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Everything posted by WI_Hedgehog

  1. The older 14D models used a fuse like @Scottie888says, the newer ones came with a spare fuse they did not use as it was eliminated from the circuit--fuses eventually blow causing cutout, so they turned out to not be a good idea. If you're running a single battery pack make sure it is still putting out voltage, and consider upgrading to dual packs for redundancy which will make your wheel much safer. If you are running dual packs check both. There is a fault wire coming from the battery packs that can shut down both packs in the event of failure, detailed in other threads. Check
  2. Technically, charging a warm battery is harder on it than charging at room temperature. "Fast charging" internally heats the battery, and while it can usually dissipate the heat it does cause some additional stress (hence "fast charging" beyond mfg spec). Cells are much more sensitive to charging stress than discharging stress. Like @ShanesPlanet says, what's more important though? @Rywokastis extending his battery life, the guys @Tawpiemention need the range. Most people replace their wheels (with faster and farther range models) before they wear out, so no biggie. If you're trying
  3. Drink & Selfie Stick in the same hand... Also simultaneously riding and flying a camera platform... Sheesh. That "no protective gear" thing would bite me like 30 seconds in, just long enough to get the video rolling...kind of like when someone wants some sort of skills demonstration...like @Kuji Rolls demonstrating basic riding for that dancer and...it's all cued up for you, just press Play.
  4. The liability risk is so high due to the difficulty of product usage the category might change from Consumer to Extreme Risk. (As an example I look at how many experienced people here have crashed and had major surgery despite being experienced, cautious, and wearing protective gear.) Marketing a product where injury is expected walks right into the Exclusions clause, so....no coverage. That's speculation, so don't put too much weight on it. To address one of @houseofjob's comments, I don't speak Mandarin nor live in China, but do enough business with Chinese companies to know many of the
  5. No, no, that doesn't happen... Oops, it happened again... Brian has quite a few advantages: High-voltage circuits should follow IEEE, CE, RoHS, ISO, ASTM, and CCC standards, which some Gotway boards clearly did not (spacing requirements in particular, referencing @Tawpie's post). Spacing, board material type and thickness, copper trace thickness, layer topology, and solder-blob avoidance also come into play (Gotway blobs... ). In theory Brian has a strong advantage regarding circuit design (we're pretty good at it). Brian's design seems to avoid patent (now owned by Gotw
  6. For the Segway/Ninebot miniPro both the Segway-Ninebot and NineBattery apps show individual cell voltages for both packs.
  7. Change the App Display Mode from Windowed (compatibility) to Full Screen: +Hold the bottom button to get to the Power_Off/Reboot screen. +Tap the top circle so it goes from having a square inside the circle to a full circle (the change is immediate, but you won't see it on that screen). +Press Cancel to return to running apps (the setting is saved). Apps now take up the full screen.
  8. Check the battery voltage while riding. Older cells have less power capacity and can cause tiltback sooner. Maybe you have a dying cell? Monitor cell voltages.
  9. I think you're making my point for me... LOL There are other considerations with induced current and different voltages/frequencies (noise, harmonics), voltage spikes, feedback, environmental conditions, heat dissipation, etc.
  10. There are Bluetooth hearing aids, they connect to phones to take phone calls, play music[, and provide EUCWorld updates].
  11. Circuit boards beyond 48V are increasingly difficult to make, 84V is probably a realistic goal. The US is great at using Open Source code, maybe he figured it out. Making the parts for it though, that's a tough one. I can't see a US company getting liability insurance for making wheels, this will most likely be a near impossible hurdle, affording it would be the next.
