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  1. 25 likes
    I have to admit, I'm very saddened by what I read It seems that King Song has chosen the worst possible way to solve the problem they apparently have caused themselves through the wrong sales and pricing policy. They could simply limit the functionality of the application to basic functions, excluding the possibility of firmware updates - just like it is in EUC World and DarknessBot. Lack of any aftersales support would also be understandable. What King Song is doing by rendering wheels unusable is considered a crime in Poland, where such an act is punishable by 3 months to 5 years in prison (Article 288 of the Criminal Code). I suspect that in many other countries King Song's action would also be considered a crime. Regardless of this, such action also violates consumer protection laws that are in force throughout the European Union. A possible lawsuit in this case would hit not only King Song, but also its European distributors. I hope that King Song will reconsider its actions and withdraw from this illegal practice, especially as it damages not only users but the company itself. @Jack King Song, please do your best to convince King Song management to reconsider their actions. Certainly there are much better ways to fight unauthorized export. At the same time, I would like to make a clear statement: while some of the functions of EUC World are not supported in King Song wheels intended for the Chinese market, EUC World does not and will not block or otherwise interfere with these wheels. EUC World is supported by EUC riders community and developed with users in mind. While I am open to working with wheel manufacturers to ensure compatibility and functionality on current and future wheels, EUC World will remain independent of any wheel manufacturer. I can vouch for this personally. And finally - I strongly encourage everyone to buy wheels from local dealers. Regardless of wheel manufacturer.
  2. 23 likes
    Today I was extremely fortunate (along with my g/f) to meet up with both Jimmy Chang and Chooch in order to try both the prototype versions of the V11 and S18. And not just 'try' them, but I logged at least 60-75 minutes on the V11 and at least 30-45 minutes on the S18 over a three and a half hour window. Some context about me/my perspective: I'm 5'9" & only ~150 lbs, and ride duck-footed. I own a 100v Nikola+, V10F, & V8 with around 4k combined miles spread fairly evenly, and have also logged at least a hundred+ miles on the KS16S & KS18XL which I love about as much as the wheels I own. (And I've tried a number of other wheels but often for only a few minutes here and there.) I'm 100% an urban street rider normally riding in the upper 20s mph in the city, with my priorities centered around ride quality/feel and confidence on pavement at those speeds (confidence=some combination of overall feel & stability, accommodating bumps/potholes, safety headroom, and production values/trustworthiness). Conversely I don't really care about off-roading or jumping (just not my thing)--although I do ride down curbs regularly and am working on riding down small sets of stairs. My experience/takeaways about the V11: The V11 simply *felt amazing* to me both ergonomically and in overall stability & smoothness. I don't know how much is due to the shocks versus the motor/torque versus the tire size versus the weight distribution versus just how it fits my physical dimensions, etc, but the total combination just felt phenomenal--super comfortable, stable, smooth, and confidence-inducing. Also I absolutely love where it hits high on my leg just below the knee, and the outside of the saddle that makes contact with your leg is actually soft rubber, not hard plastic. (My girlfriend who is 5'4", while having an overall positive opinion of the V11's feel, did find the contact point a bit high for her preference/right at the knee. Although then I think for any average height guy or taller it should be absolutely fine.) Taking either suspension wheel over bumps/potholes or off curbs is simply categorically better than any non-suspension wheel I've ever ridden and feels wonderful. It's crazy to bend your knees extra and brace for the impact you're used to expecting, only for that impact to never really come because the suspension did much of the work for you. For my usage just over bumps/potholes and off curbs there wasn't any significant difference between them, they both just felt great and way better than my Nikola or any other wheel I've taken off curbs. I tried them both off-road a bit and just don't feel qualified to express an opinion here. Also I suspect the pressure in the shocks should have a huge impact on the riding experience/changing this should produce a widely different feel for each wheel, and I simply didn't have time to try a wide range of pressures for both wheels to really gauge what was due to the hardware vs what was due to the shock pressure. In the end both were awesome for on-road bumps/potholes & off curbs, and I'll leave it to the off-road people with more time on them to talk about that part. I experienced zero gyro effect on this wheel, while I was very susceptible to it when I first got my Nikola, so I can't fathom someone claiming the inverse. (It's gotta be that people are using the same term to describe somewhat different things?) I found it surprisingly easy to turn for the size & weight and I'm not sure I understand why other than the thin profile & weight distribution? It turned exactly like my V10F and nothing like my Nikola, which is only a good thing. The V11's weight was indistinguishable from my 100v Nikola+, but because of the V11's much better carrying handle, being narrower, and being higher off the ground (requiring me to bend down less) it was actually a bit nicer/easier to lift. Pedal height was fine but I did manage to scrape the pedals once when I turned extra sharp (which I've done on lots of wheels/not particularly unique), so I think another little bit added to the pedal height (as reported on the final production model) would be welcome vs anything to be worried about. The V11 also *looks gorgeous* in person and extremely premium. (Renders don't do it justice.) It looks like a proper vehicle with the top shape and front & back lights and just oozes quality/refinement, and it is even more reminiscent of the Z10 in person. By comparison all the older EUCs present (from all three major brands) looked like toys beside it. Speaking of the lights, and as has already been said by others, both the headlight and taillight are simply unmatched. The headlight