Popular Content

Showing content with the highest reputation on 05/16/2017 in all areas

  1. 10 points
    Well, I finally decided on what to buy ... and to my surprise, it wasn't a Kingsong 18. It's an MSuper 3 with the 1600 wh / 1500 w motor at 84.2 volts. The higher voltage was one of the key things that sold me. I sprang for the seat too, since frankly I think riding a EUC seated looks as awesome to me as some say it looks dorky to them, and because it should provide some relief for my back on longer rides. I'd be surprised if it really works for me since I'd have to squat really low, but there's only one way to find out ... I made a deposit with Jason and am going to put some more money on my card in the next day or two and finish up the process. Time to go buy some protective gear! Hopefully soon I will be sharing my enthusiasm more than my injury photos. Boy is this gonna freak out the dogs ...
  2. 9 points
    I was just out for a ride to the seawall, got a few blocks and a motorcycle cop pulls me over while going from a road to a park. He asks me how long I have been riding the wheel, I tell him a month or more. He says that in Vancouver, it is illegal to ride these EUCs anywhere in the city. No sidewalks, bike trails, bike lanes, nothing. He says he could give me a $530 fine for riding it in Vancouver if he sees me again! He says they are classified as motor vehicles and cannot be insured either. I just spent $1400 cdn on this wheel, it's my commute to work, and my absolute favorite thing in the world and the cop says i will be fined $530 (which I cannot afford) if he sees it again! $#@%!!!! So now I am faced with not riding a brand new wheel, or facing an unpayable fine if I do. If you live in Vancouver or BC, or just give a damn for some reason, please email the Mayor's office, it's easy! http://vancouver.ca/your-government/contact-mayor-robertson.aspx 604-873-7621 Media relations mayor.media@vancouver.ca Address Gregor Robertson, Mayor 3rd Floor, City Hall 453 West 12th Ave Vancouver, BC V5Y 1V4 I have not felt so absolutely devastated in a long time, I LOVE gliding my wheel! /Seppuku
  3. 8 points
    Dear @rayna903, please correct me where I'm wrong. My sources for this post are https://www.facebook.com/1593003297614828/videos/1875867519328403 and http://www.iamips.com/product/showproduct.php?lang=cn&id=31. Apparently, IPS is about to release a new EUC called "i5", available in two models using either the common 18650 or the slightly larger 20700 batteries. It seems to be a "last mile" solution for lighter users with 350W rated /1000W max. motor power and just one pack of batteries (16S1P). While that sounds like very ordinary entry level, the shell design is uniquely flat and apparently made from some magnesium-alloy, which takes all the structural forces while keeping the total weight below 8Kg. Batteries appear to be Panasonic 20700B with 4250mAh. While it is certainly not a performance beast in any dimension, I think it's quite an interesting approach for the light & casual user. I am very curious for feedback from everyday users on how the new shell holds up and whether those 20700B batteries might be an option for higher performance wheels, too.
  4. 8 points
    I thought I'd share this event that occured to me today. I was going on my usual run, but as I was heading down a slight hill on a sidewalk I think I noticed I was going a little fast so I went to lean back to brake. At the exact same time I hit the tiltback speed so I was leaning back with the pedals tilting back. That was not a good feeling! It felt like I was almost going to fall on my back while my wheel kept going forward. Luckily I managed to ride it through , and I think it was just the odd timing of hitting the tiltback while trying to brake at the same time which was unsettling. During those few seconds I hoped that I wasn't overloading the wheel with a very high braking current. Thankfully all was fine. I have delayed the purchase of special riding pants with extra padding, but I might have to reconsider that decision as a hard butt landing would not be fun! Has anyone else run into this rare occurence?
  5. 8 points
  6. 7 points
    Over the past 2 weeks I have only used my Msuper to commute with the round trip from home to work is around 30 kms. Today I felt sorry for my Ninebot One E+ it has been sitting in my garage collecting dust for 2 weeks. So I decided to ride it to work, oh boy was it a long and painful trip. Without realising I have reached tilt back so easily and the maximum speed I can get is around 22kph. At this speed it felt like I was walking, I had to think the whole trip to slow down. I could have sworn that the Ninebot didn't feel this slow before. I am going to take public transport home and ride the last bit, don't think I will be able to ride home it was stressing me out. What a difference cruising at 35kph makes not even mentioning how uncomfortable it was also. Poor Ninebot is going to retire for good now.
