Popular Post Barrett Roberts Posted September 1, 2017 Popular Post Share Posted September 1, 2017 My brother is in the hospital at the moment after an accident at 20+ miles an hour on the Onewheel+. He said the engine suddenly cut off and the nose instantly dropped forward and threw him to the street. His lung is collapsed and shoulder is dislocated. I don't know what may have caused this I wasn't there when it happened. I just wanted to pass this along so if you have one be careful. 10 Quote Link to comment Share on other sites More sharing options...
Popular Post Adel Posted September 1, 2017 Popular Post Share Posted September 1, 2017 Sorry to hear that, hope for quick recovery. I guess onewheel are subject to same cutout issues as EUC with equal disasteous results. I didn't realize onewheel could go that fast, but cutout accidents can be dangerous at any speeds. The engineer in me wonders if there should be system that could engage at cutout to bring the wheel to safe stop instead of crash. 5 Quote Link to comment Share on other sites More sharing options...
Popular Post Rehab1 Posted September 1, 2017 Popular Post Share Posted September 1, 2017 1 hour ago, Barrett Roberts said: My brother is in the hospital at the moment after an accident at 20+ miles an hour on the Onewheel+. He said the engine suddenly cut off and the nose instantly dropped forward and threw him to the street. His lung is collapsed and shoulder is dislocated. I don't know what may have caused this I wasn't there when it happened. I just wanted to pass this along so if you have one be careful. Prayers to your brother for a speedy recovery!! I have never rode a Onewheel Plus before but unfortunately any of our wheel's motors can cut unexpectedly for various reasons. For safety's sake Onewheel should take down the leaderboard congratulating riders who have the fastest current speed! 1 14 Quote Link to comment Share on other sites More sharing options...
Popular Post CaptainKBLS Posted September 1, 2017 Popular Post Share Posted September 1, 2017 I'm sorry to hear that. I hope he recovers quickly. I'm glad I don't have craving for speed. 5 Quote Link to comment Share on other sites More sharing options...
Popular Post Barrett Roberts Posted September 1, 2017 Author Popular Post Share Posted September 1, 2017 I don't have the craving for speed either. I just like to cruise and enjoy the ride. The problem with the onewheel as far as bringing it to a safe stop is that the motor keeps the board balanced and level with the wheel on the center. So while he was going that fast the motor cut out and of course without the power the front of the board just slammed into the pavement which creates an almost instant stop throwing him forward. I wholeheartedly agree about the leaderboard because he was actually trying to climb up it and had told me he was at 65th place. I ride mine like a boring old man and so far my worst injury is a badly skinned toe cause I was dumb enough to ride it in flip flops. Thank you for the well wishes. Surgery may be required to repair the shoulder and lung. I definitely would not ride it fast because it really sounded like the same issue I read about with the Gotway wheels 1 6 Quote Link to comment Share on other sites More sharing options...
Popular Post Marty Backe Posted September 1, 2017 Popular Post Share Posted September 1, 2017 33 minutes ago, Rehab1 said: Prayers to your brother for a speedy recovery!! I have never rode a Onewheel Plus before but unfortunately any of our wheel's motors can cut unexpectedly for various reasons. For safety's sake Onewheel should take down the leaderboard congratulating riders who have the fastest current speed! A Speed Leaderboard does seem like they are asking for trouble. I'm glad there is no mechanism for doing the same with any of our EUCs. The only thing worse than a Leaderboard would be one that offered a prize for the fastest rider. 10 Quote Link to comment Share on other sites More sharing options...
Barrett Roberts Posted September 1, 2017 Author Share Posted September 1, 2017 I completely agree. It seems like they are trying to appeal to the adrenaline junkie market. I don't know I have never understood that mentality 1 2 Quote Link to comment Share on other sites More sharing options...
Acturbo Posted September 1, 2017 Share Posted September 1, 2017 9 minutes ago, Barrett Roberts said: I completely agree. It seems like they are trying to appeal to the adrenaline junkie market. I don't know I have never understood that mentality Best wishes to your brother and a speedy recovery. Was he wearing any protective gear? Quote Link to comment Share on other sites More sharing options...