is incredibly bright and low & wide and the taillight looks great. Both the carry handle and trolley handle are fantastic. (I've always been a staunch advocate of the luggage-style trolley handles over scorpion ones, but for all intents and purposes the V11 handle feels like a new, third category--it's not really a scorpion handle/way better than any scorpion handle I've ever tried.) The kickstand is simple/limited but nice to have and easily missed when going back to a wheel without one. Obviously my time with it was insufficient to test the range. (Although we did ride the wheels around for like three hours, albeit often at more middling speeds/only pushing higher speeds sporadically, and it was still at 4 out of 5 bars at the end.) Nor was I inclined to push speeds above the mid 20s mph on a wheel that is not mine and which was completely new to me. Some takeaways from the S18: The demo model was really beat to hell, with tons of damage and pieces coming off and frankly it looked like sh1t. (See pictures.) Obviously it's not fair to judge a wheel which has been so abused, but it does indicate a potential paradox. Sure out of the box the wheel looks absolutely stunning, but then what?--you either ride it off-road and reap the suspension's strengths in that regard while sacrificing its aesthetics (as it might not hold up to the abuse)?--or you pamper it on the streets to maintain the pretty aesthetics while sacrificing its primary off-roading strength/usage case, and are otherwise saddled with all the negative tradeoffs (battery, etc) which were made to provide that primary strength which you don't take full advantage of? It's like a wheel caught between worlds and potentially not fully suited for either. (Also I've seen wheels which were abused just as much or more but which held up way better, including the 16X and others.) In the end this might come down to what "off-roading" means to you, particularly how much risk you take/how often you drop your wheel. If you do extreme off-roading where you're going to crash/drop the wheel a ton, you probably want something with stronger casing. But if you ride off-road in places/in a way where you're unlikely to crash/drop it a bunch, then you could get the benefits of the S18's suspension without having as much danger to its casing. The open case was absolutely full of dirt in a million little crevices around a bunch of different little parts and cable channels and things. (Again see pictures.) Even if not necessarily worried about this being any kind of functional problem (it probably isn't?), it just seems like it would be impossible to keep clean/looking decent--as if hosing it off might be regularly necessary, not just from extreme off-roading, but even just from dust from everyday street riding? I repeat the same point I made about the V11 in regards to suspension and dealing with bumps/potholes or going off curbs. Suspension is awesome. Ergonomically the Kuji pads around the ankle were quite hard and dug into and actually bruised the hell out of my ankle (technically above the ankle bone/joint, really the lower leg) no matter how I tried repositioning my foot to try to alleviate (augmented by the relatively narrow pedals/inability to move foot too far outward). It also had obvious wear-through/deterioration of the hard padding on the exact contact point where it was causing me pain. On the other hand my g/f didn't have this problem, and the final production version is supposedly softer, so results may vary? And this may be highly subjective to your physical dimensions and also potentially riding style (duck-footed versus parallel or pigeon-toed, etc). The Kuji pads did make it way easier to squeeze the wheel with your ankle underneath the bump and lift the wheel to jump up curbs and things, as Chooch demonstrated repeatedly, which is difficult if not impossible on the V11. If you care significantly about jumping-by-lifting the S11 is really your only choice between these two. The S18 headlight, while not as good as the V11, is still quite good compared to previous-generation wheels. The taillight is very slim/tiny and I would fear may be insufficient for visibility (likely why at least the demo unit also had reflective tape lower on the back). Glad to see the broader set of manufacturers stepping up their headlight game though. The trolley handle is great as a trolley handle (I wasn't sure with it being rotated 90 degrees from most handles but actually this didn't hurt it at all) but its double-duty as the only carrying handle which you have to finagle to lock into the lifting handle position is abysmal. I can't overstate how big of a deal this is in usability, it's really annoying. (The demo unit also did not have a working cutoff switch but which I can ignore/assume should be fixed in final.) In the end I'm buying a V11 and selling both my Nikola and my V10F--it combines the strengths I personally want/need/love/use from both, and having the V11 I don't anticipate I would ever ride either the Nikola or V10F. (Conversely I kept the V10F after buying the Nikola because there were things I liked and disliked about both and I would use each of them for different scenarios. But I will certainly still keep around a V8[F] or mten3 or equivalent because I still love having and regularly use a compact & light wheel for some things.) This is just off the top of my head and I'm sure I'm missing stuff. Feel free to AMA. And *many thanks* to Jimmy Chang & Chooch and be sure to check out their videos on these wheels as they come out. :-)
  3. 22 likes
    I'm happy to inform you that Inmotion V11 support has been added to EUC World. New, 2.0.0 release is now available on Google Play.
  4. 21 likes
    I'm very impressed with the build quality of the V11 and the amount of metal in it. Everything that holds your body to the wheel is metal. The plastic only servers to contain the batteries. And the simple way that the side saddles attach to the wheel make it possible for easy user created sides to be installed for a totally different look. So, @Liam Zeng came through with some more ideas and we fully recovered the V11. It's back in the game First solid ride will be tomorrow.
  5. 19 likes
    This Thursday I'm going for another, long trip - 400 km in three days. This time, however, instead of the King Song KS-18XL, I will take Inmotion V11 which I received for testing and EUC World app development courtesy of @EUniCycles.eu. We will find out if the V11 is a worthy competitor for the KS-18XL when it comes to long, multi-day trips. And who knows, maybe the V11 will beat the KS-18XL in this area? I'm sooo curious...
