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Showing content with the highest reputation on 06/18/2017 in all areas

  1. 10 points
    (If it looks like not all pictures load, reload [F5] until they do) BIG BATTERIES ARE AWESOME! Electric unicycles are awesome! ACM is awesome! Night rides are awesome! Did a 57km, over 6 hour (including breaks), mostly unplanned ride. Here's the story: So yesterday, after mignight, it was so hot I spontaneously decided to do a short night ride to cool off. Well, not so short as I went for a scenic church on a foothill at the base of the mountains, 15km from and 350m above home. This one (pic from Wikipedia): Mountains where you see them (and to the left), valley to the right of what's in the picture, 350m below you, great views! Being 1am, it was dark night though (so not too many photos here, and a lot of text). Only the ACM's meek light to see the ground before you when there were no street lights or other illumination. The first theme of the ride (in hindsight) is, "Wait, is this path getting even worse?". First started when, after riding through empty streets, doing a small detour along a lake. The path quickly went from farm road to overgrown footpath to dodging and curving around trees and their roots on wavy terrain (as well as collecting surprisingly many spiderwebs with my face), with the lake and whatever canals to the sides. You can't see them, but you hear there's water when a frog jumps into safety or there's a little splash here and there. But with an electric unicycle, easily done, and fun. After a while, I reached paved roads again. On it went, on deserted streets, through fields, or right through villages, nobody to be seen. Night rides have their special quality! And it was nice and cool. Upon reaching the base of the mountain, my personal new hobby began: worrying about my motor cabling and the current produced. Inclines were quite steep, 15% in many places, 20A says the specification, 30A or 40A says the wheel when going up. Oh well! This can be done by doing breaks every few minutes, to prevent possible overheating. Took very many screenshots of the Wheellog current chart on the way up [more about that topic some other time]. Besides this, the rest of the ride uphill was fantastic, through pitch black forest, through meadows with the lights of the valley below you, passing neat farm settlements along the path up. On a nice, smooth road. Finally reached the destination, on the ridge of the hill. The church is on a small elevation above the street, a big tree next to it, with a bench under its branches. Great views of the valley, lights of the villages and Autobahn laid out before you, the faint silhouettes of the mountains behind you in the dark. Unfortunately, neither my phone nor the old camcorder I took with me could make a decent picture (the latter gives you nightvision pictures though). Phone pic of the view. Same view. Camcorder pic of the lights in the valley. Well some of them. I expected the church to be spot-lighted as it usually is, but it was not. Second theme of the ride reared its head: "This is more creepy than I expected!". Very dark, cold wind from the mountains, and as customary, a cemetary with the church. The entrance being a few steps behind the bench I sat on. While my naked eye could see nothing besides a tiny candle in there, thanks to the flash, here are some official creepy-vision pictures for your enjoyment. With ACM, of course. Phone pic with flash. These are the kind of pictures where you photograph into the darkness, and expect some undead staring back at you once you look at them later. Fortunately, didn't happen Relaxing in the dark. After some time trying (and failing) to get decent pictures of the lights in the night, I continued on. It was 2:30 am at the time. Being on a ridge, I rode the road along it, to a small chapel with a view similar to the church. Didn't stay long as the wind was howling there and there were people not to be disturbed, so no pictures. If you're wondering, there are a ton of churches, chapels, shrines in the area; typical for rural Bavarian areas. Back along the ridge, passing the church, I decided to descend another side of the hill. I started to use my phone for navigation. This was meant mainly to prevent going on the main roads as much as possible (though in hindsight, there was barely any traffic to be seen, maybe 2 or 3 cars altogether). So on it went, downhills, descending through meadows and neat little farms and villages. All nice, wide paved roads. After branching from the main road, the route became increasingly side-path-y, smaller roads, more curves, until suddenly the pavement ended and I was on a farm road. And there was a fork. The navigation told me to go right, but it turned out the path ended at some trees, with only a narrow breach, overgrown with tall grass, to follow through a forest. Too much to decently ride, even with a EUC. So back to the fork, and going the other way. Surely, this had to be a better way forward. And better it was, though it would still hold some surprises (theme #1). The path went downhill steeper and steeper, through parts of forests and between steep meadowy hillsides. And always little to be seen besides the sky, the lights of the valley in the distance, and the trusty ACM's light cone to illuminate what's coming. Very much fun! Creepytime came again when I heard unexpected movement to the sides. Just some cows I woke up, though. Sorry, cows! Cows, plus valley lights