Search results

  1. Jon Nellis

    Best Underwater Scooter

    No, those speeds are most likely without a diver behind it. The little plastic scooter on that list that stands out is the one that supposedly goes 4.35mph, which is 383 ft/min. Not even our Genesis SW, with over 110lbs of thrust, could tow a free diver that fast. Having been pulled around...
  2. Jon Nellis

    Introducing the SENTRY DPV DASHBOARD from Logic Dive Gear

    Thanks, although I'm likely not going to make the show due to a couple special projects with deadlines. I even passed on a paid trip to South Africa to help with a shark week film shoot. A provisional patent was filed a few months ago. There's no stopwatch, only a run timer. I went with...
  3. Jon Nellis

    Introducing the SENTRY DPV DASHBOARD from Logic Dive Gear

    The beta test units are already spoken for. The first small production run will be offered to Genesis owners, and if any remain they will be available for other scooters once we confirm that they are compatible with each scooter.
  4. Jon Nellis

    Introducing the SENTRY DPV DASHBOARD from Logic Dive Gear

    We are in the process of testing it on other scooters. You'll need to wait a few month both for scooter and Dashboard. In addition to this development, I have a couple custom projects for reversible scooters for thrusters on two different subs. No plans for an integrated compass, since I'm...
  5. Jon Nellis

    Tesla home battery pack and DPV battery pack Technology

    Ya mean like this... http://www.scubaboard.com/forums/dive-propulsion-vehicles/506771-introducing-sentry-dpv-dashboard-logic-dive-gear.html
  6. Jon Nellis

    Introducing the SENTRY DPV DASHBOARD from Logic Dive Gear

    In response to a couple recent forum threads, we are releasing the first pictures of the Sentry DPV Dashboard. The first ever power management computer display for DPVs. The Sentry DPV Dashboard uses a wireless transmitter inside the scooter to send battery and power information to an OLED...
  7. Jon Nellis

    DPV How much thrust or speed is needed

    If you are looking at the top speed/max thrust of scooters to make your decision, you need to realize that it is the least efficient speed/power level to run at. They are essentially no different that a car in that regard, while a car may be able to go 100mph, the gas mileage is going to suck...
  8. Jon Nellis

    Prop torque

    No, the torque generated by a DPV is basically related to thrust and propeller efficiency. The faster you go or the less efficient your propeller is, the more torque you will experience. No, light scooters are more susceptible to minor directional control inputs than heavier scooters simply...
  9. Jon Nellis

    The next generation in DPV technology - Logic Dive Gear Genesis 600/1240

    Yes, the tails are the same between the 600, 1200 and 1500. To change between them, you can get the different length bodies and larger batteries. However, the 1200 batteries are not simply two sets of 600 batteries. Cheers, Jon
  10. Jon Nellis

    DPVs are they all that?

    Try this old thread... http://www.scubaboard.com/forums/dive-propulsion-vehicles/468676-dpv-comparison-demystified.html
  11. Jon Nellis

    Best lithium battery chemistry for a DPV?

    To simplify what Tobin said... In a scooter at normal cruise power, the 25Ah LiFe will yield similar runtimes to a 40Ah SLA, because you will not actually get 40Ah out of the SLA battery at higher current loads. The electro-chemical conversion efficiency of SLA decreases significantly as the...
  12. Jon Nellis

    Dive-Xtra Piranha

    Not exactly true. There is a special exemption that allows up to two 300Wh batteries, even with the new regulations. It is up to the individual airlines as to whether or not they will accept them and we are in the process of working with USDOT and various airlines for approval. We will post...
  13. Jon Nellis

    Runaway Scooters - Throw-behind/Throwback

    I'll make you a deal Ken, I'll stop your prop with my hand if you TRY to stop my prop with your hand. Just so you know, I dive a Genesis SW that requires about 4 time the torque as a standard clutch, to slip the mag coupling. ...and let me get the camera first. Deal? As for providing...
  14. Jon Nellis

    Runaway Scooters - Throw-behind/Throwback

    I know that some scooters can be stopped with a hand on the BACK of the prop, but as a manufacturer in the sue happy US, I can't recommend that. Many of the older scooters that use a clutch only have about 0.25HP to 0.35HP and use blades that snap off at the hub. The Genesis is 1.25HP and...
  15. Jon Nellis

    Runaway Scooters - Throw-behind/Throwback

    It really depends on the scooter, but I don't recommend sticking your hand in any rotating prop. If a blade were to break before it stopped, you now have a spinning jagged edge contacting you hand. To stop a spinning prop, I recommend feeding something into the inlet that will stop the prop...
  16. Jon Nellis

    Use of DPV while carrying big U/W Still Camera setup

    Both the large and small swivel mounts are available. We just added a larger quick release for full size DSLR and video housings that is not in the video below. Email or PM me for prices. LogicDiveGear - YouTube
  17. Jon Nellis

    Use of DPV while carrying big U/W Still Camera setup

    If you have a really large DSLR setup, it is often easier to just mount it on the scooter. It also gives you the option to shoot video and when you need to snap off a quick picture before the subject swims off, you can just stop the scooter, grab the camera with the scooter still attached...
  18. Jon Nellis

    Scooter Diving with Sea Lions Video

    I check the my 600s in the soft cases we make and add my wetsuit, boots and other gear to the bag to hit 50lbs. The batteries get hand carried on the plane and there's no extra baggage charges. Our prop and nozzle aren't as fragile as the thin plastic Oceanic nozzles, so a soft case works just...
  19. Jon Nellis

    Scooter Diving with Sea Lions Video

    The 600 was not tested as "tech" because they ran out if time and the thrust and speed are basically the same as the 1200. I dive a 600 with doubles or side mount and a stage when I take it on cave diving trips to Florida. The Genesis 600 has more range than other scooters with 650Wh to 900Wh...
Back
Top Bottom