  6. 17 likes
    A rare Sunday FedEx delivery. The V11 has finally arrived. I've really been looking forward to experiencing the suspension ride. Range tests, heat tests, and lots of trails. Can't wait.
  7. 17 likes
    Actually there is no problem using TO-220 in a 2 kW power inverter. It's common case in high-reliability industrial devices. For example single IRFB4127 MOSFET can continuously handle 76 A at 25 deg. C and 54 A at 100 deg. C. Sherman uses TO-247 and Marty was able to fry the mainboard. The key is correct mainboard layout design and thermal management. Twenty TO-220 MOSFETs are more than enough to drive a 2 kW motor with decent safety margin. V11 mainboard layout looks far superior to Gotway/Veteran, at least in high-current paths. I made several steep uphill/downhill tests last days and wasn't able to overheat this wheel. V11 is equipeed with two temperature sensors. First measures mainboard temperature, second measures MOSFETs temperature (I suspect this sensor is attached to heatsing near the MOSFET case). In my last test MOSFETs reached 115 deg. C (240 F). Fan started at 70 deg. C. No wheel warnings, no tiltbacks, no other signs of overheating. Anyway, I think there is a problem with V11 firmware. 115 deg. C should at least generate some warning about risk of overheating. Because there is always a non-zero temperature difference between transistor junction and heatsink and usually transistors are rated for max. 175 deg. C of junction temperature, 115 deg. C of MOSFET case temperature is high enough.
  8. 17 likes
    With about 50-miles under my belt, in my opinion suspensions will become the new standard within a year, like 3-inch tires are the new standard. The V11 suspension is amazing - I love it. You still feel all the bumps but the harshness is eliminated
  9. 16 likes
    Yes sir. How close are you? So here it sits. No screws appear missing. In fact it came with bag of extra screws with @ShanesPlanet name attached.
  10. 16 likes
    Also for those that don't follow Inmotion on telegram, Liam posted some pictures of new add-on options off-road pedals. They are starting to do jump pads development next week too. I will update this post with a copy of the pictures...hold on.
  11. 16 likes
    I have to say, based on my experience, that V11 may become a new king of EUCs that best fits for long-distance, one- or multi-day trips. For now KS-18XL is the king in this regard, but this may change. I just returned from a fifteen-day trip on King Song KS-18XL, during which I rode for over 2 000 kilometers, with 20 kilograms of equipment on me. It was another of my long-distance expeditions, during which KS-18XL managed well to cope with the worst conditions, such as all day long riding in heavy rain. Now I'm thinking about going on a similar expedition and ride for over 1000 km in one week - this time on Inmotion V11. It would give the answer proving if Inmotion would take King Song's crown away.
  12. 16 likes
    Don't worry about the warranty. Our distributor will offer the decent service you deserve. Please contact them about the broken part. But the only problem is that not all accessories are well-prepared. We will keep pushing the process to stock more parts and ship it to our distributors. We will fix the screws issue start from the second batch. As for the first batch, the new screws will be sent to you for free.
  13. 16 likes
    headlight comparison: 16x on the left v11 on the right. A good example of how the headlight doesn’t blind pedestrians.
  14. 15 likes
    I love how they say it's fixed when they have no idea what failed on my board. That really is an impossibility. Just like I surmised, Inmotion would say the production wheels don't have any problems because it's a different board. And we are supposed to believe them without knowing what changed. Would anyone fly on the Boeing 737 MAX without know what Boeing did to fix the original problems? It's magical thinking
  15. 15 likes
    Oya? Really?? What if your iphone or whatever phone gets locked after u purchased it legally? Would u ok if the mfgr says well we lock it cos u didn't buy it at the locale they desired? Incase we are unaware, its my property once its legally purchased. MY PROPERTY! NOT KINGSONG'S NOT THE CC Company I used, NOT MY NEIGHBORS & DAMN WELL NOT ANYONE ELSES! Who da hell gives anyone the right to lock my property??? I can understand such legal punitives if the product is PROVEN stolen but otherwise, ITS MY PROPERTY! I REST MY CASE
  16. 15 likes
  17. 15 likes
    Finally after 5 weeks of painful waiting, it has arrived! I will skip the common known issues already reported by others (inefficient at slow speeds, lack of low end torque, poor LCD cover glue, motor sheath deforming/melting, pedal dip) contrary to @Marty Backe experience, my wheel fully charged to 101.0V with no issues. It also had a 106.3 kmh no-load speed, consistent with others. I switched between soft and medium mode, and found that medium suits my riding style best with a slight dip which assists while weight shifting, without the disorienting backwards dip of soft mode. Hard mode feels very much like Nikola soft mode (which isn’t all that soft to begin with). My 60 mile ride left me with 84V remaining, and given low battery tiltback is at 76V, I believe it had at least another 20 casual miles in it. I will be doing an even longer range ride this coming weekend with higher sustained speeds to see how the Sherman holds up. What amazes me about this wheel is that Monster-like feeling of being sneaky fast. i thought I was going 20-25 mph but looking at my phone, i was actually traveling 33-35 mph. I will be giving the wheel another 40 miles or so before I push it north of 40 (My top speed was 39.6 mph tonight). The motor whine is irritating at speeds below 20 mph. It is reminiscent of old school Kingsong wheels with that annoying whistling sound, which makes me want to push this wheel simply to get rid of that noise! The weight isn’t as big a deal given there are two handles to lift it by, aside from the awkwardness of lifting it that way. I actually found it easier to lift than my 70lb battery modded Monster 3 given the weight distribution. My wheel arrived with no valve stem cover, or pedal nuts! Luckily, I had spare pedal nuts from a spare set of Gotway pedals, so I wasn’t left being unable to ride. The tire takes some getting used to, but within 15 miles I was aggressively carving and comfortably handling the wheel. The soft compound really absorbs some of the worst road conditions NYC has to offer like a champ. Road noise aside, this is an excellent tire choice, in my honest opinion. With that said, there is absolutely nothing out there that can mate a ~50 mph top speed with 80 real-world “fast” miles. The issues found from the initial run of Sherman’s appear to be identified and corrected for the eWheels initial supply, but I do fear there are some compromises given the change in firmware logic based on feedback. I, for one, do not wish for any firmware changes; they designed this wheel for the street, not off-road (contrary to its utilitarian design). I genuinely hope they do not make any knee jerk firmware changes because it would be a shame to ruin what may potentially be one of the best riding EUCs ever made to date. There is no such thing as a free lunch. You can’t magically make a motor wound for speed have MSP torque to tackle overheat hill. Just understand this is NOT the wheel of choice for those use cases. This is a street demon, plain and simple. If you crave speed, range and stability in a single package for the street, you would be hard pressed to find any real alternatives currently.