in the distance. Then the narrow path got even steeper, and I did breaks every few minutes again, just to be sure my cabling stayed healthy. It was broken up concrete plates by now, overgrown with grass, and some deep cracks and potholes for extra challenge. And even steeper it became. Way too steep to turn around without having to carry the wheel up. Looking it up afterwards, it was up to 25% inclines. For a EUC, this is a lot. Even downhills. Right when the end of the last and craziest piece of incline could be seen, I underestimated an extra big crack, and gave some new battle scars to my mostly pristine ACM. Oh well... Anyways, finally I arrived at more level ground again. No more breaks necessary. But extra super creepytime. Picture this: an old farm in the pitch black dark, a loud dripping (?) sound seeming to come closer everytime you look in another direction, lots of scary looking sharp farm equipment, right out of a horror movie. And a Jesus statue, looking down at you. Took some photos by the light of the ACM and phone flash. Drip drip drip drip drip..... in the darkness. It's just a small, remote mountain farm, but not looking that harmless at night. Shed in the darkness, valley lights still some way below. Also, in the photo it looks like a EUC is leaning there Ninebot? Hey Jesus, how are you! To the right, steep incline I descended from. On the left, the path forward, only slightly inclined downwards. The path onwards was farm road, narrow but easily ridable. Here's a decent picture from a short part where it actually went up, to pass an old little farm. With another (creepy?) Jesus statue and chapel, naturally. I did not stop for a picture as not to possibly wake up the people there, it was still around 4am. You can see it's still quite steep on both sides of the path. It got steeper and broken-up concrete road again, so narrow and steep I was wondering if they could even drive a normal car up to their house. Then some sudden rustling. Some more cows to the side! They didn't seem to be bothered too much by me stopping and photographing, but when I put on my backpack again, that must have sounded like I was taking something out of it. All the cows came. In doubt, animals always want one thing from you: food You can always see the lights of the valley in the background. I had a fantastic view for the entire time (unless when in a piece of forest), the valley, the mountains in front of the sky, just an amazing atmosphere to ride in Some time later, passing another farm, it got creepy and funny at the same time. Sheep. Lots of them. And they got loud. Did you know, in the black darkness, sheep sound surprisingly human-like? Spooky! They all came when I stopped (take a guess what they hoped for). I quickly took a picture of the sheep/extraterrestials disguising themselves as sheep (look at them, you never know) and went on. They got so loud I was scared they'd wake up the entire farm (still pitch black night), thus the hurry. Left behind some clearly disappointed sounding sheep when I continued. Sheep, or Aliens? You decide. Some more descending, and it looked like I was almost down. Paved roads! Here's a shed along the way. As you can see, the sky finally got a little bright. Around 4:30 am. Reaching the base of the mountain, crossing the main road, I did a little break at a swimming lake next to the river. The weather was a bit too cold for swimming though, so I didn't (did that on some earlier night ride though, was fantastic!). ACM at the lake in the dawn. I continued towards home on the dam along the river, and it got brighter and brighter quite fast. It is summer, after all. These pictures are around 5am. Cute tiny trailer. No more pictures from the way home, as nothing much special happened and my phone battery was near 0%. It was mainly an issue of getting the 10 to 15 km home. But the ACM to the rescue, thanks to its USB port! Tip: always take your charging cable with you! Initially I wanted to make a stop for recharging the phone, until I realized I can do that without stopping. This photo was actually made by accident but this is how I continued. Being freed of the phone battery constraint (worried to lose my GPS track that was still recording), and not having had enough EUC riding yet, I decided to make as many detours as I could before the wheel would start beeping at me due to low battery. One of the detours, a short dead end in the forest, gave some more small battle scars to my ACM, and bent my phone's cable. Thanks to something hidden in the high grass. The ACM's USB port was not damaged though. Very sturdy little machine. Picture from today. I continued on, doing whatever detours came to mind, draining the battery. It's surprising at what comparably little stresses the wheel beeps at you with low battery. In the end, I had to go 15 km/h or less to prevent beeping at every small obstacle, hill, or acceleration. Finally, at 7 am, 6 hours and 15 minutes after I had left, I was home again. Tired but very happy. Not a single time did I worry about my battery status or not getting home, as I knew the ACM had plenty of juice left. I did not even start with a full wheel, probably at 85 or 90%. 57 km ridden, in what was initially meant to be a 2 or 3 hour ride. BIG BATTERIES ARE AWESOME! Here's the track. With time and distance ridden Start at the red Cyrillic letter and go clockwise. That's the end of the story. Hope you enjoyed. And learned something: in doubt, always go for the bigger battery. Absolutely worth it!
