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Showing most liked content on 01/29/2016 in all areas

  1. We are truly blessed to not only have a great deal of knowledgeable forumers who share their expertise, but also distributors who are not just here to sell, they listen to our suggestions and try to improve the wheel design to everyone's benefit. i want to thank one of our suppliers, @Jason McNeil for his continuous support and unparalleled customer service which went above and beyond my expectations. I bought my last kingsong wheel from him, and i suspect I might be what one would call a "difficult" customer and hard to appease. I bother him with minor items and questions all the time an
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  2. I almost have the BLDC controller ready for prototyping. It has a new mosfet driver that supports up to 600v. I have to test it and see if it needs much work on the software to work with common EUC motors. If there's no problems I can just move onto getting the balancing software made, it's easy enough to just use a development board or compact linux pc to develop it, there's no need to produce the central control board until the software is ready.
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  3. @Cloud you're really most flattering Cloud's been having some reliability problems, some down to bad luck, others on account of some KS sloppiness. In these situations, I like to use the general principles of 'is it reasonable?' 'would I be asking the same if the positions were reversed?'. Felt that the actions I did do were the very least considering the circumstances.
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  4. Love the song in the youtube-clip from the comments:
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  5. @esaj Alright. I've cleaned up the code a bit and added the bootstrap theme to make it look good. You can find it at my website: http://xyinn.org/ksu/ I changed the values it uses so to be identical to my key generator. This way both generators will generate the same key. The web version doesn't have much validation. But as long as you enter your correct ISN, it will work. I also tested some numbers with my old validation function and it is indeed working well. Enjoy. EDIT: I've opened up a pull request that includes my changes. @xamino please merge and host. My websit
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  6. Just a short comment here, since i helped some (mostly TG3 owners) to apply the BMS shunting. I assume one of the main reasons for the shut-offs were just due to bad quality cells (maybe in combination with bad designed BMS boards). Shunting is just removing the symptom and not the cause - the battery cells still are bad quality, and bad quality cells can get really dangerous - especially without proper safety measures applied (well designed BMS, regular manual checks etc.) So imho the best way to stay happy, healthy and enjoy the wheels is to get high quality battery packs! Last but
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  7. @Cloud So probably, as the battery packs are made in large series and all have the same couple of connectors, for the manufacturer is much more faster, easy and cheap to connect two batteries in this way. But obviously the best way is to connect the battery outputs together. Every time I buy a device (especially from Asia) I always try to open it and carefully check inside for all components, cables and connections. Because, due to high rates of production and lack of quality controls, there may be some little imperfection that may compromise the efficiency of the whole device. And, be
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  8. you'll be noticed o'right Most of ppl just look and turn heads, some ask nicely, some -especially the 20s range- would shout things like "what the fck is that". Today I got my first "that's so gay", thought for a moment to stop but fortunately I decided to ignore; after all, I'm the only one riding such a thing for miles around, better set a good example
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  9. Need to clarify when you say "street", as in the road or sidewalk? Almost every country in the world recognize that a vehicle is described as having 2 wheels or more and a place for the user to sit (Best to check on your country's transportation department for clarity. I know here in Hong Kong Segway type vehicles are also illegal to be used in public walkways and roads). As an electrical unicycle has only one wheel without a place to sit it is classed as a recreational toy. Best to use on sidewalks and cycle lanes and pathways. In the same lines police won't really have anything
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  10. 10 days ago I purchased King Song 14C wheel at http://wheelgo.com in London. Here are my first impressions. The most important feature of this wheel, and the main reason of choosing this model is speed. It’s amazing 28km/h! Such speed is not even achievable on Rockwheels with their fancy reduction gears. The only wheel comparable to KS on the market today is Gotway, but they are quite unsafe. If you fall down from IPS at 14km/h you just make couple more steps forward. But if the same happens with Gotway at 28km/h you risk to injure yourself seriously and to damage your wheel. In compare to ma
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  11. I have had my Solowheel EU since June 2014. Since then, I have used it for almost 2500 km for all kinds of purposes. First, I am using it every working day to travel the last 3 km to work from the place where I park my car. Second, I use it in my home town for all kinds of activities like shopping, running errands or generally just riding around for fun. Since that time, I have had spoken to countless people who were just interested in the concept, and that includes train officials, security people or police offices. Never have I had any accidents, run into people or been into any kind of
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  12. http://www.engadget.com/2016/01/29/us-customs-seize-16000-hoverboards/
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  13. Big thanks to Ian Sampson @ SpeedyFeet, Ordered my Translucent Blue Outer Rings last Tuesday and they showed up this afternoon in Arizona, USA. Another easy transaction with these guys, great communication and always fast shipping :):)Here's a quick edit in my hallway..