  18. 15 likes
    She hasn’t found it yet.
  19. 15 likes
    EDIT: Videos being trimmed
  20. 14 likes
    Thoughts after first ride on the V11: Absolutely amazing! The suspension is way better than I expected. We had two wheels with different settings. I had less pressure on my wheel and it was just perfect. The bumps just disappear and you don’t need to slow down for obstacles. I can keep much higher speed on rough terrain. It’s just so comfortable. The other wheel had slightly more pressure and it was good also, maybe a bit sportier feel and the bumps felt a bit more. Really a matter of taste and terrain. Wheels without suspension are obsolete now. You really have to need some specific feature to pass a suspension wheel. And I don’t really care about the comparisons. If the V11 suspension is this good, it just doesn’t matter how it compares. Either the S18 suspension is from another planet or the difference is very small. I will have a chance to compare both tomorrow. And the light is just spot on. The handle is perfect. Build quality is something that I haven’t seen before on an EUC.
  21. 14 likes
    I've heard they are changing their brand name to KingLockSong to better reflect the new approach Couldn't insert the leaked video promo for some reason but it says here: "LockSong GEO18 - ride it anywhere within your backyard" 20208134320 2.mp4
  22. 14 likes
    I work for a manufacturing company as the channel sales manager. This means that I am in charge of our global distribution network and I work on a daily basis closely with our distributors, supporting them in representing us in their local market. It is a tough challenge dealing with a global channel as every country / culture is different. Pricing is just the top of the iceberg but that seems to be the main beef for KS and their EUC's. Every territory / country has a different price level, mandated (by law) minimum warranty, service requirement, etc. It is extremely hard for a customer (consumer) to know the intricate details that every country has imposed on them. We as a manufacturer work closely with the distributor and adjust our transfer pricing (dealer pricing) depending on the local circumstances in said country. This ofcourse directly translates to a different "street price" for each territory/country - we aim to keep the MSRP the same as even a global economy has some degree of transparency to it. With this being said, I think I have a good understanding of the challenges that KS is going through. Their products sold to local distributors in China were never ment for the export market and I understand their frustrations with them. However, they (local retailers like chicway etc) are not the cause for the actions that KS has taken, it is the international distributors who are complaining to them that they can not compete (with pricing) with these retailers. It is a petty argument, as the international dealers should compete with what they have in their tool bag, which is warranty, service and support. What KS is doing by locking wheels is both illegal and reprehensible. I would caution them to continue the practice, as the word will spread very fast. Not every 1st time buyer is even aware that this forum exists or that the "official" channel for KS communication is facebook, so the consumer is unaware of this (illegal) policy that KS has put in place. What I would do if I were KS would be to develop other ways of restricting the wheels to certain markets. It is for example totally legal to have the wheel check for a license to be used. with said license you can then control functionality of the device, for example locking the top speed of the wheel to 15 km/h if it is not valid. The license can be set to be annually renewable, which means the customer / end user has to renew the license through official channels. If you are a resident in Europe, get it from an authorized European distributor, same for the US etc. --> this is how you can protect your local distributor as they can then generate revenue by selling licenses that expire, and the customer would be aware of this and can thus take it into consideration when purchasing a new / used wheel as the license fees would be known / published numbers. If KS continues to illegally lock their wheels remotely, then it will end in their demise as people who otherwise love their wheels bc of features / looks etc will stay clear of the brand. The situation for KS is in my opinion still salvageable, but it would require an official apology both here on the forum and on facebook with clear instructions how affected customers can contact official KS support to get the locked wheels unlocked.