Popular Post Barrett Roberts Posted September 1, 2017 Author Popular Post Share Posted September 1, 2017 24 minutes ago, Acturbo said: Best wishes to your brother and a speedy recovery. Was he wearing any protective gear? No unfortunately. Though in this case I doubt it would have made any difference. He was thrown forward and tucked onto his shoulder. Luckily did not strike his head. The impact dislocated the shoulder and popped/punctured the lung. All the abrasions are on his side. All the normal places you wear gear to protect were completely unharmed. However, if he hadn't rolled and had struck that hard on his head without a helmet he would most likely be dead. 1 7 Quote Link to comment Share on other sites More sharing options...
Popular Post houseofjob Posted September 1, 2017 Popular Post Share Posted September 1, 2017 (edited) Sorry to hear and best wishes for your brother @Barrett Roberts ? The OneWheel+ is max 19MPH and should not be ridden past what I believe OneWheeler's term "kickback" (EUC riders call it tiltback), otherwise you risk high speed cutout where the motor/gyroscope can no longer sustain the power demands and stops balancing altogether. I'm not a lawyer, but with that misleading leaderboard and not a safety disclaimer in sight, for a product manufactured in the USA, I'd say you guys might have grounds to take legal action. (not to mention, as long as that leaderboard is up there like that, this might happen to other OneWheel buyers, especially impressionable kids) Edited September 1, 2017 by houseofjob 5 Quote Link to comment Share on other sites More sharing options...
Popular Post Chris Westland Posted September 1, 2017 Popular Post Share Posted September 1, 2017 @Barrett Roberts, I share the concern of others on this board, and wish your brother a speedy recovery. I think, increasingly we see these stories as cautionary for our own behavior. 5 Quote Link to comment Share on other sites More sharing options...
Barrett Roberts Posted September 1, 2017 Author Share Posted September 1, 2017 Thanks everyone. I'll keep you posted how it goes. 1 2 Quote Link to comment Share on other sites More sharing options...
Barrett Roberts Posted September 1, 2017 Author Share Posted September 1, 2017 Thanks for the info on the top speed. I never paid attention because as I mentioned I'm not a speed guy. My brother is a big guy at 6'2" and 230 pounds. So I imagine at 21.7 miles (as shown by the app) he was stressing the motor very hard. He didn't mention getting any type of pushback before it happened just FYI. 1 1 Quote Link to comment Share on other sites More sharing options...
WARPed1701D Posted September 1, 2017 Share Posted September 1, 2017 1 hour ago, Barrett Roberts said: So while he was going that fast the motor cut out and of course without the power the front of the board just slammed into the pavement which creates an almost instant stop throwing him forward. Very sorry to hear this. Wishing your brother a speedy recovery. What I don't understand is that the onewheel design is ripe for the simple safety addition of small wheels on each corner to prevent the immediate stop on failure mentioned above. The idea has been bounced around here a few times about how such a mechanism could be added to an EUC but on the OneWheel the structure is already there. 2 Quote Link to comment Share on other sites More sharing options...
houseofjob Posted September 1, 2017 Share Posted September 1, 2017 (edited) Heavier riders usually means more power demand, thus bringing the max speed cutout threshold lower than that of a lighter weight rider. (ie. lighter weight riders on the same wheel will always be able to theoretically go faster, kickback/pushback aside) Dunno how conservatively FutureMotion chose and set that 19MPH as max speed (firmware) in relation to the no load cutout speed. Edited September 1, 2017 by houseofjob 2 Quote Link to comment Share on other sites More sharing options...
Popular Post Demian B Posted September 1, 2017 Popular Post Share Posted September 1, 2017 I cringe reading of your brother's misfortune. I have a couple of Onewheels. Last summer, I was going top speed on a bumpy sidewalk and fell off injuring my wrists and a calf muscle. Ever since, I've had a hard time trusting it. I feel so much more comfortable on my Gotway EUCs. I have 1000 miles under my belt now and though I've yet to fall, I progressively wear more safety gear. I haven't researched this, but I suspect falls from a device where feet are perpendicular to direction of travel pose greater injury risk than when feet are inline with heading. I still think Onewheels are wonderous, but next to a Gotway, there's no contest. 1 4 Quote Link to comment Share on other sites More sharing options...
