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Found 7 results

  1. I've been absent from the board for almost two months ( been busy settling back into life in England), but I have been riding. I managed without a car for a month, relying on my wheel to travel. After that I needed to travel further, and public transport in England takes forever to get anywhere, and it's hellaciously expensive. Example Poole to London about 120 miles, £51. I have flown to Spain and back for less!!! anyway, I found myself in Bournmouth yesterday, and because I had my wheel with me,I went for a cruise along the magnificent beach. I'm not joking, having spent 5 months exploring the beaches of the Cote d'Azure, and Spain's Costa Blanca, and Costa Dorada, Bournmouth beach is just as awesome. so I'm cruising along, estimated 20kph, when I hit a small series of unseen bumps. I handled them fine, but my wheel (ks14c ) must not have liked the power surge required to stay in equilibrium, because I got ( yet another) violent pedal tilt back which threw me down the road, like a baseball batter sliding into home, face first. I hit the ground so hard, I couldn't keep my face Up, so my chin got a bump and scrape that drew blood. Today I have a scab about 2 cm square. i also hit the ground so hard that I bruised the pad of my left thumb and the tip of my left little finger was numb for about two hours. note I was wearing wrist, elbow, and knee pads. No injuries to those areas. Pads are good! additionally, both my shoulders hurt. Right now I move my arms like someone trying to learn how to control new prosthetic limbs, I.e very slowly, and I can't carry much weight. i also scuffed up my leather jacket. I was not wearing a helmet, but a typical bike or skate board helmet would not have protected my face ( I'm looking into this) This has been my worst, overall, and first real face plant ( face hits road) ever. And I was cruising along on level pavement at a sensible speed ( plus the bumps) why did it happen? well, I had been riding a while, and I didn't start the day with a 100% charge, so I was down around 53% power ( looked at app after the crash, not before). As I've said before, less than 60% on a small battery ( mine is 340wh) need to be handled conservatively. So why didn't I handle the trip conservatively? Well, actually I thought I did. Firstly, the LED readout on the ks range is wildly optimistic. It was lit up showing 60 to 80% with its woefully inadequate 5 bar range! But I knew that meant mat least 50%. Secondly, I was riding level, smooth pavement. Thirdly I was not pushing the speed, I was several miles into a mild 15 to 20 kph cruise. Fourthly, I was not showing off. this thing came completely out of the blue. Have I mentioned that I HATE the Kingsong violent tilt back? As I said, it wasn't the bumps that threw me down the road, it was Kingsong sudden and violent tilt back that threw me off. What's the point of an accident avoidance scheme that includes a violent accident as its modus operandi?
  2. Hi all! I joined this forum in hope to get some insight on why accidents happen with electric unicycles. I have no experience with them and am doing a little project on whether electric self-balancing devices, motorized skateboards, etc. should be legalised in public areas (in Switzerland) or not. So, here are my questions: 1. Whenever you had an accident, which category would you place yourself in? (It would be helpful if you could shortly state what happened as well) A. self-inflicted, no one else included B. self-inflicted, other people included (e.g. lost balance in public area and crashed into pedestrian?) C. device failure D. other party caused the accident 2. What kinds of injuries did you attain? Was a visit to the hospital needed? How long did it take to fully regenerate? 3. If it were legalised, would you say, that certain protective gear such as a helmet, wrist guards and knee pads should be mandatory? 4. Is it safer to drive on pedestrian walkways, bicycle lanes or the open street? What should the speed limit be for each of the options? I am thankful for every answer! Cheers, Alexa Edit: If you can spare 5 minutes of your time, please fill out the following survey: https://evaluation-app1.let.ethz.ch/TakeSurvey.aspx?SurveyID=78L1n561 The link is also in another thread I have created - just in case you have already come across it.
