is pointless, as it is not uniform throughout the RPM range and does not tell you anything about the total system efficiency. It's hand waving, so you don't look at the relevant performance. A high efficiency motor spinning a low efficiency propeller through a high...
  11. Jon Nellis

    New Genesis 2.0

    By "earliest opportunity" we mean, don't go home and leave it in the garage for a month without putting some charge back into it for storage. If you were to run it at continuous full or nearly full power for an entire dive until it cut out (highly unlikely, but some have done it) you would want...
  12. Jon Nellis

    New Genesis 2.0

    Kydex is actually a lot "harder" on a Shore scale. The reason the clear tubing is so difficult to damage, is that its notch sensitivity is extremely low, but you'd have to have an advanced understanding of polymer failure modes to know how that works. .
  13. Jon Nellis

    New Genesis 2.0

    No, we do not use cheap vinyl tubing from Home Depot. The clear tubing we use, I've used on inspection ROVs with 1atm internal down to 1400' and 3 ton work class ROVs beyond 6000 meters deep, when pressure compensated. I'm not the least bit worried about it. Just to cut it, we have to use a...
  14. Jon Nellis

    New Genesis 2.0

    Could you explain how you envision that someone might "snag" a DPV tube, such that it overcomes the hundreds, if not thousands, of pounds of force pushing the body onto the tail? .
  15. Jon Nellis

    New Genesis 2.0

    A little water in the tube section is not a problem, a lot would short circuit the battery and work its way into the motor section. The Genesis has never had a problem with leaking; that's the point of external recharge. You do a good job cleaning the seals and assembling in a clean...
  16. Jon Nellis

    New Genesis 2.0

    The tube is clear so that if moisture/humidity gets in the motor section, you can see it condense on the inside of the clear tube and get it fixed, hopefully before it causes any damage. The nose carry strap if simply functional. With the charge connector and vent port on the nose, there's no...
  17. Jon Nellis

    New Genesis 2.0

    The Compass and magnetic shield are the only options not shown on the website. Yeah, I'm overdue a website refresh.
  18. Jon Nellis

    New Genesis 2.0

    If you had your compass right next to the Sentry, the battery in the Sentry is most likely the problem. Move your compass forward. I usually run it close to the nose.
  19. Jon Nellis

    Genesis 2.2 vs Seacraft vs Magnus

    It's more like crack addiction. Take one for a test drive, the first hits free! :D
  20. Jon Nellis

    Genesis 2.2 vs Seacraft vs Magnus

    The Genesis 1.0 had different controller enable electronics that were designed to disable the DPV if the plug cover was removed in water, but in reality, seawater was conductive enough for the controller to remain enabled, but not fresh water. Since no one has had a runaway DPV, the decision...
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