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Showing content with the highest reputation on 04/17/2017 in all areas

  1. 12 points
    Hi. This is my third euc and my first quick review. After a couple of mounts and 669,9 km. think I can show how is riding this euc and gonna try in English, not my native language, pls forgive my bad grammar. The incorrect information from inmotionIberia of max speed and range where it says 40 km/h and 40km but may say 25 km/h and 30km piss me off. But the price was ok for me (700€) I don't want the refound offered and decided to keep it. The advantage of that euc are many, good looking design, useful handle and lift swich. Bright front light, back light blinks when brake. Very comfortable due his curved shapes and hi padded sides. Hi pedals position are damn good for off road. Impressive torque, good autonomy and content weight. Need to improve the pedals and trolley quality, those get loose or comes with it from fabric (trolley). The inmotion app is full of busg. The battery position on top rise the gravity center and makes really hard for boomerang or coin flip tricks. The body shell are quite slim, that not help to keep it straight in hi speed pushing with the legs. They haven't grip at all to pull it up in jumps, foots slide unless you put the extra pads who inmotion gives in for ankles protection. I think is really good for cross due his hi pass pedals and big torque. Not to heavy to do tricks, and enough hard to not break if you don't do it well (unless the trolley bar and the pedals). Sorry but I can't compare it against other in his league, I only have other cheap "oneWheel" Who can't be compared. I want to make an extensive review with my top range, hi slope climb, max turning inclination, better pedal angle and more. Please, make your questions and comments, would be nice gather a great data base for all euc together
  2. 12 points
    Since I began modifying my Gotway ACM 1600 and posting updates in another thread I realized there is a great deal crossover information that applies to all EUCs. I am currently working on installing new hall sensors in the ACM but thought many EUC members may not be entirely familiar with these tiny little sensors and the huge role they play in the design of our wheels. Here is a short video I put together that demonstrates some of the basic principals of hall sensors. Edit: At 3:21 I become dyslexic(north is off)
  3. 11 points
    Please feel free to read my detailed review about the Kingsong 14D. https://gulongrider.blogspot.co.uk/2017/02/kingsong-14d-detailed-review.html
  4. 9 points
    There's a section of my commute in Miami, which runs along several 20+ story condo buildings. You can be riding along quite merrily, then be blasted by a downward gust reaching up to +40MPH. The Wheel's profile is unquestionably important. KS18 is the most challenging, to bleed some of the side wind, I occasionally have to adopt zigzag forward motion—to the bemusement of bystanders & dogs.
  5. 9 points
    My 9 month old Son's first "ride", under very controlled conditions - one of us is enjoying ourselves, the other appears rather indifferent to the experience The buggy actually steers very well.
  6. 8 points
    More lightpainting with my EUC - light trail left from riding a quarterpipe.
  7. 8 points
    That pack is labelled 132Wh: if there's another one on the other side, that brings the total up to a paltry 264Wh (32 cells)! Come on GW this isn't 2014: 48-64 should be the absolute minimum we'd expect from you. Large packs are one of the main reasons why you have such large fan-base, including this belated member to the club Whatever manufacturer makes a decent 800W, 30kph, >500Wh, sub-12kg class Wheel is going to do very well over the summer sales season. V5F/+ deserves a power/speed uprate; 14D is good, but battery not large enough, attention to detail could be better (like self standing properties) & KS need to do better on the truly terrible App; MCM4 meets performance requirements, but not exactly a beauty & lack of retractable handle is a non-starter for many buyers.
  8. 8 points
    Here's some EUC math that I had a lesson on: (Wind + Rain) ^ Umbrella Opening = Sudden forces in different direction * Air Braking = Close Call / Sudden Death .
  9. 6 points
    Wee J taking his new wheel for a spin.
  10. 6 points
    My undergraduate degree was in electronics, many moons ago. That being said, I never studied motors. Higher voltage means less current flowing thru the wires which means lower temperatures. That might be side benefit to the wheel manufacturers for moving to higher voltage systems - they can user lower (smaller) gauge cabling between the motor and the electronics. For practical purposes (in terms of voltages likely to be applied in our EUCs) motors are current limited not voltage limited. They are destroyed when too much current flows through the coils. As long as the current is limited much higher voltages could be used. I think the power electronics and battery configuration is the long pole when moving to higher voltage EUCs. The motors and cabling are the easy part of the equation.