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  14. you know guys, you should really be careful with custom mods over batteries and such.. it's always a firehazard ready to happen, don't get me wrong here, but it's true.. :-/ anyways there is a company that sells eucs and also has support, it's the guy i was talking about earlier, also the same guy that sold me my first euc..
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  15. Sorry, but I have to ask, what body type do you have? I think you realized now these vehicles can and will go down easily if not cut out, a pot holes, stick, bump... You better be up to falling down and dealing with it... $500 is not going to do the trick, these are serious if not tricky transportation vehicles... Other wise buy a bike...
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  16. Yeah I'm around that weight too, however when I go on outings with my HK group we sometime ride up Mountains. On my last outing @Kevin Lee was riding his KS14 and he over heated pretty quickly and had to push the EU up. If anyone has seen Kevin (possibly in one of his vids) you will know he is very tall but also very thin maybe around the 75kg weight so it was double surprising that the KS14 over heated. All other EUs out that day managed to make it up without over heating. Possibly because the KS are excellent on flats and slight slopes having to sacrifice hill climbing to excel in th
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  17. These "daisy chain connectors" of Gotway are actually one Y-connector.or two Y-connectors(which equivalent to a cross connector), facilitating the parallel connection of all the packs. If you can juest replace SM-4P of the new pack with SM-2P from the old pack, the new pack will be connected the same way as before.
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  18. Sorry, in the process of trying to remove all the extra copies of the original tire photo in @Jed's last post I somehow removed the ones in the original as well! So @Jed is that the motorcycle tire mounted on your KS? Where did you buy it? I am sure some others might want do do this as well. A while back @EUC Extreme was saying it was really hard to find a knobby tire for his 18-inch Gotway. If it fits there it seems like this would be a good option, and it seems deep enough to take studs as well!
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  19. Chris, We might not disagreeing. I think there must be something in the EUC power conversion circuity that prevents current from flowing from the motor to the battery at voltages that are damaging the battery. You're calling it a regulator. I'm being more specific than that, as the circuit that is typically labelled a regulator (series voltage regulator) won't do the job. Being more general , people observe that for the motor to brake current must flow. That current has to flow somewhere. The battery works as place to dump the current (and resulting energy), if it's not ful
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  20. New year and new look for my nb1 : blue shell and black mat vinyl:
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  21. Again, not sure if you're disagreeing with anything I said, but I disagree with this: "and the motor itself will be pulling the load while it actively starts pushing backwards to break rather than the resistance caused from the load the battery was pulling causing it to break. This means that any electricity being generated from the motor will go straight to driving the motor in reverse. At this point, the load is the motor itself" A generator (or motor acting as a generator) will spin freely under no load. There are some parasitic losses (bearing friction and parasitic current pa
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  22. I understand you are Dutch (location Rotterdam). I have good new for you. I posted this before... In The Netherlands EUCs are NOT vehicles. Therefore they cannot be motorized vehicles. I did verify this with the Dutch authority (Rijksdienst voor het wegverkeer).