  23. 14 likes
    S18 range test with a 155 lb. rider
  24. 14 likes
    Hi guys ! After owning a Tesla V2 1480Wh for a few months but only starting riding it recently, I think I can finally share my thoughts & hopfully answer some questions about technical specifications regarding the custom battery. Let's start by why I wanted this TS2 and not the 1020Wh. In 2017 I owned a Tesla V1, the first generation, first batch. It was a great EUC, performant and had useful stuff for the city (trolley handle..), it was also at the time the most silent Gotway on the market. After testing and/or owning more recent EUCs, like the Nikola +, MSX, Monster V3, KS16X which are fantastic EUCs to ride bringing a comfort level not possible with older generations, I wanted something more "old school" regarding the handling, something agile, not too heavy but that still had a great range. The ACM 1600Wh that I owned was like that, but it's an old EUC and it's no longer produced, so this TS2 1480Wh was a no brainer if I wanted something that could be almost as portable as my V8 but with much longer range. Before talking about how it handles, how it performs, I need to talk about the battery. I of course heard about some bad custom batteries that could in some conditions take fire, I also heard about some sellers maybe using used cells in their custom battery. Of course I asked the seller how is the BMS & cells, he said they were new & BMS had balance like any other BMS, bit I wanted to make sure. I had some people look after it, and also @LaserEdge , and my conclusions are that despite being a different design from gotway BMS, it's as good as gotways. It has a balance function, it protects the cells from over & under voltage. Regarding the cells themselves, they seem to be fine and not used, the references are li-ion NCA 21700T 18.5Wh, there are 80 in total (40 in each pack). My conclusion about the custom batteries is that they should last long and there shouldn't be more issues than with traditional gotway batteries, but I would still be very carful where I store the EUC and when it charges in order to prevent damage to you or your goods in case a fire would occur. Now about the Tesla itself. It's not exactly the same as the other TS V2 I have seen so far. Why ? Because the speaker is different. It seems to be the same speaker as the ones on the MSP, it is not facing outwards through the speaker hole on the right side but it's facing inwards, to the motor. So far no issues but. Also the speaker hole on the shell on the left side could let water through so you need to at least put some tape on it, it's a little design flaw in my opinion. The speaker itself produces some "OK" sound, it could be a little louder because it's hard to hear if you go above 18mph. I don't use it much but it's good to know it's here if I need it. The cut-off switch works perfectly, some riders said to me it's a little loose but it does it's job. The front light is the same as the ones on the MSX, I would have liked the same as on the MSP or the Nikola. Still no rear light, I personaly added a rear light that is wired to the board so I don't have to think about charging an external light. Even if the light rings on the side can be seen from behind, I think that during night time this isn't enough for safety and I would have liked to see an improvement here. The trolley is still the same as on the V1, I like it. It may be a little short for tall people but for me it's fine. Pedals are now colored in black like any other gotways, they are 13cm above the ground, so a little higher than on the MCM5 for example but still you will probably scrap them in sharp turns. Now for the best part : how it rides ! This is where I love gotways, where they shine, and this TS2 is no different. Acceleration is powerful & smooth. The acceleration I got on the Tesla V1 is a little less than on the V2 but maybe I improved my skills. It does feel a little more powerful, control board is supposed to give a 30% increase in power, I can definitely feel it. Something new is that it beeps around 43kph/27mph when the V1 beeped at 47kph/29mph, but from what I've seen is seems that the safety margin is just bigger and that the top speed is around 54kph/33.5mph (but not recommended at all). I don't ride above 30kph in general so it doesn't matter to me. For comparaison, the Nikola + I had accelerates to 25mph in 3.59s, MSX 84V in 3.81s and this TS2 in 3.51s. The main difference is that I don't have to lean as much with the TS2 because it has a smaller wheel diameter and it's lighter. The motor is very silent (as much as a Nikola), it has no vibrations at any speed (I had some on my MCM5 & MS3) it's a 1900W not 2000W, but it's more than enough for most riders who need a great city commuter. The best thing about this TS is that it handles like a charm. It is very easy to turn, almost no effort is needed unlike on bigger EUCs with "3" inch diameter wheels. The added weight compared to the V1 (about 2kg) is not noticable at all, it seems to be very balanced. The lower pedals have the advantage to give better stability at very slow speeds, making it easy to travel at walking speed, very convenient when you are in a flow of pedestrians. The range is...excellent. With my testings as was able to get, at about 20kph/12.4mph speed 120km/74.5miles with 11% battery. I had a little headwind. Of course for long rides this EUC is not as comfortable as bigger EUCs with big wheels, or with suspensions or both, but it's not meant to be. I think that this is an EUC you get to have a great city commuter, that you can take with you in any store, in a car or a train, conveniently. You get a good speed, good breaking & acceleration performances with a very agile machine and you can still occasionaly go on longer rides. I would not recommend this TS for someone who want to do 50+ miles rides all the time, it can do it but it's not as comfortable. To summerize, this TS2 1480Wh is an EUC that is meant to be ridden in the city. It is great for those who want an EUC that you can bring with you everywhere with ease. It can be a great upgrade for a KS16S, KS14S, ACM, Ninebot E+...for those who want good range out of a city wheel with the traditional 16x2.125 tire. It has all the things you want from a city EUC (speaker, cut-off, trolley, usb port) and it's minor design flaws are easy fixes. The custom batteries seems to be well made (don't take my word for it however and still be very careful especially during recharge) and should be long lasting. I love this EUC after more than 500km, it's my go-to EUC, but of course no EUC is perfect and like I said, it's not meant for long journeys despite being able to, it's your pocket all-in-one EUC !