  11. 6 points
    First time it got fairly windy (25MPH+)I took my wheel to my local park which has a pretty much square path around its parameter. it is quite open so I didn't have to counter much gusting but the only uncomfortable bit was going into wind where it very noticeably had the wheel beeping at much lower speed and the lean forward felt an awful lot. Sideways on the lean into wind was certainly odd but kind of fun after a while. The main surprise to me was that it seemed easier to handle the wind on an EUC than on a bike. I wonder if less side area and twice as much weight through the one wheel instead of two made it grip better but I'm sure I would have been pushed around a lot more in gusts on a bike. Like @Pingouin I would be a lot more worried about rain on my not at all waterproof KS-14C
  12. 6 points
    I hope the upgrade from 84V to 100V is better planned than the upgrade from 67V to 84V, where GW literally had the same motor, wiring, etc; and customers were testers if everything actually works (and turns out, the motor connectors and some other stuff wasn't up to the new voltage). At these speeds and wheel weight, you absolutely can't have any failing electronics anymore. If it's safe, this is what the monster always should have been - more torque (and I guess, more speed - a little scary). 100/84 is a 20% power improvement, so you can add 20% to the top speed of the 84V monster.
  13. 5 points
    So we talk all the time about hills/surfaces/rain etc, but does anyone else find that wind is the ultimate 'kryptonite' for eucs? I guess it's obvious really, given the physics of it all. I find myself religiously checking my weather app when I'm thinking of taking my v5f to the park, for instance. Anything above 13-15mph.... I just don't bother.
  14. 5 points
  15. 5 points
    Someone tell @Marty Backe no naked backwards riding in Canada due to poker hazards,albeit small.
  16. 5 points
    The motor side metal covers with the bearings are essential to support the rotating magnet support / rim / tire combo that spins around carrying the rider. They attach to the rim itself with several screws. When assembled the axle is supported on either side through the bearings so the rim can spin around the axle. The axle and inside parts remain stationary since there are wires attached to power the coils so they must not move. The wires have to exit through the stationary area as the motor covers / magnet support / rim / tire are all spinning. That is why they core out the axle so one side is hollow to allow the wiring to pass through. It took me the longest time to visualize this all out from looking at photos and some videos. This classic one is helpful:
  17. 4 points
    Man what an unpleasant end of a day. Mom was just yelling at the Dad over their child! I need a drink! Those ladies hands are so trained from years of winding stators! I know a lot of ladies that don't look down performing......... The first words that came out of my mouth were: "That fu...in Hunka!" Removing the lacquer is easy but locating the 4th wire that broke is not. It is hidden in the mass. I may be able to fish around on the opposite side of the stator. This stinks! I presented that question today to a guy that repairs electric motors. If the copper windings to any of the coils become compromised the processor will not receive the proper electrical signals (or something like that). He will take a look at it and if he cannot perform the repair he know a specialty shop that can. The issue is the cost! If I can pick up a new motor for $200 it might be worth it. If I received a new motor I would still add the new larger cables. That would be easy now. Scared....maybe a tinsey bit....OF MY WIFE!
  18. 4 points
    Riding in strong and/or gusty wind can be challenging but also great fun! I'll often take a circular ride around my local park when it's windy and practice riding downwind, into a headwind and dealing with different cross winds - all of which require different techniques. One of my offices is literally right under the Shard (London's tallest building) and you get very strong gusts along the street - that can be really challenging sometimes. From a trick perspective, spinning on the wheel in the wind can be awesome as if you position your body right you can spin really really fast in a strong wind (like a mobile) - i'll do a video of one at some point.
  19. 4 points
    Catastrophe averted! The seller sent a replacement, and it just arrived. Best of all, it's working perfectly! Now to find a less cumbersome way around inmotions geoblocking.
  20. 4 points
    Personally I think the inMotion logo is way better looking that solowheel logo which looks really amatuerish by comparison. And that red brake light on the V8 with the inmotion logo... that's really gorgeous.
  21. 4 points
    What manner of sorcery is this, the blocking Ignored user list? Wh why do I get this sudden odd feeling that I'm on a few people's naughty list already? Those people are missing out on 2273 awesome and interesting posts let me tell ya!! Don't hate the blockee, hate the cold weather and resultant shrinkage!