  7. 7 points
    As much as I would like to, I'm not always in a position to instantly reply messages. Goal is to usually respond within a couple hours, or perhaps a day at most, but occasionally when the tasks pile up, it's not always possible. Will be hiring a couple additional hands in the next month or so, which will give some more capacity... Over the weekend I had a chance to try out a few different model tires, to assess which ones have the most, or least, amount of clearance: the worst are the Chaoyang HS-5146 (which is a pity since I have quite a few of these as spares...). Stock Kenda's are acceptable, but even within a production batch there small irregularities with the rubber deposit around the perimeter which is why some tires may rub & others do not. It has has also been observed that tires inflated to >60psi will be more prone to scrapping. CST has a 1.95" tire which has plenty of clearance, so will probably be ordering a supply of these to deal with occasional scrapping problem.
  8. 6 points
    What's a Ninebot?
  9. 6 points
    I have slightly modified the design of the lower bar ( thanks, Mono!) to include the supports, now I can safely rest the wheel even without a wall available.
  10. 6 points
    In order to evaluate feasibility, I suggest to look at the size of the solar panels needed to recharge a smartphone, and the recharge times. Let's look at a relatively new device: http://www.solpro.com/collections/helios-smart. Forgetting for a moment the phone part, that device has a 5000mAh battery, i.e. 18.5Wh battery. It takes, in ideal conditions, ~5 hours to charge the internal battery. It has a 130 x 260.5mm solar panel, with a max power of 4.86W. In order to work well, it has to be oriented towards the sun almost perfectly A starting battery for a unicycle is ~160Wh. More than 8 times the size (there are smaller, there are bigger ones, scale things up/down for your scenario). So, in order to charge that battery in 5 hours (once again: assuming a perfect day and the panel titled towards the sun at the right angle), you would need a 50W panel, which usually is half a meter on each side (if you multiply that device size by 4 in one direction, 2 in the other, i.e. 8 times the size, you will get the same half a meter per side). Not really easy to carry (given how fragile those are). Clearly you couldn't coat the EUC in solar cells (not enough surface, too fragile to take the abuse of a fall, in any case being lot, between your legs and oriented poorly, won't generate enough to even start charging: below a certain sun exposure, the output of a solar panel is unusable), so an external panel is the only option. Would you be happy with a 5 hours recharge time on a perfect day? and that's for just a smallish 160Wh battery The other problem you will find, is that a EUC needs 67.V to be recharged, and solar panels usually are lower voltage (unless you get to pretty big size panels). Solar cells are low voltage, so you would need a lot in series to get to the right voltage. It's a lot easier to recharge a single 4.2V cell. While in theory you could use a step-up circuit, you'd lose efficiency and take even longer to charge. If yo look at the Sunpower range, 100W units tend to be 18V units, to get to the 67.2V we need, you have to get to their 435W panel (and you probably wouldn't want it, given the size and the multi-thousand dollar price) You could buy a standalone panel and use it, though... but unless you ride in the wilderness, you will recharge much faster from a power outlet... and big solar panels are not cheap. Frankly, once you take into account the size/weight of the panel, you would be better off carrying with you an extra 160Wh battery, already charged, and swap that instead
  11. 5 points
    My first post to this forum About a year ago I read an article about Finnish guy riding a EUC in the middle of the snow in Rovaniemi. I decided that some day I want to have one too. With a lot of reading this forum and watching Ians reviews I ordered Ninebot C+ about a month ago. I watched all kinds of tutorials how to learn to ride but at the end I did it in my way. I rolled few hours in two days inside house from the corner of the living room to a kitchen taking support from everything i could on the way. Third day I encouraged myself out and it started to go very well! I was supposed to rode only in the neighborhood but I rode many kilometers around the area with a big smile on my face. Fifth day I was at work with my Ninebot. It was funny leaving to home while there was 20 or so people watching outside - no pressure to keep your balance ECU's are not that typical here in Finland. At way home I had my first almost face plant. I accelerated to a bridge where there is an increasing incline. It didn't seems so steep when riding. Suddenly my bot was beebing once and trow me away. I had my gear on (motorcycling is my other hobby) and I was luckily able to run an keep up (jogging is the other one). The bot was hurt more than I did with a nice scratches on it. I rode home and didn't touch it for few days. Yesterday rode another demanding route. Now when I went hills slower there where no problems. I thinks that situation before was just too tight with 450W motor and my 100 kg (220 lbs) weight. I was accelerating too fast in a demanding place. I think that for persons my weight there are better choices than Ninebot but when going easy in hills it's a lot fun too. Yesterday I got about 15 km with 220Wh battery going as fast as i could almost all the time. Last 2 km was in "limp mode" with a battery less than 20%. Uni-cycling is so much fun! After my crash I started to look my next wheel with more power. But that'a a another topic.
