Bad nosedive after 100+ miles without one.



  • Have a onewheel + and put about 200 miles on it. Experienced some bad nosedives in delirium initially after working my way up, but all seemed to be leaning too far forward while going up hill. This one was on flat ground in Mission which I had about 100 miles of experience riding with zero problems, very comfortable. Zero pushback, riding completely flat, same stance as I had every day for over a month. Suddenly it's like i'm thrown out of a moving car with a blindfold on. Broke my clavicle so badly that it required surgery to realign. I could have purchased 15 of these things for what that cost me!

    When powered on, the one wheel has much resistance in the motor and therefore the wheel, when powered off the wheel moves freely. I think that if Future Motion could let the thing nosedive but glide to a stop instead of feeling like it's tied to a chain and keep you from just balling up with zero notice it would be much better. Like a regular skateboard, if it nosedives let the wheel go free so there is a chance you could ride it out.

    Helmet is an absolute must, this would have killed me had I not been wearing it during this and about 3 other early falls. I'm going to enjoy falling on the snow this winter and we'll see if any changes are made to help with this common issue by the spring.

    Again, zero warning, zero pushback, same stance, almost at the very end of my ride with 20% battery remaining. I know what pushback feels like and have avoided this for 100+ miles. Something more has to be done or someone is going to be very seriously injured or worse.

    Just take away the resistance on the wheel during a failure (nosedive or sensor issue), and give us a chance to ride/run it out. I've had some bad falls in my time on many different things but nothing like this.



  • @aspenlife

    Sorry to hear it.
    Hope you heal fast.



  • @aspenlife

    Sorry to hear of your fall and injury. Hope you heal quickly.

    How fast were you going when it happened?



  • @aspenlife I'm not sure that's how the OW works during a nosedive. It's the motor not having enough torque to both propel you AND stabilize your board (or, more specifically, keep your front from tilting down from the forward lean you are applying to it).

    The wheel doesn't seize up when you nosedive - it's your weight finally pushing the front of the board into the ground. I am pretty sure the wheel does spin freely, but that wouldn't matter - the nosedive is a massive brake.

    Read more about nosedives here in the forums - lots of great advice.

    My one tip - ride with your feet (especially your front foot) as close to the wheel/fender as you can do comfortably. That reduces the torque needed to keep your foot and nose up off the concrete.

    Be careful!



  • Thanks for the replies. I will try to move my front foot closer to the wheel. I've read several incidents and I know it's not uncommon. I was putting my feet along the diagonal line on the front since I ride straight stance and not goofy it seemed like the line was an indication of a comfortable position for my foot but I guess moving it back makes sense. I'm sure I just pushed it without noticing any acceleration or extra forward lean. Not sure how fast I was going, I was in Mission and definitely not full speed but I was hooking it. Just exploded on the pavement. Doing well now, just going all out shoulder pads next time once it heals. Be careful out there! No helmet and I wouldn't be typing this!



  • @gwinntanamo said in Bad nosedive after 100+ miles without one.:

    from

    One more thing about the wheel moving freely. On mine when I power it on and move it with my hands on the edges of the board the wheel has quite a bit of resistance because the motor is on and engaged, power it off and it's just freewheel. So my thinking is during a nosedive, obviously you're going to dig in and slow down considerably but as long as the power doesn't go off on the board the wheel will still have that resistance which just slows it down faster. That was all I was thinking with that. If that resistance wouldn't be there it may give you a small chance to anticipate how you're going to land? Just a thought. Thanks!



  • @aspenlife OK, yeah, that's more clear. You are correct about there being resistance.

    In my experience, unless I'm really lucky, as soon as my nose touches My back foot is already off the board and the race is on...

    While you're healing, do as much reading about nosedives as you can. They really are terribly dangerous, and almost always avoidable.

    Another thing to pay attention to is bumps/holes in the road - the OW can handle a lot, but if you are already pushing it speed-wise, any bump will force the OW to try to restabilize (which requires power from the motor), and if you're already pushing it - it will overload the motor and cause a nosedive.

    Get well, and ride safe!