  22. 4 points
    That's exactly how I ride even if it isn't windy! You also might hear me quietly praying "Please God don't let me die, no faceplants today, let there be no weak cells in my battery pack..." Here's a selfie of me rolling through the woods demonstrating my technique:
  23. 4 points
    I don't have any measurements handy, but the ACM and MSuper pedals are very comfortable, and not small at all. The Monster shares the same ACM pedals. The MSuper pedals are noticeably larger than the ACM pedals yet the MSuper is a worse hill climber than the ACM. The ACM, MSuper, and Monster can all climb steep hills, but the ACM goes fastest and with the least amount of effort (hard leaning forward). In my experience (owning all three wheels), wheel diameter seems to be the determining factor in ease of hill climbing and acceleration.
  24. 4 points
    I have a silly little technique that I use when riding into a head-wind. Realizing that my arms out to the side broadens my 'sail' of wind resistance, I will sometimes place my hands together in a 'praying' position but with the fingertips facing forward. It makes my body more aerodynamic. It seems that this would not provide much improvement, but instead I can actually feel that it does indeed.
  25. 4 points
  26. 4 points
    One needs to consider one thing: Higher battery voltage does reduce current between the battery and the mainboard, however the current between the controller and the motor stay the same, or even increase, as torque is directly proportional to current (higher torque, more current). Unless, of course, they change the motor windings to higher inductance, which would also cause higher back emf, thus the top speed would roughly stay the same as with the 84V motor. But at lower speeds much more torque, with same or even lower current through the MOSFETs, and higher battery stability under load peaks.
  27. 4 points
    Higher voltage allows the batteries to deliver energy faster (= higher power) since batteries are chemically limited in the current they can discharge. With a fixed ("Wh") capacity battery, if you are using more power (i.e., more "W" to go faster, climb higher, be awesome) then you will have less "h".
  28. 4 points
    I could be wrong, but I don't think there are inverters in the wheel mainboards (there's likely a buck-converter to drop the battery voltage into whatever the CPU etc. use, 5V or 3.3V?), the batteries give out DC-voltage and the motor is driven with DC-voltage (using three half-bridges), no need for AC anywhere AFAIK (of course the motor produces a back-EMF that's more like AC?). Gunthor had managed to record the noise spectrums from the KS16, the best guess so far is that things resonate with the PWM-frequency (around 6kHz?) used to drive the mosfets: Spikes around 6kHz + higher harmonics, probably around 12kHz and 18kHz, although someone mentioned 16kHz somewhere? Maybe that was just a misread of the log-scale or the fundamental was closer to 5-5.5kHz or something...
  29. 4 points
  30. 4 points
    I came accross this video It is rather lengthy, but you see all those ninebot riders with backpacks, and a cable leading to the charge-port. The title of the vid suggests a 100km range ... ( I would like to have that)
  31. 3 points
    why nobody pays attention on new mсm4. judging by a photo, it will have a sliding handle, new pedals and light sideways
  32. 3 points
    Update: This "incentive program" has ended. As an incentive to "get the ball rolling" on our new Discord channel I will find a random time in the next 24 hours to credit everyone who is online at that moment (easier to idle on desktop of course) in the Discord euc channel (you don't even have to talk) with 10 forum reputation points. Update: I will credit those who have chat more than 5 lines of non-spam meaningful conversation at any point in the 24 hour period as well. In order to receive the reward you must have a username or nickname that matches your forum name. To change your nickname (if it's different from your Discord account name) while in our Discord euc channel type /nick [your-forum-name]. Please note that nicknames are channel-specific and it doesn't affect your name in any other channels you might be on. This reward thing will repeat every day for several days or until "the ball is rolling" (whichever first) and this will stop. Please note that only forum members that already have at least 10 existing reputation points can be rewarded. If you're under 10 points, then points might be given by discretion. Click this link to get started: https://discord.gg/GJTHZ3r What the heck is Discord?