  12. 5 points
    Reason is that the developers do not ask for the necessary Android authorizations in 6.0, you need to set them manually. Go to "App permissions" and grant the Kingsong App "storage" and "GPS" permission. GPS permission is necessary for Bluetooth connection (I don't have time yet to explain this further), and storage permission is necessary for being able to do a successful firmware upgrade, if you want to do so at some time.
  13. 5 points
    Then, when the heat can be very good, the printed circuit board to kill a sudden spike in the power under heavy loads. It is not even a good cooling help at all. We need a well-designed and made of a circuit board. Those not yet anyone done.
  14. 5 points
    Good idea! And put a bit of new flux on it! Don't move the wire while it cools! Or everything starts at point 1....
  15. 4 points
    Historical moment, Gotway has now more posts on this forum than Ninebot!
  16. 4 points
    It wasn't to hard I took my time, the hardest part was the head lights, I basically pressed it against the unicycle and use a pen to mark the cut out but slightly smaller than the actual cutout so the pen mark won't show then I make the necessary adjustments, no tape measurer. Here's a pic of my 1600 feel free to copy which ever style you like, oh and also get some clear 3m tape because the tape that they provide with the foam doesn't work to well in the matte material,10mm will be fine
  17. 4 points
    Funny...the DHL delivery truck arrives at my house at 10pm last night! What company delivers packages that late at night? I had rerouted the new motor for delivery to my work address since I would not be home during normal delivery times and I needed to sign for it. For some reason my home address was still on the guy's computer. So this poor guy drives up my dark driveway after working a 12 hour shift and rummages though 30 packages in the back of his truck only to find out there is no wheel on board.. I had a feeling but I helped the guy anyway. Then I find out the guy still has to deliver the remaining packages in his truck before going home. He was cussing out DHL all the way saying he gets sick worrying about what might happen when deliverying packages to people's homes this late at night. Last week he was cornered by 2 German Shepards. I hope he made it home safely!
  18. 4 points
    We are living in Xi'an, Shaanxi Province China this summer. Here's a picture of a local Xi'aner with is Inmotion V5 which he uses to tour around the city
  19. 4 points
    After riding the new MSuper a couple of weeks ago, side-by-side with my ACM, I can say that the MSuper's shell is similar to the ACM, but the ACM still has a more rubberized texture. They are not the same materials. But it does appear to be an improvement over the original MSuper. Having now put over 800 miles on my original MSuper V3 820wh wheel, and dropped quite a few times, I can say that the MSuper is not a fragile wheel. I don't feel like I have to baby it at all. Of course you can always have a freak fall where it spins out of control and hits in just the wrong place, causing serious damage. The same could probably be said about most wheels. Being a wheel that you're going to learn on, I think it's a good idea to add padding on the various corners. When I learned on my ACM I went to Home Depot and bought a 8' length of rubber copper pipe insulation (not the foam type). About $5. Then buy a roll of 3M Low Residue Duct Tape (leaves no residue if removed within 6 months). It's an inexpensive alternative to Gaffers Tape. Use that to attach the rubber to the wheel. The tape is also available at Home Depot.