  12. Wireless earbuds. TaoTronics makes some decent ones.
  13. If an electric rental scooter that does 12 MPH is "too dangerous" for people to operate, good luck with an EUC...
  14. Excellent post! We can easily monitor individual cells & know when a pack is going bad, and discharge it fully on a computerized charger designed to do so (with temperature monitoring/alert/shutdown), in a fire-retardant bag, within hours-not weeks-the dendritic growths don't have time to puncture the insulator. We also run 8S1P easily removable packs & chain them to get 16S..., so far fewer cells/lower risk right out of the box. (And some of us hook monitors to the balance wires while flying and are alerted if any cell starts to act up.) I'd get a steel box,
  15. This forum is no end of entertainment: "I have a NON-UL Listed device packed with self-fueling lithium cells (from China), almost no safety features, and I swapped out the factory charger for one with over three times the current output. Do you think my insurance company will pay out in the event of a fire?" Bloody ell. If you live in an apartment you're going to get sued blind by anyone who even thinks they got lithium poisoning. The water damage from trying to keep the building from burning down plus paying for other tenants to stay at a hotel during the 9-18 months of repairs is g
  16. Get a smart watch like @ShanesPlanet, or that $50 wireless display I was talking about (a cheap smart phone). Like motocross, wheeling isn't a sport for $1,000 iPhones.
  17. EUCWorld beeps when it loses connection with the wheel, so no issue on not getting over speed alarms. The phone & headset should beep if a battery is dying, no issue there. Vibrations screw up the accelerometer inputs, DON'T add a vibrator to the wheel unless you want the software to guess at what's happening, and this is a condition which it's not designed to handle. Put the vibrator on your body/wrist/helmet, or get a smart watch like @ShanesPlanet.
  18. When buying a $1,000+ wheel, adding an optional color wireless display that plays music, has GPS, Bluetooth, WiFi networking, and messaging for $50 is awesome, even if it's a bit clunky on the interface (which you can change). Saves from smashing a new $1,000+ phone in a fall. Even on $2,000 wheels you can use the same display. The amount of stuff it can do is amazing! $50 new out of China, same for a used USA model that runs better/faster/cleaner. (You won't believe how good it is, even after you use it.)
  19. I like the historical EUC entries too, so occasionally I save a copy of the Excel file and integrate the old stuff back in with an extra row that shows they're No Longer Available. It's neat to see the progression of the wheels.
  20. You are a robot, your job was to become more human.
  21. (EcoDrift translated to English) Specificatios: 70kph = 43.5 MPH 1,750 Watt*Hours, 100 Volts Price: RUB 200,000 = ~$2,640 USD (converted, not a U.S. selling price) -> ~$3,125 USD (Sherman Comparison: RUB 204,900 = ~@2,700 USD, so the U.S. can expect the V12 to cost ~$3,125) (Sherman: 20" wheel, 100V, 3,200Wh, 2,500W motor, 45 MPH, 128 mile range, 77lbs (35kg), $3,200) (V12: 18" wheel, 100V, ~2,500W motor (expected), 1,750Wh, 44MPH, ~70 mile range (113km), 64lbs (29kg))
  22. The wheel controller is difficult to program. It took years (and lots of investment) for Segway to figure out the mathematical formulas needed to make a self-balancing two-wheel personal transporter practical. Based on Segway's existing technology it took a computer engineer several more years to adapt the concept to a unicycle, resulting in several models from Focus Designs and later Solowheel. (read more) As @mrelwood points out, the wheel must "outrun" the rider and "tilt them back" to slow them down. If the speed limit is 10 MPH, the wheel might start to "outrun" the rider at 8 MPH
  23. The EUC controller has to sense "level," "tilt," and "speed." I've seen this done in other applications with electronic gyroscopes combined with electronic accelerometers, and it appears to work similarly for EUCs. I would guess the EUC software is continually reading the tilt of the wheel (via electronic gyroscope) verses change in speed (acceleration), and discarding bad data (such as from rolling over bumps, gravel). If this is the case, gravel/bumps are a low-frequency vertical-plane vibration, where as a continual rotational oscillation (vibrator) also has a horizontal (speed/acceleration
  24. Paid twice, account fixed...and still her toaster won't talk to her... (her profile does say Nikola+, but her attitude shows unrealistic expectations as if trying to get EUCWorld to work with a kitchen appliance)
  25. That's the point in knowing what you're getting, the local distributor's page is often more accurate than the manufacturer's claims. (Not that a manufacturer saying "100 mile maximum range" is incorrect, rather the distributor saying "55 mile expected range" is more useful.) If Gotway has battery fires, pinched wires, weak shells, and bearing problems, but also makes the fastest ECU at pretty reasonable prices, so be it. Gutter oil exists (seems used cells in some AliExpress EUCs do too), that doesn't mean some people don't mind eating it occasionally. I'm saying if you plan on cruising
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