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  23. For putting the cells in parallel at the BMS your best choice should be to take exactly the same cells! If the cells are "too" different i assume this could easily lead to a shorter lifecycle of the cells. But here are more experienced battery experts how could maybe give you more profound answers. And when you are doing all the work with putting together your BMS you should consider to change the BMS printed circiut, too. As they saved with the batteries, they maybe also have used a low quality BMS board, too. If you want you can take a look at the thread you have there some
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  24. @fearedbliss Good job, that looks really nice I merged your pull request into the repository.
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  25. Hi I have ips zero 130wh and I have realised the following: 1. On full charge, average speed 25kph the max distance is 3.5-4km. 2. On full charge, average speed 13kph, the max distance is 8km - 8.5km The speed it affects a lot the distance. The test was made using the same aspects: - rider weight 70kg - tyre pressure 3. 5bar - leds on, on the meteor mood - asphalt, even ground, no hills or slopes - outside temp 5°C - no stops, no traffic lights - the test stopped when the first warning beep appeared at 20% battery and the pe
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  26. It's always tricky to tell an officer he doesn't know the law, but as far I (a non-lawyer) can tell, New Jersey law (Title 39) defines several types of devices that have motors yet are not considered "motor vehicles." Here's probably the most appropriate statute: http://law.justia.com/codes/new-jersey/2014/title-39/section-39-4-14.10/ In particular it says "An electric personal assistive mobility device may be operated on the public highways, sidewalks and bicycle paths of the State." Like most of the US statutes, an EPAMD is defined as "self balancing non-tandem two wheeled device" bec
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  27. My question was " What's your range with a single fulled battery ?" ;-) Although the app is on 30kmph maximum speed, the wheel bips around 24kmph. Yours too? So I don't dare riding faster than those first bips, fearing a cut off.
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  28. Chris, If there's no current, there's no braking. The motor will freewheel. If the motor is regenerating (has non-zero RPM) and has no load (battery fully charged) the EMF (voltage) will increase until current DOES flow (or it reaches Motor Kv * Motor RPM). If this voltage is greater than about 4.2 volts per series cell, excessive current CAN start flowing into the battery. At this point, the life of the battery life will be compromised since lithium plating will occur. So, it's really no different than applying a voltage across a lithium cell. If you apply 4.2 volts
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  29. I walked 33 kilometers gravel road asphalt lawn in equal proportions with two refills - pressure 2.7 / 3 Ps - weight 70 kg - the batteries are sony 340 - temperature 10/14 degrees - when they get to 35% starts to sink down the pedals with difficulty in tight corners - a 25% increase as much and you have to slow down along 500/700 meters and will start the alarm. after 10 minutes if you turn goes to 30% and you can take a more 500/700 meters. Perhaps not the most authoritative seen the lack of experience to do a test of distance but certainly do not believe you can get to what he says IPS
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  30. Quick question p owners, and sorry for hijacking this thread slightly: at what speed do you guys get beeping and/or tilt-back on level ground??
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  31. ..and chriscalandro is misstaken about the batteries... they will not output the same current as these are not single batteries but battery packs. Bigger battery = more batteries = more amperage
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  32. From what I know, that's right. My understanding is that they're typically 3-phase outrunner "direct-drive" hub-motors, although some manufacturers (like Rockwheel) have also used geared motors. There are tear down pictures of some of the motors around the forum and elsewhere, for example: http://aijaa.com/Qh533Z I have little background in electronics, I went to a school around the turn of the millenium that had lots of electrics (AC) and electronics courses, but wasn't that interested in the subject back then, and while I did ok in the courses, I have since forgotten pretty much all
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  33. I am AirWheel X8 owner, located in Athens. Using it for daily commute to/from job. Now I am looking for battery change, so if somebody knows how to import battery from China - please help me.
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  34. Just an amazing discovery today. The lighting colours on the IPS Zero are customizable! On every lighting setting except Atmosphere (i.e. Breathe, Meteor, Waterfall, Carousel, etc...), holding down the lighting setting will bring up a colour palette allowing you to customize the four colours for that setting. By default, they are set to red, yellow, green, and blue, but you can easily change that to variety of subtle hues. It works on both the android and iOS app.