TremF Posted September 1, 2017 Share Posted September 1, 2017 (edited) 2 hours ago, Barrett Roberts said: No unfortunately. Though in this case I doubt it would have made any difference. He was thrown forward and tucked onto his shoulder. Luckily did not strike his head. The impact dislocated the shoulder and popped/punctured the lung. All the abrasions are on his side. All the normal places you wear gear to protect were completely unharmed. However, if he hadn't rolled and had struck that hard on his head without a helmet he would most likely be dead. So sorry to hear about your brother. I wish him a speedy recovery. I know what you mean about the safety gear not being any good in this circumstance. I wasn't wearing any when I had my accident and even if I was I would still have got the stress fracture in my elbow and cracked a rib. Your brother got unlucky with the punctured lung too. As with his, mine cut off and the front just dropped and I had no way to react (not even time to use the power of the dark side!), it just slammed me to the floor. Luckily I was going slow because I knew something wasn't quite right but didn't know what. It's definitely different to misjudging a kerb or whatever and it falling. You can step off from that. Edited September 1, 2017 by TremF 1 2 Quote Link to comment Share on other sites More sharing options...
Popular Post US69 Posted September 1, 2017 Popular Post Share Posted September 1, 2017 5 hours ago, Barrett Roberts said: He said the engine suddenly cut off and the nose instantly dropped forward and threw him to the street. Best wishes to your brother! Just to be clear.....perhaps for some newer members of self balancing "sports"....This CutOut behavior CAN happen on ALL one wheel AND Euc! specially if your are to fast! So some sort of protections are advised-always. 1 7 Quote Link to comment Share on other sites More sharing options...
Popular Post Keith Posted September 1, 2017 Popular Post Share Posted September 1, 2017 @Barrett Roberts, thank you for bringing this to our notice. I think Onewheels are underrepresented on this forum, so it is hard to know whether this is a one-off, or the tip of the iceberg - the latter I suspect. Bottom line is that the same physics covers all electric motors, maximum torque goes down linearly with increasing RPM, and the higher the torque you engineer into the motor without making that motor physically bigger then the lower that max RPM where torque hits zero has to be. If anything, it looks like the Onewheel's motor is smaller than on most EUC's. Coupled with that the Onewheel is more likely to keep going after a rider falls off than an EUC is as it will not necessarily fall over. In which case there it has to have a high speed cut-off built into it for safety. Or will it, in fact, cut off if you lift both of your feet off of the board as I know it doesn't balance until both feet are on the board. If this is the case then a negative G excursion like a hump, or jump, could cause it to cut out? It is very concerning if it does not have any sort of tiltback mechanism, but surely, if it did, they wouldn't have that awful high speed leaderboard? I guess what I am saying is there is an awful lot about how these boards function that we do not know? But one thing is certain, not only does injury risk increase exponentially with speed, but the risk of the board not being able to support the rider over any sort of bump or overlean increases linearly with speed as well - a lose, lose situation! 8 hours ago, Adel said: The engineer in me wonders if there should be system that could engage at cutout to bring the wheel to safe stop instead of crash. Short of a whole body airbag, the engineer in me says there is absolutely no way whatsoever that a single wheel self balancing device can possibly slow the wheel to a safe stop if the rider is trying to make it go faster, tiltback and warning beeps are the only mechanism available, to do anything else requires a minimum of 2 tandem wheels. 4 Quote Link to comment Share on other sites More sharing options...
Popular Post Rehab1 Posted September 1, 2017 Popular Post Share Posted September 1, 2017 7 hours ago, Barrett Roberts said: I completely agree. It seems like they are trying to appeal to the adrenaline junkie market. I don't know I have never understood that mentality You are correct that Onewheel is appealing to the adrenaline junkie! Unfortunately some EUC manufactures use the same tactic. 1 4 Quote Link to comment Share on other sites More sharing options...
Keith Posted September 1, 2017 Share Posted September 1, 2017 1 Quote Link to comment Share on other sites More sharing options...