  2. 7 points
    I would recommend that everyone who rides an EUC considers learning to competently hop up and down a regular curb or step - both are really useful manoeuvres. For small hops/drops you should be able to complete these at normal riding speed. For bigger hops/drops - these need to be attempted at much lower speeds. Hopping up on to a platform is obviously a lot easier than jumping right over something. You have to be careful with larger drops - I have burst a few tires and even cracked off a piece of rim (see photo below) when doing big drops (I would classify a big drop as 80 cm or more). Rider weight, tire pressure, EUC build quality and terrain surface are obviously important variables to consider when determining how big a drop you can complete. The tricky jump is the "Bar Jump" - there is very little room for error :-) My personal record for hopping up on to a platform is 40 cm/ 16 inches.
  3. 7 points
    A little video from DC, rode along the mall to Capital then to Lincoln and back. I do not have the gear to keep the Sony a6000 steady or a way to cancel the wind noise. This is my first video on a EUC so be warn.
  4. 6 points
    Speedy Feet IPS i5 Review
  5. 5 points
    Lazy and/or careless engineering in our wheels? Noo, that has never happened...
  6. 5 points
    Some words to the 14c "axle" problems... Yes, there were several axle failures on older models, the 14c has gone (at least) through 3 iterations.... On newer Models, the axle problems have bin resolved so that there is no way to speak from "several/often" anymore. Yes, still on the newer models, or on 16B's "sometime" there can be a breakage, but its no "systematic fault" anymore. from my experience: if you ever, ever hear any sounds from your pedals when mounting, or under heavy load, like a plastic crackling /gnarcing....there is a good chance that one of the pedalarm holding bolts, which secures the pedalarm to the axle, has become loose! This bolts getting loose, are putting an much higher stress on the axle as normal...it means that on every movement the pedalarm is working against axle and shell! And weakening the axle! Then it is hurry time for maintenance and securing this bolts again! When the Pedalarm scatches against the wheel while driving...chances are high, it has come to a point where it is to late and the axle is allready broken or deformed and just in a happy case the bolts are just ultra loose! So main Point: Listen to your wheel! On all newer KS models, 14d, 16s, 18s the axles again should have been overworked, but this is just a statement of KS employees, and i personally havent seen one in real life.....but AFAIK there is no report of axle problems on newer models known until now.... And btw: Axle breakage is possible on every wheel...GW, IM...its just that these wheels have other/bigger problems which are under the spotlight ;-)
  7. 5 points
    Darn right Canada sucks! Summers are too short here, it snows like crazy sometimes, plus the government taxes the bajeebers out of you. It's almost as bad as Finland! Add to that they fine us and consider us criminals for having a little bit of fun on a single wheel - I'm ready to move to St. Maarten. Screw you Canada, screw you!!! Oh hold on a second - can't do that. All my money is in Canadian dollars, and they suck too at the moment. Oh well it's still bright outside - I think I'll go out and break some laws with my Ninebot. Edit: Why can't we be more like Russia?