  20. 4 points
    The shell, assuming the rubberized version sold now is like the ACM's, is virtually bombproof (the screws are the weak point). These wheels are much sturdier than you think. If you want to use a leash, obviously fix it to the real handle (not the retractable one). You need to worry about scratches mostly, the wheel won't fall so hard while in training, it will just spin out. Underside of pedals and especially the pedal brackets (had to metal file mine clean) is in most danger, as well as any protruding corner (like the side panel extrusions' corners, side panel corners, and the top parts of the wheel, especially the front and back "corners"). The only place where you realistically need to protect against impact are the front and back corners on top.
  21. 4 points
    I have tried to show what would become this hybrid tire shape after mounting : According to my experience with this kind of tire, the final shape would be close to the picture.
  22. 4 points
  23. 4 points
    It depends on which pins you measure, but usually having 0-resistance (or very low resistance) between two pins is a sign of a dead mosfet. Of course there could be something in parallel with the mosfets, which may make diagnosis difficult. In a typical three half-bridge -configuration, all the mosfets are the same type, and should measure the same, as far as I know. If you still want to go ahead with replacing them, easies solution is to replace them all (assuming they're the cheap variety), but if you want to try and find only the broken ones, for "typical" N-channel mosfet pinout, you should get something like this as resistances: (Positive probe -> Negative probe) Gate -> Source: Infinite Gate -> Drain: Infinite Source -> Gate: Infinite Drain -> Gate: Infinite You may briefly see a high resistance value going up shortly, until it goes beyond the meter maximum limit ("infinite"), as there's some stray capacitance between the gate and other pins. If gate is directly connected to either drain or source, the mosfets' dead (gate insulation is damaged). Drain -> Source: Very high (megaohms) Source -> Drain: Depending on meter, possibly lowish (continuity/diode check should show a small voltage drop over) Drain -> source won't probably be infinite, but very high, megaohms or tens of megaohms or something, there's small leakage there that will give you some values. Measuring the gate could leave it charged near the threshold level, allowing some current to flow, if the gate is floating otherwise in the circuit, which could show up as a lower resistance (but shouldn't be anywhere near short-circuit, 10-100k's at minimum?)... If the drain -> source -connection is shorted, the mosfet's likely dead, N-channel shouldn't be fully open on its own. The latter one (source -> drain) measures the body diode, although depending on the circuit in the actual board, it could also measure separate flyback diodes nearby.
  24. 4 points
    Hi, silly question, can you confirm you haven't accidentally put the wheel into "speed restriction mode" in the App? Are there any beeps accompanying the tilt back and what are the LEDs on the wheel doing when this happens?
  25. 4 points
    @EUC Extreme I have always wondered why you don't make your own performance type of EUC. I would buy it even if it costs $5000 or more. Just like cars or motorcycles there are the cheaper ones and better quality higher output like Ferrari. The closest we have to a high performance is the 84v euc's but even that is at a poor quality.
  26. 4 points
  27. 4 points
    Scary!! I'll be soldering all of my wheels from now on.
  28. 4 points
    I just posted this on the Gotway Facebook page
  29. 4 points
    Ok let's not make too light of the subject here.. It's not the end of the world maybe but I really hope this kind of stuff won't be repeated and they learnt from these mistakes by now, or we can look forward to more banning! This is something that should have never left any factory employing even the most basic quality control procedures that could be called sensible for this type of machine. These guys need to wake up. I'd place an order for an 84V ACM 1300Wh or an 84V Msuper 3 1600Wh today but I mostly need a wheel for relatively safe commuting.. I just want a nice ride arriving at my destination in one piece, not only this week, this month or this year, but every day in the long rung. I'm not looking to do extreme sports at 7 AM in the morning showing up at work a bloody mess (or not showing up at all because my EUC suddenly failed unpredictably at 40 km/h throwing me under a truck)... Accidents can always happen due to rider error with serious consequences of course, but that should preferably be the only cause of an accident, ever. I don't want to be over dramatic but these reports just make me sad and angry, especially at this price point. At the same time I very much appreciate that any problems are brought into light, so we can make better informed decisions for ourselves. And also inform the manufacturer what happened and that the community is not happy about this. That's what we're here for, sharing information and having fun, right? I'm not saying GW is all bad and I'm not saying I'll never buy another GW wheel! I'm just saying it seems to have limited use for me how it looks at the moment. It just doesn't strike me as a friendly dependable everyday urban environment commuter vehicle so to speak... They could and need to do better, I do realize other manufacturers may be no better (except maybe Inmotion as mentioned before has a clean record so far). But, only KS18, ACM, Msuper and the Monster so far allows riders to reach continous speeds significantly beyond 30 km/h. I think crossing that line by default calls for another level of responsibility, a level arguably not on display.