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  35. @Aquaneo back to your question it almost seems like you have a different control board entirely than @esaj or I have. My first controller came with the board in late April last year died after only a few days. I didn't get the replacement board until a month later. It was definitely a different version of the board because they had changed some of the components. I get no tilt-back at all with the two boards I have had. I travel pretty regularly at 20-22kph during most rides and the pedals are exactly as flat as they are at lower speeds. What does your beep sound like? is it like this vid
    1 like
  36. I have an airwheel Q3, with identical battery pack and on flat surface I get 4 to 5 miles, the Q5 is very similar, with your weight it will handle around 10 degree slopes, and never accelerate hard or face a face plant. The airwheel have a very strong shell and they good for learning, but after you have learned a better wheel is the ks-18a 1100w motor 1360 battery pack, I believe for heavy persons that is one of the best choices for 3 reasons, the 18 wheel will help on bad roads, the 1100w motor is the largest I have seen, and the 1360wh battery is the best I have seen. The Q3 or Q5 with your
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  37. Hope you doing good Jed, i been testing this weekend the 1100W with a1360Wh battery driving to 30km/h, probably 33km/h on the APP for some long drive and so fare i didn't cross any shutdown and hope not crossing any. when i check the CEL LG-18650 MG1 2850mAh 10A 3.62V , LG advert to be 10A , is it the same one we talk about ? By the Jed, can we know where did you buy your KS ?
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  38. Sorry to bring it up once again, the EUC tries to balance even when you brake like that, so it ends moving back and forth (or say side to side) while sliding, thats very hard to control. And the next issue, if you slide and the wheel gets over 45° angled to one side, it simply turns off and freewheels for safety, there's the next faceplant iminent. Done beating the dead horse, sorry
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  39. Dont cross the wheel in front of you, how can you do that?? The skier do that because the skiis will skid a little along the snow and the skier can control the amount of skidding vs the resistance of the ski edge. The wheel cannot do that, it will not skid if its turned perpendicular to the travel path. You will just faceplant... i dont recommend rolling your feet forward as an emergency braking technique either. The best way is to lean back and squat a bit at the same time. Just need to practice to learn the braking pattern of your wheel to achieve the perfect amount of lea
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  40. I was stopped by two police officers (Well I believe one was in training) in Hong Kong today for riding my unicycle... but mainly because I rode across a section of sidewalk right next to the subway and the police were more concerned that I would collide with someone. So I got told off for it. Letting the officer know I was acknowledging his instructions and not challenging his authority and agreed with him that what we where going to discuss next was off the record. I started to question him about the use of an electric unicycle in Hong Kong. The officer acknowledge that there was no
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  41. The powers that be (those who make the laws) don't seem to realise that a euc needs extra power to keep itself balanced and the extra power doesn't always equate to extra speed. Maybe they need to be made aware that a 200/250W motor may be fine on a bike but it just doesn't cut it on a euc!
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  42. That really doesn't make much sense that you can ride it in one city but not in another. I like how they used the "You might get a fine" as in you might develop leprosy from riding the EU especially because they also acknowledge it is a grey area without clear define regulation.
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  43. Ok I hear you. But are you sure they said you can't use the EU at all or just not allowed to use it on the road?
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  44. I don't think you quite understand me still. For example in Hong Kong where I live by law the very definition of a "Vehicle" is anything that has 2 wheels or more and has a place for the operator to sit. Anything else is not classed as a vehicle. Skateboard: 4 wheels - No place to sit = Not a vehicle Roller-blades: 8 wheels - No place to sit = Not a vehicle Electric unicycle: 1 wheel - No place to sit = Not a vehicle Bicycle: 2 wheels - Has a place to sit = Vehicle Car: 4 wheels - Has a place to sit = Vehicle So an electrical unicycle although you ride it is not defined by
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  45. Why don't you just find stickers the same color as the shell and cover any markings instead of replacing them with other brand? Anyone you find suspicious asking you about the EU you can just say its an unbranded product. Stops them from having information to investigate you on.
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