  8. 4 points
    I just went back and reread this thread from start to finish. Lots of great stuff! Three big "jewels" for me. One was the "triangle method" for mounting. But, I was confused by the guy in the video saying to "lock your knee", when he clearly wasn't locking his knee. I think the language translation was bad. I think what he meant was to lock the wheel against your lower leg calf. I hadn't realized how important this was for easily mounting the wheel. That's what keeps the wheel from flopping toward the foot you have on the pedal. I guess that's a "DUH!", but I just didn't pick that up until I saw the triangle video and thought about what he was trying to say. Also, centering the calf of the lower leg over the axle (versus trying to minimize the amount of your foot that overhangs the pedal). This makes it MUCH easier to hold the wheel against the calf of the leg while mounting and dismounting! Also, just today I discovered the merit of lots of short practice sessions, versus long cruises for improving riding skill. It was a bit of a hassle to get ready to ride. All the safety equipment to put on and lacing up my high top boots. Then, it wasn't easy to mount the wheel (though I started "cheating" and using a retaining wall to get on). So, once I got ready to go, I wanted to ride a while! Today I'm doing some processing of some very large files. This means that I have to launch a process on a PC, then wait five or ten minutes before I can do the next step. So, I'm keeping my boots on! I've been doing this for a few hours, but while waiting for the processing to finish, I've been going out in the driveway to practice mounting and figure eights. I've made more progress in five or six five minute sessions than I do in several half hour cruises! And, I'm having as much fun doing fast and tight figure eights as I did being a little scared while cruising along at higher speeds. Thanks for all the great posts! I love this forum!
  9. 4 points
    I believe the conclusion in this forum is that, electrically, more mosfets is nonsense. You should use better ones instead of more. So 12 vs 6 is (ultimately counterproductive) marketing; 6 better mosfets would be the proper way to do it. I think KS did exactly that in their S versions.
  10. 4 points
    Machining a larger axle will require a complete redesign of the motor hub but that would be a positive move! Are EUC manufactures willing to absorb the cost of redesigning a new hub construct over a handful of broken axle incidents? Maybe if the demand is there. If you look at the axle of my ACM you can clearly see the axle hollowed out for acceptance of the motor wires. Additionally there is right angle hole of similar dimensions drilled in the side of the shaft! At this juncture there is very little wall thickness remaining on the steel shaft making it the weakest link in the chain! You can also see the beginning stages of corrosion inside the axle which has never been exposed to any direct moisture! In my opinion the current axles are weak constructs that exhort for the redesign of a larger diameter axle fabricated from superior material such as an aircraft steel alloy! Additionally the inner shaft that has been machined to accept the motor wires should at least be coated with grease to minimize any possibility of corrosion! Better yet... machine the axles out of stainless steel!
  11. 4 points
    In Germany we have a popular saying: Making an elephant from an mosquito... On the the five e-wheels i owned until know, some of them "known" as "axle-problematic" the very least problem i have with them was with the axle.... in my opinion, there are much more worse problems that need solutions, and that very quickly! the main one is -in my view- redundance! as long as there are stories of firmware-batches, which lead to a cutout by a bump or small hole, we can have better mosfets, capcitors, more voltage, better axles, and what else not - the hole day long! that all wont help!!! As long as one of the main producers, whatever its name is, does not solve the main problem of our beloved unicycles, and that is IMHO to have a redundancy-board-batterie-wheel-safety solution...all those little improvements as mentioned above, will help nothing! In my view the company which can provide a REAL safe wheel will be the winner in this games! perhaps my view is a bit overdrawn....but who ever experienced a cutout, fall, crash which is related to technics...looses a lot of trust in our beloved gadgets and keeps wishing for a much more intense view on safety!