  25. 14 likes
    Motor Repair (or not) Today (Sunday) I received my Sherman repair kit. Lots of parts, etc. but the main item is the control board. I was sent two, and told to use the one on the left first. Why? I'd love to know. I've asked, but haven't heard yet. As the test dummy I'd at least like to know what feature I'm testing that's different from the other board. Otherwise, I see no difference between these and the original board. In prep for installing the new board I started inspecting the motor cabling more closely In the following picture you can clearly see how much melting occurred. This was repeated in three places So then I peeled back the cabling as they are exiting from the axle. Here you can see the blue and green wires are fused together The cables are not shorted but obviously I have no idea how much margin exists here and further into the axle. I'm not willing to risk riding with this motor as is. So I opened the motor as seen in this next picture. I thought perhaps I could remove the three motor wires, add the provided wire sheathing, and re-route the wires through the axle. After looking at this I've decided that's a task best done while the motor is being assembled. They insulated the wires inside the motor but not as they pass through the axle. Obviously a weak spot if the motor is going to be stressed. So now I wait again to see if a new motor will be sent to me.
  26. 14 likes
    Failure Postmortem Today I disassembled the Sherman so that I could remove the control board and take a closer look at the damage. Sadly, total disassembly is required to pull the control board. I think Veteran assumed that they would have no control board failures. Considering how easy it is to do all other work on the Sherman, the work required to replace the control board is disappointing. All the MOSFET's are destroyed, but it looks like the massive amount of current coming in from the batteries literally vaporized that section of the control board. It could be that the MOSFET destruction was secondary to the melt-down that occurred at the battery connections. All the wiring external to the control board looks great and I see no evidence of heat stress
  27. 14 likes
    The pedal height is a non issue. I rode 30 miles today off-road and had no control or sliding issues. At first they felt high but I’ve got used to it already.
  28. 13 likes
    I am appalled to learn that Kingsong has resorted to attacking its customer base in order to rectify management problems it has with its local dealers. The products being sold by Chinese dealers have all been supplied by Kingsong under arrangements between Kingsong and the dealer - the customer is not involved. There is no law against shopping internationally. On the contrary, it promotes trade and competition. eBay facilitates purchases from around the globe at the buyers risk. No one purchasing from an overseas supplier expects any after sales service beyond the replacement of incorrect, faulty or damaged goods on arrival, and any additional warranties offered by the supplier. Deliberate sabotage of goods or services by a manufacturer or producer is unconscionable conduct and must be condemned. Similarly, denial of service by a manufacturer for products which are not discontinued and have not not reached their end of service life, is reprehensible. Both the manufacturer and its dealers/distributors are able to charge for service and support in the absence of any prior warranty undertaking, as upon the expiration of warranties, unless the product can be deemed not fit for purpose. The arbitrary locking of an EUC by a manufacturer would certainly render the product not fit for purpose, let alone the legal ramifications of interfering with the rightful property of another party. The manufacturer and its dealers/distributors do not retain any ownership of goods after the sale is concluded, and have no right to take control of the sold goods in any shape or manner, without the prior consent of the owner. Kingsong's action in locking an EUC without the owner's consent is illegal and dishonest, and needs to be called out in this forum. Kingsong, like any other hardware or software developer, has the opportunity to end support for a product with reasonable notice, and has the opportunity to restrict the use of its software updates. However, to deny, limit or remove the only means by which an EUC product can be natively operated or controlled, after the product has been legally purchased, is to deliberately render the product unsafe and not fit for purpose. Any manufacturer contemplating such unlawful, discriminatory and detrimental, if not criminal, action should be repudiated and their products should be avoided.
  29. 13 likes
    On my way to starting point... 😎
  30. 13 likes
    From my riding of the V11 so far, it has amazing low-end torque. It "pulls" you up hills vs you "pushing" the wheel up. I've had independent confirmation of my description by a 230-pound rider during my demo ride a couple of days ago in the mountains of Southern California.
  31. 13 likes
    I'm getting the wheel Sunday so we'll find out. If it's anything like the V10F I doubt that it'll blow up, but it could overheat.
  32. 13 likes
    The motor has some torque no grip with the tyre on that terain though
  33. 13 likes
    FWIW, this negative air chamber was secretly added last minute somehow. Because as you can see here in my photo this we just a screw on my pre-prod unit... as least that’s how it looked when i unscrewed it:
  34. 13 likes
  35. 12 likes
    The newest version now ships with two fans. One for each hand. When your riding you can fan the PCB enclosure from both sides.
  36. 12 likes
    Here is my implementation for a seat on the V11. Having probably ridden at least 30-miles while seated on this wheel, I'm prepared to say that it's my most comfortable wheel yet made for seated riding.
  37. 12 likes
    This thread is wild... you guys pushed me over the edge. I am now selling a 1970s Longines watch From my collection to get a V11. When the conversation comes up with my wife, I’m directing her to this thread.