  30. 3 points
    Hello there! I am new to this forum and I am also new to King Song. But after having read a lot of the threads here, I decided that the KS16S is probably the best wheel for me - maybe not as fast as a Gotway ACM but safer and with more of a quality oriented design thinking. I ordered it directly from Diana@szkingsong.com last week and today she gave me the UPS tracking number for it. Diana has been very helpful and service minded, so I am now super excited to actually try out the wheel when it arrives in 10 days or so...! Although I am still very much an amateur, this will be my third wheel. I started on an Orb Wheel X2 that is now broken after having suffered too many bruises, but then went on to an IPS Zero and a Xima Lhotz. Will let you know what I think of the KS16S when it gets here!
  31. 3 points
    Cute! So where is the padding? I see this funky little shaped red pill in the area where your ankles would sit ( probably for the pedals) but zero padding for the calves. With the narrow shell profile and no padding my knees would be banging into each other when performing sharp turns or navigating any bumpy terrain. As @meepmeepmayer alluded to the design has a professional looking, expensive, aesthetic, business like appearance. It has Trump written all over it!
  32. 3 points
    You're getting there! Keep at it! I would favor a larger, flatter area. A good trick is to think 'tall' when your riding, even if you bend your knees (which you should). Thinking tall will help tremendously when you're learning to ride backwards. Thinking tall will also help you simply resting your feet on the pedals in a relaxed way. Just try to be as relaxed as possible it's the key to all sports. Cheers
  33. 3 points
    the app keeps crashing often! didnt have much time to check anything today but I made a video of my first ever steps on unicycle. its defo funny for those who know already how to ride it but im proud of day one And covered 10KM. My legs shake no doubt. Im still scared to push so I take everything slow...
  34. 3 points
    Okay, the deed is done! Talked to Jason a few minutes ago and paid off the remainder. He says the latest shipment of wheels is preparing to head across the ocean and he expects them to come in right about on schedule in the first week of June. Add a few days from California to Oregon and I should have my new MSuper. I will spend the meantime squirming in anticipation.
  35. 3 points
    The speed is relative, with a cart like this, in downhill you can be faster than a Ferrari Testarossa
  36. 3 points
    In a way, I think it's scary how safe people make it sound. Riders like Duf and Marty regularly talk about hitting pretty high speeds on their Monsters and MSupers and sometimes not even noticing. I find the same thing happens with cars. When you can really feel the road, like in a small economy car, you know how fast you're going and it's easy to stay at a safe speed. In a luxury boat, you float along and have no idea you might be well into the danger zone ...
  37. 3 points
    Welcome to the club! Good to hear about new happy EUC users. As you say, the 220Wh and 450W motor is a little on low side for a higher weight. But as long you're aware about the boundaries of your own EUC (all of them have them), you'll get more and more pleasure of riding it.
  38. 3 points
    Hold on to the furniture then for the first few indoor test runs and pendulums. And you can always use another person. You can, but I don't think it's a good idea for the very start. The flatter, the better. EUCs are much more comfortable on super smooth pavement than rough pavement than non-pavement. I'd also be worried about "locking" the tire in grass if you're really unlucky, especially if you start from speed 0 in grass. Not really a realistic danger, but why stress your new wheel unnecessarily. So pavement or another smooth, possibly softer, low resistance (hard) surface (like a basketball court or such) is best.