  12. 4 points
    I thought it was about time to refurbish my ks16 for the summer, and I have always jelaously been looking at the matte black shells. First is the before picture. It is actually from a tire change last year, it was more scratches and marks on it now. Next is in the middle of the shell replacement. Just removed the trolley handle to reach the top cover shell. Then a picture of the old shell and pedals (yes I did a try with black vinyl wrapping earlier this year, but I am far too restless to get that nice so I was not too happy about the result). 4th picture is the wheel with new shell and new pedals. Also new side pads without the kingsong logo. Picture 5, 6 and 7 shows some minor additional things. I put grip tape under the pedals. Apart from protect them from scratches I find it to be quite good looking. The very uncool reflectors on the front/rear/side are attached with hook-and-loop/velcro tape on pads cut out from those bumper foam strips that I have seen a lot of you people on this forum are using as wheel protection. The cool thing with the uncool safety reflectors are that they are actually certified for use here in Sweden, which not many reflectors are, actually I have only found 2 or 3 brands that are legally allowed (and all look this ugly, maybe that is a requirement in the certification :). I have also put on a light which is a lot brighter than the built-in (1600 lumen). It's a bicycle front light/headlight with a small battery pack that I fastened against the trolley handle. And as you may see I have also put on some rubber strips to protect the wheel. I have no illusions that they will keep this wheel looking clean like this forever, but maybe a little longer than otherwise. Shell and pads are from Kingsong Europe, bumper foam and new pedals are from Aliexpress. Rubber strips, reflectors and light are from local Swedish hardware stores.
  13. 4 points
    I agree! Even if you decide you would rather dismount your wheel than ascend or descend a stair(s) the maneuver will prepare you for any bump in the road or large tree root in the woods. Eventually the maneuver will become automatic with very little thought process involved. Amazing legs of steel! If Segway/Ninebot ever decides to grow into a serious competitor of Inmotion, GW or KS, etc. it would be to their advantage to hire someone of your caliber to promote their products!
  14. 4 points
    This is indeed key. Another way to put it: I let the wheel climb on its own with as little as possible rider weight on it. Similarly for down curbs but "in opposite order": if time allows I bend the knees in advance, ideally such my own CoG practically only changes horizontally while going down the curb (knees remain soft and never fully straighten). This, I believe, removes a lot of strain from the axle, probably at least halving the additional stress.
  15. 4 points
    @meepmeepmayer - you need to understand that @Hunka Hunka Burning Love is Canadian, and things are a little different way up there... Their money is (dollar for dollar) equal in value to a Hungarian Forint, they don't have Pineapple Lumps (unless they secretly bring them in on the black market), and Knight Rider had only just made it onto their televisions!
  16. 4 points
    @meepmeepmayer you need to install this on the front of your wheel: and change your username to meepmeepknightrider!
  17. 4 points
    Good thing too since you missed that giant hairy spider, hidden in that crevice, that leaped out at him. I ride off 90 degree sidewalk curbs every now and then. It jars the wheel a bit so I don't do it too often. I think if the shell had some sort of suspension component it would be more pleasant. My battery is pretty secure so I don't think there's a huge problem dropping off small curbs. I've ridden over small dirt ramps at medium speed a la EUC Extreme style but on a smaller scale of course. There's a tendency to fall backwards after cresting the peak so it's probably best to have a forward lean stance to counter that.
  18. 4 points
    Do you step off your machine when a curb comes along? No Do you go up or down stairs on your wheel? No Jump? No Do you slow down or speed up to do it? Slow down, actual speed depends on the height, slower for higher / steeper curbs, I "lighten" the wheel by bending my knees when it hits the curb (going up), when coming down, I just ride over it How safe do you think it is to do any of that, either for your health or your machine? So far, no faceplant, sometimes I don't get the timing right, and my feet shift on the pedals, which I correct afterwards, for machine, see next point Would you recommend it or advise against? For lighter riders, I don't think the wear on axles / pedal hangers is too high, but might be different for heavier people... I don't really know. The safest option is of course to step off and "walk" the wheel over the curb or find another point with less steep / high curb And do you yourself practice what you might think should be preached? Basically, yes, as I'm in the "feather-weight" class...