  38. 12 likes
    After a first day of my long-distance tour I have two observations: Suspension is very sensitive to air pressure. Before starting, I pumped both springs to 130 psi and it was good for my weight. For the first 30 kms of my ride suspension was working good. But after that distance I started to feel like a springs lost their pressure. Unfortunately I left the pump at home, didn't expecting any problems here. After about 100 kms of my ride I was able to buy an airspring pump and check the pressure. I was surprised that one of the springs was at 110 psi and other at 120 psi, so apparently small loss as I expected it to loose half of the initial pressure or so. So I decided to pump it to 150 psi and continued my ride. Soon I realized that 150 psi is way too high, as springs were way too hard. Again, no suspension So my conclusion is that you have to get the sweet spot precisely for your wheel, your weight and your preferences. And even just few psi of difference matters. V11 seems to inflate speed and distance readouts by about 9 %. After my first day I've rode for 150 km according to GPS and 161 km according to EUC. And I spotted this just after starting, as I set my speed alerts to start at 26 km/h. I just wanted to make this test at maximum legal speed that is planned to be enforced in Poland for PLEVs on public roads. This is also a good compromise between riding time and energy efficiency, so I can get decent range and save time on charging breaks (as V11 can be officially charged at 5 Amps max in total, 2.5 Amps per port). Just after departing from railway station I felt that I'm getting 26 km/h prealarm too early. I started to verify EUC and GPS data (it's easy with EUC World as you just need to swipe up/down on speed gauge to switch between GPS and EUC measurements). After some kilometers I was sure that V11 adds about 10% to speed and distance. And no, it's not a tyre problem as it's brand new and pumped quite high (as a side note - I have to reduce tire pressure to get better handling). I'm running the newest firmware. It's very easy to spot the speed difference by looking at the speed chart of this tour record - https://euc.world/tour/589182265377351 - notice that brown EUC speed is higher than green GPS speed. Normally they should overlap.
  39. 12 likes
    In about three hours, I'm going to go on a long-distance Inmotion V11 test ride. I'm gonna spend the whole day and two more days on a 400 km route, of which today I'm going to ride 140 km. So you will be able to watch the progress of my test live, on the map of EUC World (for example from my signature image). I must admit that the V11's low battery behaviour worries me the most, but I will see how it really is today. Fortunately, I was able to add all the settings/options of V11 to EUC World app, including activation of "go home" mode. Earlier I updated the firmware to the latest version, and the wheel I'm going to use is the first production batch. So we'll see if there's anything to be afraid of and if I'll get my destination riding or if I have to push the wheel looking for a charging place...
  40. 12 likes
    Range test 👍👍
  41. 12 likes
    custom vinyl film makes it look so cool
  42. 12 likes
  43. 12 likes
    Just confirmed with our lead of the app team, the demo wheel is not supporting the new firmware. We will sent the older firmware to Marty tomorrow so he can run the hill test soon. @Marty Backe
  44. 12 likes
    Personally I don't think that insufficient thermal management is a key problem here. From my perspective the main problem is with PCB layout that is not capable of handling high currents. Marty's board didn't failed because of MOSFET overheating, it was destroyed due to some short-circuit that caused severe arcing, leading to another, cascading short-circuits and finally catastrophic failure of entire board. What caused initial short-circuit? We can only speculate. Maybe excessive current flowing over soldered wire-to-PCB joint caused solder to melt. Melted solder could move under wheel vibration and create a short-circuit. There can be many weak points that will enormously heat up under high current condition.
  45. 12 likes
    Well, Veteran is using the same approach as Gotway - there is no dedicated temperature sensor. Instead, they just read temperature of MPU6050 IMU chip (the "gyro chip") that is located just below Bluetooth module (see picture below). Gotway and Veteran doesn't really measure MOSFET or heatsink temperature, but mainboard temperature. This is why both wheels may seem a "cool running wheels", but this is misleading. Veteran cooling is better than in Gotways, because Veteran is using two centrifugal fans blowing directly at MOSFETs. In case of Gotways, there is just an ordinary axial fan that is mostly blowing onto the top of mainboard, cooling IMU sensor in first place (actually this is why fan in some Gotways repeatedly turns on and off in a rapid succession). This leads to make mainboard cool quickly while the MOSFETs may be near to overheating. Using IMU temperature sensor isn't a sufficient to maintaing proper thermal management. For example King Song are using separate probe that is located close to the most hottest MOSFET (the one far away from cooling fan). Another example is a Ninebot One S2 that have a separate temperature probe that is attached to the heatsink.