  33. 3 points
    I'm Brian. I'm 39 and have two kids, 17 and 16. I made a huge mistake and bought a minipro. Then I had to have an EUC. Now, all I do is ride it and use the Minipro to try and talk people into going for a ride with me. I spend a lot of time trying to talk my children into trying the EUC but they won't, because they're pussies
  34. 3 points
    An EUC should be allowed to do at least 25kph imho, otherwise you become a traffic obstacle in urban environments, like those cyclist going 10kph on a sight seeing tour. Also there can't be any hard motor cut out at any speed. A good example even a politican could grab would be a bike going down hill - once it hits a certain speed you put a little stick between the front wheel spokes - now what will happen then? ;9 Instead the pedals should vibrate or tilt a little to inform the rider to slow down with an optional voice notification. I would applaud legislation concerning the EUC lights though. While the front light on the V5F was okayish , the red backlight is too weak. On the KS16-B front and backlight lights are a sad joke. After dawn you cant even see a wind broken branch on the unlit pavement until it is about 1.5 meter away. Also every EUC should have a weight sensor or other means to determine that no rider is standing on it. If a rider jumps off for whatever reason the EUC should not be able to go into oncoming traffic but come to a halt very very quick. If you need more than 1.5 seconds air time on your EUC join the circus Also the riders weight should be measured to calculate the individual window of safe use. A 50/70/90 kg person each should trigger a different firmware mode setup, always depending on the motor power available. Say a 90kg guy wants to have fun with a 350W motor, here you go at 12kph max. An EUC sold for grown ups in Europe has to have minimum pedal sizes (shoe size 11/12), or set of switchable pedals for kids and adults. If a company doesn't comply their product range can no longer be insured in Europe, which means you are no longer allowed to drive around on anything other than private property. I think any car company could come up with better wheels then what we have now, however they have no interest in this market! worse they lobby against us in Europe. In town I always giggle when I see teh walking dead climbing out of their Porsche Cayenne to buy their buns. *oh I got carried away* cya
  35. 3 points
    picture please. scraping the varnish should not be an issue. I have seen people re-wind the stators but I do not know how difficult it would be to just re-wind the damaged coil. it is defenitely repairable but you have to whatch some videos. I saw some of these ladies winding stators for e-byke motors by hand and not even looking down. It looked simple but I am sure it requires practice.
  36. 3 points
    Well not so good news. Before epoxying in the new hall sensors I examined the small sensor openings and the surrounding coil wires as they are in direct proximity. Sure enough I cut two of the copper windings as I was either prying out the old sensors or cleaning out the old epoxy. I could not tell this was an issue until today as I examined the area closely using a magnifying glass. I suppose the 2 copper wires could be repaired but being a strong believer in fate I contacted Ian and he is getting me a price for a new motor. Although disappointed I just tell myself that this not some incurable disease. Just a little ripple.
  37. 3 points
    Sorry for the late reply! Yes it is but progress is much slower than I would like. Finding the time has become a real issue due to all of the spring yard work, repairing an old jeep transmission, painting, repairing broken sprinkler lines and a honey do list that is never ending. I need to start getting into work earlier before seeing patients and get this wrapped up. And now after seeing @Scully's beautiful orange and green wheels I am thinking of painting the ACM as well.
  38. 3 points
    When climbing hill of 20 degree on my Msuper 3 67v, just lean forward to press the pedal is not enough, one has to squeeze the Msuper on the pads using lower leg and bend it forward to produce more demand of torque. I have not been able to over lean the Msuper 3 in this way yet ( at low hill climbing speed). My calculation shows that the pedal length of the MSuper 3 is just driving up a 18 degree incline with reasonable margin for your shoes to press. At speed 0, one can put about 44kg of force on the front -1cm of the pedal. At half of cutoff speed, one can put 22kg of downward force.
  39. 3 points
    My bad... your location stated Canada. Visitor to Canada? Anyways, my statement was purely in response to yours stating that Slaughterhammer doesn't quite understand how these things work. On the contrary it appears that he is quite knowledgeable as far as I can tell from his postings. Certainly there is that possibility that he hasn't a clue and is just making impulsive statements that seem to conflict with other people's opinions on the subject. I will let him defend and explain his statements as they are not necessarily the same as mine. I find that people seem to faceplant at any speed regardless of speed limitations. In addition, one of my main reasons of frequenting this board is to poke fun at people. I poke. It's fun. That is what I do. If you have a tender spot, expect me to be the first to poke it. Now if you're a sexy, non-Canadian female well just be warned. Ima poker.
  40. 3 points
    Now, that would be an incentive to learn Mandarin No, on a more serious note: mere spoken warnings would not be any better - especially with a synthetic voice that always speaks with the same accentuation. After all, there's a reason why we shout or even scream when stuff gets really dangerous. There is a lot more information in a human voice than just words. And a million different tones between a calm announcement and a panicked warning of imminent disaster. In the analog world we are warned by screaming tires and such. With superior digital technology, we got, eehh, BEEPS? Answering machine voice?? Oh, come on. Sorry @Dmitry71, I don't mean to hijack your thread about the new mcm4. I love GotWay wheels and with every new model I appreciate the customary performance improvement and lament about yet another missed opportunity to improve the human interface to the rider. As a performance leader, GotWay needs it the most.