  39. 3 points
    Three ounces in an 18" tire is fine.The key is to make sure you shake the bottle well before insertion.Slime is the sh*t! I turned @Marty Backe on to it when we first met.You wont need the Harbor Freight attachment since you bought the bicycle pump.The Harbor Freight thing is for attachment to a compressor hose.
  40. 3 points
    As your elder (barely), I recommend that at first it is better to learn to ride slow than fast. To ride slowly is to demonstrate a great deal of control. It is very challenging, as it is far easier to ride fast at first. Until 'it' happens. To ride slow is to gain control and be in charge. I ride so slow sometimes that it seems as if I have almost stopped. Almost. These are very fulfilling moments. Imagine stopping (almost) on a thingie such as this. Control.
  41. 3 points
    Congratulations You'll going to love it, and I think the MSuper is a good wheel to learn on (it's more stable than the smaller wheels). Get ready to become addicted. Be patient with yourself. You may be lucky, but more then likely you will have some frustrating days at the beginning, but you'll soon be good enough to have fun while learning to get better. As one point of reference, looking at my log book, it took me about 2 hours (not in one day) before I could ride down a deserted street in a wobbly fashion. It took me about 10 hours before I wrote, "Today it finally clicked", meaning I could turn effortlessly and ride wherever I wanted. Let us know how you progress.
  42. 3 points
    no way - it's solid. mine only came apart because it smashed ridiculously hard into the ground multiple times in a row. i mean, REALLY hard... don't let it get away from you!
  43. 3 points
    Beschlagnahmen darf die Polizei dein Eigentum nur, um eine unmittelbare Gefahr abzuwenden. Das heißt, du kannst dein Eigentum sofort zurück holen, sobald die Gefahr vorüber ist.
  44. 3 points
    If you look at the area on the pedal frame/support where the pedal contacts it while the pedals are folded out, there is the same transparent rubber/plastic piece. Early GT16s had an issue of this piece falling out, resulting in unintentional sever pedal dropping, thus the inclusion of extra pieces. However, it seems Rockwheel has been thoroughly gluing these pieces to the pedal frame; at least on my GT16, there seems to be little danger of these falling out.
  45. 3 points
    I can make completely new designs anytime now, I sorted out all the minor issues on my test boards. I can adapt them to anything now. Only thing preventing me is finding someone to help with C code.
  46. 3 points
    Parroting pretty much what Slaughthammer already said, but it certainly sounds like you have a blown mosfet half-bridge, either on both sides (high- and low-side mosfet) or just one or the other and it shorts the battery when you turn the power on (either immediately or when it switches the not-blown mosfet on) and blows the fuse. Easiest solution is a new mainboard, although you could try replacing the mosfets too, but it's always possible they've taken something else with them. Having it repaired by a professional can fast become more expensive than a new board, depending on the type of problem, but if you've got the tools and at least basic soldering know-how, you could always try yourself, the parts probably don't cost much anything. The lower powered wheels use cheap mosfets usually, probably something like around 1-2$ / piece, even the "higher end" IRFP4110's used in Gotways and GT16's are something like 3-4$/piece and the KS16S mosfets are around 8$/piece.. If you have zero experience with electronics and/or no tools, then probably not a good idea unless you want to start learning...
  47. 3 points
    After a fright like that it sounds like you had better consider incontinence pants - as a bonus, they would give extra padding as well ;-)
  48. 3 points
    If a company can sell not one, but two unicycles to a customer 6000 miles away, they can certainly reply to emails and ship a logic board to a customer who is adamantly asking to pay for one. Your replies were not helpful in any way.
  49. 3 points
    Despite the cold and an uncertain time, our wheelers have had the courage to come, true warriors Thank you for your participation. Here's the video, have a nice time
  50. 3 points
    Hi All, Moving in from the Firmware topic into its own topic for Open Sourced Hardware. Over the next little while I will move all the content from Firmware onto this post. I've been working on Reverse engineering the Gen2 boards as a starting point for development. Should have that done and posted today. We hope to be able to use the same Git to do both Hardware and Firmware advancements. I will post the important links as they come to this page. Lets keep the topic to Hardware. Although I have a Mechatroincs background my firmware skills are limited so we will definitely need some support from our Firmware buffs. Welcome to the topic. Mo