5 ms·

I confirm this behavior and this is also the reason I vot rid of the board. Nosedives at red light are not fun at all when you are standing next to a road full

I confirm this behavior and this is also the reason I vot rid of the board. Nosedives at red light are not fun at all when you are standing next to a road full of traffic.

kzrdude 3y ago
What is a nosedive in this context?
- scrose 3y ago
  They’re probably talking about when you try to mount the board after waiting/dismounting at a red light, but the motor doesn’t actually engage and it just falls forward
  - bowsamic 3y ago
    That's not what they meant https://news.ycombinator.com/item?id=37717656 https://news.ycombinator.com/item?id=37717656
    - scrose 3y ago
      You linked to what I wrote :) It seemed like vernon99 was talking about nosediving from a complete stop(trying to go from motor off -> motor engaged but the motor doesn’t engage), whereas in the post you linked to, I was talking about starting from having the motor engaged already at a low speed (ie <5mph slowly moving back and forth waiting for a light) and then the power would just drop out. Same result, but likely different causes.
      - avianlyric 3y ago
        I read it as they’re stopped stationary at lights, balancing on the board (so both feet off the ground), and at some point the One Wheel just decides to turn the motor off. If I had to guess, it sounds like the motor hits some thermal limit and cuts out. Which would explain why it happens at red lights often, lots of high torque motor excursion performing small moves to maintain balance, but little to no airflow because the motor isn’t moving fast enough to pump air through itself.
- deleted 3y ago
  [deleted]
- novia 3y ago
  A onewheel is supposed to self-balance at all times. A nosedive would be when it failed to engage in the expected self balancing behavior, rendering it suddenly unrideable.
  - thinkmassive 3y ago
    That’s literally impossible. It can only balance within its operating limits.
    - lotsofpulp 3y ago
      https://thestoddardfirm.com/product-liability/onewheel/ https://thestoddardfirm.com/product-liability/onewheel/ > Once the device senses that it is getting dangerously close to these limits, it shuts off. This wouldn’t be a big problem on a regular motorized scooter, moped, or other comparable device, but the Onewheel has self-balancing technology that requires power. Instead of simply cutting off additional forward momentum and letting the user coast to a stop, the board lurches violently forward into the ground as soon as the motor stops, according to the reports of injured users.
      - thinkmassive 3y ago
        Yes, if you push through the pushback then you can get it going to the motor’s limit. What do you think should happen at that edge case? Preferably in a way that adheres to physics…
        pseg134 3y ago
        They already said what they should think happen. And after the lawsuit we will know if a nosedive is considered a reasonable failure mode.
        thinkmassive 3y ago
        > there’s no obvious reason the balance-assist system couldn’t be designed to stay on for a while after the motor stops Amazing, would love to hear how this works!

I confirm this behavior and this is also the reason I vot rid of the board. Nosedives at red light are not fun at all when you are standing next to a road full of traffic.

kzrdude 3y ago

What is a nosedive in this context?

scrose 3y ago
They’re probably talking about when you try to mount the board after waiting/dismounting at a red light, but the motor doesn’t actually engage and it just falls forward
- bowsamic 3y ago
  That's not what they meant https://news.ycombinator.com/item?id=37717656 https://news.ycombinator.com/item?id=37717656
  - scrose 3y ago
    You linked to what I wrote :) It seemed like vernon99 was talking about nosediving from a complete stop(trying to go from motor off -> motor engaged but the motor doesn’t engage), whereas in the post you linked to, I was talking about starting from having the motor engaged already at a low speed (ie <5mph slowly moving back and forth waiting for a light) and then the power would just drop out. Same result, but likely different causes.
    - avianlyric 3y ago
      I read it as they’re stopped stationary at lights, balancing on the board (so both feet off the ground), and at some point the One Wheel just decides to turn the motor off. If I had to guess, it sounds like the motor hits some thermal limit and cuts out. Which would explain why it happens at red lights often, lots of high torque motor excursion performing small moves to maintain balance, but little to no airflow because the motor isn’t moving fast enough to pump air through itself.
deleted 3y ago
[deleted]
novia 3y ago
A onewheel is supposed to self-balance at all times. A nosedive would be when it failed to engage in the expected self balancing behavior, rendering it suddenly unrideable.
- thinkmassive 3y ago
  That’s literally impossible. It can only balance within its operating limits.
  - lotsofpulp 3y ago
    https://thestoddardfirm.com/product-liability/onewheel/ https://thestoddardfirm.com/product-liability/onewheel/ > Once the device senses that it is getting dangerously close to these limits, it shuts off. This wouldn’t be a big problem on a regular motorized scooter, moped, or other comparable device, but the Onewheel has self-balancing technology that requires power. Instead of simply cutting off additional forward momentum and letting the user coast to a stop, the board lurches violently forward into the ground as soon as the motor stops, according to the reports of injured users.
    - thinkmassive 3y ago
      Yes, if you push through the pushback then you can get it going to the motor’s limit. What do you think should happen at that edge case? Preferably in a way that adheres to physics…
      - pseg134 3y ago
        They already said what they should think happen. And after the lawsuit we will know if a nosedive is considered a reasonable failure mode.
        thinkmassive 3y ago
        > there’s no obvious reason the balance-assist system couldn’t be designed to stay on for a while after the motor stops Amazing, would love to hear how this works!