  41. 3 points
    Found some other EUC riders and met up to ride round Southport lake and pier (Lancs UK)
  42. 3 points
    MichealSF, I learned on a $225 'cheapo' wheel off ebay. Tiltback starts at 6.1mph, beeps at 9mph, range 7mi (160# rider). Far as I'm concerned it was a great learning machine. I have better wheels now, but I still got out the cheapo when I started learning backwards. And it's perfect for letting kids (and other adults) learn to ride (slow enough it can't much hurt them, inexpensive enough it's OK for the kids to beat it up).
  43. 3 points
    Only performance and not safety in mind. Gotway/ Kebye is going more and more into a niche market (currently good selling). A 55 kph EUC (OMG) should come with a good quality concept and some safety features to make sure you don't hit the road because of weak design or a PCB/ power system failure. The KV factor of the motor is optimized for speed/ higher rotation. Wondering on low speed behaviour in different situations. I like to see a power/ torque over rotation diagramm based on the maps of the PCB. This values put over in a drive resistance graph would show the story. 100 V looks like, as the 84 V did before, a device is covered by the low voltage directive (http://ec.europa.eu/growth/sectors/electrical-engineering/lvd-directive_en) but not by the General Product Safety Directive http://ec.europa.eu/consumers/consumers_safety/product_safety_legislation/index_en.htm
  44. 3 points
    The 14D would probably good enough for you, but I always like to get something a little more than what I think. That way, later I'm not apt to say "Gee, I wish I would of gotten something a little better". (But then again, that's me.) @Jason McNeil has his warehouse out here in Southern California, so if you order from him @ ewheels.com, it will be delivered very fast. (He's the one that I got my 3 EUC's from.) I don't know though if he has any instock though, so you'd have to ask him.) Allen
  45. 3 points
    If you plan on riding distances of at least 20 miles, I'd recommend you go with the KS16S. The extra 2" in diameter of the wheel and the extra battery power will give you more range and still have lots of power for climbing hills. It seems like 16" wheels are the sweet spot for climbing steep long hills while still giving you decent range as well. Allen
  46. 2 points
    That copper wiring is usually wrapped pretty tightly around the stator teeth so there shouldn't be any loose wires like that. With a break in the wiring, it effectively cuts the circuit to the stator stack so the motor will not work properly. I'm thinking with some careful examination first, one might be able to scrape off the lacquer insulation coating, place maybe some aluminum foil underneath, and solder the wires back together. A small piece of copper for a bridge could be used if needed to solder on to help span any gaps. Sliding some teflon tape under the wire and then applying non-conductive epoxy or other (RED GLYPTOL) insulating laquer could then be done and allowed to dry making sure the underside is coated. The aluminum and teflon could then be removed. Or so I theorize in my mind that it could be done that way... You might want to Google some electric motor repair threads for more info. https://www.rcgroups.com/forums/showthread.php?240993-(Re)winding-and-building-motors-tips-tricks-checks-tests If you have an old electric motor or some of the copper windings, I would practice first on a piece which you cut in two to see how it is to join the ends back together.
  47. 2 points
    Are you speaking about me.... gotcha !! 98Kg. .. .. lol....
  48. 2 points
    I actually decided to buy the V8. Main reasons were that this machine is pretty reliable (strong enough engine for my weight), has the speed that I wanted (30kph), was still portable enough to take on the train. I find cruising that at 30kph in the Netherlands I can still oversee the traffic situations and am in control of the wheel. I actually decided against buying a starter wheel and go straight for the keeper wheel because even if you sell it later on you´re bound to take some losses in money, and if you are careful when learning (protect your machine) you don't get irrevocable damage. Most of my scratches came after I was proficient at driving and actually started pushing the machine. If you care about replacing parts I find that the v8 is really nice, Fineone on aliexpress actually send me a replacement trolley system which arrived within a week, since I was ordering anyways I decided to buy some new side cover plates in case I want to "reset" the wheel to good as new condition. Anyways I'm really content with this wheel as it got me started and I don't feel the need to upgrade yet. Although next week I'll be trying out some different wheels, hope that doesn't change my mind
  49. 2 points
    Mayor of them are hits on rocks, the down side takes a lot. Some of front are from the mini bmx track. You can get a idea from my videos The worst crash I had was with one cheap OnlyWeel who I throw it accidentally down hill against rocks and trees when he decided to shutdown due overspeed. I think the vf5 don't survive something like that without many serious damges. Lights, handles, chasis border and others probably break if hits a rock over 15km/h
  50. 2 points
    Thanks for the advice Allen. I'll look into it