Demian B Posted September 1, 2017 Share Posted September 1, 2017 1 hour ago, Keith said: @Barrett Roberts, thank you for bringing this to our notice. I think Onewheels are underrepresented on this forum, so it is hard to know whether this is a one-off, or the tip of the iceberg - the latter I suspect. Bottom line is that the same physics covers all electric motors, maximum torque goes down linearly with increasing RPM, and the higher the torque you engineer into the motor without making that motor physically bigger then the lower that max RPM where torque hits zero has to be. If anything, it looks like the Onewheel's motor is smaller than on most EUC's. Coupled with that the Onewheel is more likely to keep going after a rider falls off than an EUC is as it will not necessarily fall over. In which case there it has to have a high speed cut-off built into it for safety. Or will it, in fact, cut off if you lift both of your feet off of the board as I know it doesn't balance until both feet are on the board. If this is the case then a negative G excursion like a hump, or jump, could cause it to cut out? It is very concerning if it does not have any sort of tiltback mechanism, but surely, if it did, they wouldn't have that awful high speed leaderboard? I guess what I am saying is there is an awful lot about how these boards function that we do not know? But one thing is certain, not only does injury risk increase exponentially with speed, but the risk of the board not being able to support the rider over any sort of bump or overlean increases linearly with speed as well - a lose, lose situation! Short of a whole body airbag, the engineer in me says there is absolutely no way whatsoever that a single wheel self balancing device can possibly slow the wheel to a safe stop if the rider is trying to make it go faster, tiltback and warning beeps are the only mechanism available, to do anything else requires a minimum of 2 tandem wheels. I can only speak for the V1 OneWheel, but there is a tiltback when you reach a certain speed (15-18mph) where if you lean back quickly to confirm you got the message and then power forward, you can "push thru" the high speed warning and achieve absolute top speed before catastrophy. Some claim you can manually balance the board momentarily at that moment and save a nosedive. I don't know that this is true as I tried not to flirt on the precipice. There is no other way the top speeds claimed (if true) could be achieved without a technique like this because we all had the same firmware and the tiltback occurs at the same speed for all of us in the selected shaping ("Extreme"). As far as cut-outs related to the sensor side foot coming off the board, you have about a second where you can disengage both weight sensors before the motor cuts and the wheel effectively brakes. I believe once you apply pressure to both sensors pre-landing, the motor engages almost instantly. Firmware updates seem to have caused the wheel to overspin in the air so that on landing there's a bit of a wheelie or rearing that's unsettling even if you become accustomed to it. 3 Quote Link to comment Share on other sites More sharing options...
Popular Post meepmeepmayer Posted September 1, 2017 Popular Post Share Posted September 1, 2017 Good recovery to your brother! But it seems likely he simply went faster than the hardware is made for, so it was a simple overlean (in EUC terms). No mystery here (or unexpected hardware failure - does the onewheel still work normally?). The manufacturer encouraging to overstress a self-balancing vehicle with a leaderboard is absolutely crazy though Downright criminal. I agree with @houseofjob that even legal action may be worth considering (to get some costs back, but most of all so this stupid leaderboard goes away!!). 5 Quote Link to comment Share on other sites More sharing options...
Popular Post Barrett Roberts Posted September 1, 2017 Author Popular Post Share Posted September 1, 2017 Yes. He was in the new onewheel+ only mode called "delirium" which lists the top speed as 20mph. I'll have to talk to him more as he recovers and see what he remembers. They found an aneurism last night on the head scan so it's possible maybe he did strike his head somewhat. Though I haven't heard if it was from the accident or preexisting. Anyone who could self balance during a cutout on that thing when you are already leaning forward to accelerate has far far more balance and reaction than I have ever possessed. I'm not sure about the original one wheel but the + only has a sensor on the front and it is divided down the middle into two separate sensors. Your foot must be making contact with both sensors. So for example to dismount you can raise up onto your toe or heel or twist your foot to break contact. At speed apparently you have a second or so of grace in case you hit a bump or jump. All I'm sure about is that I will continue to ride mine slow enough that pushing the limits will not be in question. My favorite thing about the wheel is riding it off-road where you can't go fast anyway because you are watching for dips and holes in the dirt/grass 1 3 Quote Link to comment Share on other sites More sharing options...
Popular Post Rehab1 Posted September 1, 2017 Popular Post Share Posted September 1, 2017 (edited) 44 minutes ago, Barrett Roberts said: They found an aneurism last night on the head scan so it's possible maybe he did strike his head somewhat. Though I haven't heard if it was from the accident or preexisting. Very serious fall! Please keep us updated! As bad as this may sound if the aneurysm was pre-existing it might be a blessing in disguise. Prayers! Edited September 1, 2017 by Rehab1 5 Quote Link to comment Share on other sites More sharing options...
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