  • When the battery is low, like 20% and under, there is enough "battery sag" that it can't output as much and has a harder time keeping the board level. This is more evident on the + due to the larger motor. I've seen a few of these nosedives and they all have the same thing in common, they happened when the OW battery was low.



  • Thanks for taking the time to write this. I'm at about 120 miles on my OW+. Only nose dives I've had are on steep uphills where I am pushing really hard forward to keep climbing.

    This weekend, I was in an RV park in Nevada City CA and this one section of a hill was steep. Really steep. When I climbed in Delirium, it would nose out at the exact same spot every time. When I changed to 'elevated', I could climb right through it. Then at the top, I'd mode change back to 'delirium' for the ride down the hill.

    I did experience a nose dive on flat pavement once. Thankfully I was only doing about 5mph. Turned the board off and back on. Seemed to have cut out for some reason.

    Again, thank you for telling your story. Will keep me cautious.

    JR
    prohoodcleaners.com



  • @jrfent Currently nursing a broken arm/shoulder after a nosedive (I have 256 miles on the board, with only one bad spill before, when I hit a bump at speed). I think I overaccelerated from stop (it happened FAST, so I'm not sure). I've got a few months of PT before I can get back on, and when I do I will pay close attention to my stance (I try to have my front foot close to wheel, but it was at the end of a long fast ride, maybe I had pushed my foot forward without realizing?) and I will also be switching to Delerium for a while (I preferred Mission on pavement, but I am hearing it may be less reactive to this scenario than Delerium is).



  • @aspenlife I think there's probably some misunderstanding about the "resistance" you're feeling in the motor when it is on but not "throttle active". The OW doesn't have a brake, but has a torque output in both directions, to be used for acceleration or for regenerative braking. When it is turned on but not active, pushing the board will regen current, thus the "resistance" you feel is indicative of what mode it is in. While the board is active, the only way to get resistance is to signal the gyro that the board is leaning back, which will enable regen torque.

    Since peak torque output is limited and goes down as the speed limit is reached, there is far less stabilization at higher speeds. Even at these high speeds, the board stays on and will react to a slow-down command, creating "resistance", but in this situation, you're already leaned back and are ready for that torque reversal. If you're suggesting that the torque reversal happens without command, or while the nosedive is occurring, I do not think this is the case.



  • @aspenlife said in Bad nosedive after 100+ miles without one.:

    Something more has to be done or someone is going to be very seriously injured or worse.

    Man, Ive been saying this since day 1... if these things go any faster without more safety precautions implemented, we are going to start eventually hearing about OW related fatalities..



  • Thought I’d be cool a couple weeks ago and went on some speed runs. Got to 22.5 mph successfully after fighting push back. Then decided to go for more and went down hard. Broken ribs don’t feel good and neither does the bad road rash.
    Wasn’t wearing and safety gear at all. These things are crazy fun but can bite back hard. Learned my lesson the hard way as I’m sure others have.
    Cruising around is all good up to around 15-17 mph but if you’re going to try for a top speed or don’t feel comfortable I’d highly recommend safety gear.



  • First off, I'm sorry to hear about your fall and surgery. Take it easy and heal quickly!
    Second, you may not agree here but you have to realize that 100 miles is like nothing. For perspective, I do 100 miles in an average week of riding and have close to 10,000 miles on a onewheel total. In that time, yes I have nosedived, but also I've learned how to have more control over the board and avoid them. I doubt this was a board failure.
    //
    What I'm getting at here is don't be discouraged, heal up and take the time to learn the board a bit better before pushing it. I hope you decide to keep riding.



  • @slydogstroh

    ^---- He's right you know. I'm working towards my 2000 mile mark. But damn. 10k. Impressive dude.



  • @rado I had a nasty nosedive under these exact conditions. I had been on a longish paved path ride and turned around at just before 50% battery level. Right around 20% the board nose dived out of the blue. Was traveling at about 14 mph. Not able to run it out, my body took a nasty road rash shoulder, knee, side by rib cage.

    Since I’ve read your comment I’ve been wondering about the battery technology and wondering how well it will be able to provide necessary voltage as the battery ages and looses capacity. Seems like the older a OW get the more likely this type of dive may happen.


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