  46. 12 likes
    Cut-off on EUC is painful ,annoying , and unpredictable. And now, there is no black box for Electric Unicycle that can monitor and record what's going on out there for a cutoff. After discussion with our engineers, there are some self- dignosis procedures can be taken by yourself.(If you are not suffering from severe crash or faceplant, we suggest you to take a deep breath and run these diagnosis. ) How to dignosis on your own? First, after cut off, please check the battery indicator and see if it’s working. If it's working, please check out if it's balancing. If not, please check out the tire is able to spin. Second, reboot the wheel if you can, and check out if the wheel can be ridden again. Then, please let us know. You know where to find us. Marketing@imscv.com Service@imscv.com I'm upset to every fall and cutoff, and thankful for every case you guys reported to us. With more case reported, possibly, they will no more cutoff case on EUC. And everyone can benefit from it. Before that, don't forget to gear up before you ride. That's a must for any rider. Thanks Liam from Inmotion
  47. 12 likes
    OK I was going to put this in the Gotway section but thought I would put it here in case other wheels use the same or similar capacitors. I was going to wait a little longer before I made this post as ideally I wanted to strip the board first but rather than hang about I wanted to post what I do know, as I would hate to hear of any riders suffering an injury due to my delay. The scenario is this: the wheel in question is a Gotway MSX 100v 1230Wh. It was purchased around 2.5 years ago and had faultlessly covered some 5500 miles. At the point of failure, the speed was around 20mph on flat ground at a constant speed with very little wind. This wheel has been used hard throughout it's life, and was being pushed hard only minutes before the failure (thankfully) as it could have been a lot worse. The wheel suddenly lost balance. No warning, no beeps, nothing. No bad smells, smoke, pedal dip or anything whatsoever to suggest there was a problem. Quite nasty injuries were sustained. After the crash, the wheel powered up (I don't know if it was still on or needed to be turned on) and balanced no problem. A tentative push around by hand seemed to show all was OK. It was then ridden around at walking speed no problem for about 5 minutes. Much head scratching ensued. A thorough look around the surface where the wheel lost balance showed no suspicious dips, bumps or anything. Smooth asphalt path. The rider gingerly got back on (we can argue all day that he maybe shouldn't have done but there we go) and continued at around 10mph for 500 meters or so and then it shut down again, same scenario, and a few more additional scrapes. At this point, the wheel was deemed totally unfit to ride and the rider was collected by car. the side panel was removed at scene and one of the caps was found to have blown (pics below) which at this time is believed to be the culprit. No other damage can be found on the board but as I say I cannot be 100% confident on this until I strip it down to inspect the FETs properly. The point of this post, and following reading up of caps in general, is that the capacitors used can fail at any time without any wheel warnings. Reading up, it seems that these type of caps can 'dry out' over time (greatly increased from heat during use) and the No1 tell-tale of a cap on it's way out is either bulging or splitting of the end seal, although they can discolour or bulge anywhere on the body. As you can see, the cap in question has 'burst' it's end seal, although the swelling very likely started gradually some time back, maybe months. So, I ask anyone with a high mileage or old wheel, please take your side panel off and visually inspect the caps, with a magnifying glass if needed, and see if there is any swelling whatsoever of the caps. The ends should be absolutely flat, the burst seal totally intact, no signs of discolouration and no swelling anywhere. For me, this will now form part of my periodic inspections and in any event, I feel that either the board or at least the caps should be considered 'lifed' and replaced every 3k miles or so to be on the safe side. This failure could have ended so much worse, and the rider is incredibly thankful for that. The only possible indication that has been brought up that something wasn't right before the failure was that the wheel was losing charge - very slight - about 0.5% a day if that - but it was put down to the cells simply being old and very well used so nothing more was thought about it. Maybe the cap was leaching power prior...? A new board has solved the problem and there doesn't seem to be any more battery drainage issues. Finally, I have since heard from a respected dealer that he was actually aware of this possible cap problem on older/well used wheels. I believe that as we start seeing the mileages rack up on the older wheels, we will undoubtedly start seeing more problems. Please keep your eyes on this issue. Note that the other big capacitor does have a worrying 'star burst' looking mark on the shell (I will inspect this more clearly when I get the board, although the end seal did look fine in other pics), and of further note is that the smaller capacitor does appear to have a slightly opening end cap as well..
  48. 12 likes
    The manufacturers should simply take a completely different look at this situation. I appreciate that in general there is only so long that something can last at max power, but we are so far from that scenario it's not funny. Work out how much power the batteries can supply and the motor can take, then design and build your hardware around that. Massive PA sound systems don't meltdown after 10 seconds at max volume, road cars and motorbikes don't self destruct in minutes at full speed, you just need to build your design with enough headroom. Yes we can argue that Overheat Hill to some would seem 'outside of operating design parameters' but I would disagree. Road vehicles are tested to extremes of temperature and conditions for extended periods before making it to production, a failure on a steep hill is not acceptable IMO. If a person can physically ride it, the EUC should take it. As I say, I appreciate that everything has a limit, I would not expect an EUC to make it to the top of mount Everest, but I do expect more than a couple of minutes. If they cant manage to make the hardware, stop putting out wheels with such monstrous battery and motor specs because it becomes pointless. No, I would never tackle anything like overheat hill but given the destruction seen there after such a short period of time, I cant help but wonder how much heat would be generated at extended 40+mph rides (which I may do if I had a Sherman). These EUC manufacturers need to employ someone from Tesla, Marshall Amps or hell even the Eurostar to understand how to heat manage and build headroom. Failing that, simply stop making wheels where two thirds of the wheel is capable of 5x what the other third can take.
  49. 12 likes
    No need to over-react.. why does every little hickup have to be followed with a threat to cancel ones pre-order? pedal height too high - cancel pre-order negative chamber adjustment not disclosed - cancel pre-order plastic piece and a couple of screws missing on 1 wheel - cancel pre-order get a grip folks and trust the process.. first batch wheels will have challenges, you trusted your gut when you pre-ordered, dont chicken out now and dont threaten to do so. If you feel that is whats best for you, by all mean go ahead and cancel... but dont spread your panic here.
  50. 11 likes
    In these unprecedented times it is especially impressive that a group of engineers leave Gotway to go out and start a new business. It appears that on their first wheel they have done an incredible job of making a solid all around wheel based on feedback from people that I respect in the EUC community. Some of them said it is the best wheel they have ever ridden. I came to this Veteran thread to decide whether to buy the wheel or the New Monster Pro and after watching Marty's review as well as all the others I think I am comfortable. I am sure that Marty is still comfortable with is decision to put a deposit on the Veteran.
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