  3. Hello, French Wheeler, but not as good as some other, I had a bad accident (broken shoulder, now with some metal!!) with my small ninebot one E+... and I spent some time in order to understant why we face cut out or accidents. So, on the forums, I could recognize 4 kind of accidents : 1- Pilot did ignore alarm.... nothing to say.... too optimistic, 2- driving accident (bumps....), 3- Sudden cut off.... (looks like my accident, but I'm not sure it wasn't a technical failure), 4- Technical failure. Rare since construcors did improve the safety...or correct bugs (BMS for instance). For the point 3, I did some calculation, that shows that specification of constructors seems to be far too optimistic, and the speed alarm does not consider the wheight of the pilot... which has a huge impact. What I did consider is a common case of accident : you run on flat road, no alarm, straight... and you have a small slope (not big, couple of meters long!). So immedialtely, since you do not consider you have to slow dow, your Wheel has to give all power in order to maintain the speed during the slope. In this condition, considering a 10% slope (not big at all, it is a 6° angle road), what is the maximum speed you can run? I did consider air drag, which has a big influence over 30 km/h), the solpe that I consider as a safety margin, and the wheight of the pilot. The power was considered as constant whaterver the speed is (optimistic), and, since nobody know the duration of the peak's power, 0,5 second for this peak (which is only use for bumps in fact!). Yield of the Wheel in order to transform electrical energy to mechanical energy is estimated at 75% (tests on some gotways). What do we calculate show that with a 500 W, at 25 km/h, you're not save at all... except if you are a kid. On a gotway ACM our MS3, 45 km/h is not a realistic speed since air drag consume most of the power... What do you think? Conclusions : - Power, and slow speed is the key for safety... - Adapt speed limit cosidering your wheight, - If you want to keep the hight speed limit, go quiet, and in all case, use protections!!! Of course, this is only my caclulation, an you can disagree! EUC safety speed.xlsx
  4. Hi There, my v2 is not even a year old and already broke down. The axle snaped and I had a nasty fall, injuring my right shouldger and knee badly. I had a closer look and it seems that the axle corroded, but only on the side where the wires come out from the motor, and that caused the accident. How can I get it swapped claiming the 1yr factory warranty? Since the axle is built into the motor the whole motor needs to be replaced. All ideas a re welcomed and appreciated! Regards
  5. Dear Community, The day before yesterday, I finally received my monowheel after having been waiting for the ninebot one P for more then 8 months, and it does not seem to come out any more, I decided to buy the new Ninebot One S2. The first 10 km were great, I had to get used to the mono wheel. Then yesterday I wanted to start my first round of about 5 km, and first I had to ride up a hill. With about 15km/h I was suddenly listening some beeping and reduced the velocity. Suddenly with another beep the Ninebot started tilled in front and I had a quite bad fall to the ground. The result, the ninebot one s2 has scratches everywhere, and even wearing helmet, knees and elbow protection, I broke my wrist, being almost knocked out for the next couple of months. I want to remark, when I was first trying the monowheel in my flat, I noticed trying to role over a border of a door, as it was not able to get over it, suddenly tilled in front, like a reaction to overload. I remember that I thought, if this happens on the road then I would have a big problem. And it happened. The same reaction rolling up hill. (Please refer to the photo to see where it happens). I have already advised the shop who are going to check the 9bot and have send the blackbox report to the 9bot engineers to check this behaviour. Battery Power when I raised up the hill: 45% KM: about 10km. If you want to know any more details feel free to ask. Regards
  6. Hello Friends I hope this advice will help everybody here Well The friend s daughter recently just had an accident with a Mini. How to avoid this? Here's what I recommend: 1 / First know the route in advance allows you to prepare for obstacles such as deformation of the roadway, sidewalks, traffic problems 2 / The child's weight is important, in fact, the Mini is based on the weight of the owner adjusts the driving function, you need to do is go into the settings and reset factory settings at each change of users, to "erase" the memory of the mini data about your weight and driving attitudes. 3 / With Ninebot application, limit the speed between 6 and 10 km / h for the first 20 minutes of ride, that the Mini stores attitude and weight of the child. 4 / helmet, elbow pads, knee: Remember protections ? 5 / Finally you always hold back the child to help anticipate obstacles by your advice 6/ after dont forget to restore Factory Settings for you ? My original advice can be seen here (available in spanish and french too) : http://mini-j.jimdo.com/home/news/mini-advices/ (Im not making money with my blog , there's only a google cookie inside)
  7. Hi All, I want to inform you of an accident I had two days ago. (I have about 170 Km overall on my IPS Zero) I was on my way home on my IPS Zero, driving in the middle of a small side street at night as, only 150 meters from home, I consciously thought: let's accelerate to drive home fast. I wore a helmet and motorbike gloves. Estimated speed about 8 to 10 Km/h. I accelerated fast leaning forward. But this time I accelerated to fast (=overleaning forward). I felt the pedals going down ... with me falling forward. It happened so fast I had no time to 'think about it'. I just 'somehow' fell to the ground. I felt an impact on my head and felt that I was bleeding 'somewhere in the face'. Was conscious all the time. Fortunately nobody/nothing was around to be hurt/damaged. I hurried home to find the following: - I must somehow tried to hold of the fall with my hands but nevertheless I faceplanted and the helmet and my nose had direct contact with the pavement. - I have a wound on the nose, nose a bit swollen and minor bruises on the knee's. - No bruise on the palms (thanks to the gloves) just a bid of pain because of my weight. - Today I still have some pain in the right shoulder, arm - will recover, no problem. I'm convinced the helmet took most of the force of the impact on my head and prevented further trouble and pain. PIctures: Nose: about 1 hour after impact Helmet: the edge of the helmet was smooth before the accident! Gloves: on the right you see the left glove. The leather surface of the palms looked similar before the accident. The Zero is ok. - Just a minor scratch on one side.