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  1. Jon Nellis

    Question Fathom Dive Systems has their own version of a Genesis Warp Core?

    No piece of technical equipment is completely immune to "user inattention" (...I'm being nice) and having the equipment "professionally serviced" is no guarantee either. The only time's I've had regulator problems is either brand new out of the box or after having them "professionally serviced,"...
  2. Jon Nellis

    Genesis Magnetization

    "Console" is an ambiguous term. What is your "console" and what else is on it? If you have a computer or something else that requires a battery, the cell is likely the next major contributor. How much deflection is occurring?
  3. Jon Nellis

    Genesis Magnetization

    It is most likely the clock spring in your retractor that has become magnetized. If you removed the prop (say when rinsing) and held it next to the retractor, that could magnetize it. But when installed, the magnetic coupling's magnetic fields are closed loops and don't extend beyond the...
  4. Jon Nellis

    Subgravity vs. Genesis dpv?

    Check out Home | Kuleana Coral Reefs They have a few Genesis DPVs and could be a useful resource for other info as well. .
  5. Jon Nellis

    Question Understanding battery pack math

    Don't try out-thinking the battery, especially with limited understanding. 1. Charge it FULLY before diving, you never know what you might need. (Do you only fill your breathing gas to 80% if you don't plan on using it all?) 2. If it is much below 62V at the end of diving AND you are not...
  6. Jon Nellis

    Question Understanding battery pack math

    Here's an actual discharge curve at continuous full power. That's how we test every DPV before shipping. 4V of sag from full charge, low power reduction kicks in at the voltage knee, voltage recovers 1.5V after power reduction, then recovers 2V more when shut off. Discharge is fairly linear...
  7. Jon Nellis

    Question Understanding battery pack math

    The Warp Core BMS has Battery Capacity and Cycle Capacity parameter values. 26000mah/24000mah for the 1700Wh pack and 13000/12000 for the 850Wh pack. The % remaining is based on the Cycle Capacity value, not full battery value and are ESTIMATES, since there is no way to factor capacity loss of...
  8. Jon Nellis

    DPV rigging

    The tow cord is just one small part of a mechanical force vector system, that includes your hand, arm, back, fins, boltsnap and DPV. Where the tow cord attaches to the DPV is also relevant. Most are attached near the plane of thrust and symmetrical across the axis of thrust. Mounting the tow...
  9. Jon Nellis

    Genesis duct foam

    The nozzles are structural urethane foam, there is no epoxy or fiberglass. Early nozzles were not painted, but they would lighten in color with age and UV exposure. They have been painted since around 2016. They can be refinished with normal primer and paint. If you want to get fancy...
  10. Jon Nellis

    Oh crap! I screwed up. Thank you Logic/Genesis DPV and Jon Nellis

    We ship via UPS and FedEX worldwide (mostly). EU has high VAT and excise duties on imports, so we also get customers that fly to the US for a dive holiday and return with a Genesis in their personal baggage. They are easy to fly with. Cheers, Jon
  11. Jon Nellis

    Genesis 3.1 DPV

    De rien cosmosaure. We've had numerous European dealers contact us, but the shipping and import duties over there seem to always dissuade them, so no. Most Genesis owners in the EU come over here on vacation and fly back with it in their luggage, since they are so easy to fly with. .
  12. Jon Nellis

    Genesis 3.1 DPV

    At normal speed, they are both pretty quiet, as they are only using around 160W, but at full power, the 3.1 is significantly quieter due to the new motor controller using sinusoidal switching, instead of the previous trapezoidal switching. Additionally, the switching frequency of the new...
  13. Jon Nellis

    Toroidal propellers

    There are propellers for speed and propellers for thrust. Toroidal props, like most open boat props. are made for speed. Ducted props are used for higher thrust at lower speeds, with the efficiency difference based on how well and for what speed the duct and prop are designed. As speed...
  14. Jon Nellis

    New Genesis 2.0

    Any assembly that goes in the water can leak, which is why we have a test port. Vacuum tests are mostly useless, since they may (or may not) tell you there's a leak, but not where it is, so you can fix it. If you suspect you have a leak, 3-5 psi of air pressure in the DPV submerged in water...
  15. Jon Nellis

    New Genesis DPV Ship Date?

    We will start shipping next week! I can't tell from you screen name if you ordered direct or through a dealer, but the weight of that light big of a light and whatever is needed to mount it are likely going to exceed the amount of buoyancy available at the nose of the 3.2. We could build it...
  16. Jon Nellis

    New Genesis DPV Ship Date?

    We just received the new motors and the new motor controllers are due in a couple weeks. We need to do some testing and firmware tweaking before shipping, but I estimate that we'll start shipping the new 3.1 and 3.2 in August. We have a long list of folks that have been waiting since last...
  17. Jon Nellis

    DPV research

    http://logicdivegear.com/wp-content/uploads/2020/06/Warp-Core-Manual-R1.0.pdf .
  18. 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...
  19. 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...
  20. 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...
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