  19. 3 points
    I wonder if this can even be pinned down to any coherent answer, riders and wheels both being built so differently, but humor me if you will and share your opinions and/or experiences. Do you step off your machine when a curb comes along? Do you go up or down stairs on your wheel? Jump? Do you slow down or speed up to do it? How safe do you think it is to do any of that, either for your health or your machine? Would you recommend it or advise against? And do you yourself practice what you might think should be preached?
  20. 3 points
    I have no personal interest in the I5, but still think that this kind of wheel could become very popular among people who want one for last mile commutes and such, if the price isn't too high. Small, portable, light-weight (well, in comparison to most wheels). Of course, as with any wheel, there's always the learning barrier, which probably scares away most people, but it does have potential.
  21. 3 points
    Coming from my "Month May" Asia trip in Thailand....the guys of KS Thailand there are ONLY doing night trips... Thats mostly because of the heat in the days and that you can not exist in the sun on the day! These night drives are the best i ever experienced....so much to show , the lights are fantastic and BKK at all is a great city a t night ;-)
  22. 3 points
    Totally enjoyed your documented travels! As @Marty Backe has stated many times the USB port does come in handy! Hopefully on future designs GW keeps the port! You definitely had a captive audience!
  23. 3 points
    There is no reason that an axle cannot be larger than 18mm and there is also no good reason that an 18mm must break, other than lazy or careless engineering, IMHO. I believe the design with the hole in the middle makes the choice of bearings more difficult, at least in practice. Bearings are the only part of an EUC which needs to move (smoothly) under full weight load. With the hole in the middle, the bearing becomes much larger and (much?) heavier and the bearing seal needs to cover a much larger area with higher speeds against each other. This engineering problem might have a reliable solution, but it will not come from engineers who cannot even design a reliable axle.
  24. 3 points
  25. 3 points
    For going up curbs, I prefer jumping over the letting the wheel climbing it on it's own method, seems less stressfull to the wheel and especially the tire. If you don't jump high enough, thats no problem because the wheel will still do it's cimb up thing. For curbs that are much higher than 10 cm I prefer to dismount. However, I have no problems going down any curbs. Just as @Mono said, bend your knees so the wheel doesn't have to take all the force.
  26. 3 points
    Yes you would definitely want to earn it before pushing too hard ? Low temperatures seem to have the effect of increasing the internal resistance within the cells, whilst this will in itself you would think would simply result in heating them up more quickly it does seem to degrade the cells over time. Obviously the best strategy is to start with the battery at room temperature. @esaj and @EUC Extreme are probably our best experts on this being that they ride in such sub-tropical paradises as Finland! I believe @EUC Extremehas arranged heating on his battery packs? @esajhas covered this in his usual comprehensive style here:
  27. 3 points
    YOUR POST IS AWESOME! I just relived multiple flashbacks from the many happy years I enjoyed in Deutschland. Wish I had an EUC back then. Sigh.
  28. 3 points
    This should be a poll! UpCurb: if >=3" step off, otherwise slow down, forward momentum required DownCurb: if >6" step off, otherwise slow down and decrease speed proportional to estimated drop-off, forward momentum required Up/DownStairs: only stairs at outdoor venues with long run, low rise Health: No worries about Ninebot, no worries about person since I'm wearing appropriate safety gear and cautious of traffic Recommend? Check with your GP and insurance agent first
  29. 3 points
    I must respectfully disagree to set at least the record straight concerning my beloved KS14C and to inform others. I did not jump curbs, no drops taken, and am not heavy at 75 kilos and my axle went bad anyway! And also did not ever get over the hip pain hurting stage to ride one foot, still not, so this might have also added stress even for super short periods of time, but it sure seems ANY EUC should be able to handle one foot riding for extended periods of time! I just advise all those with maybe even ANY E U C, but for sure any KS14C, to check the spacing between the pedal supports "pillars"? and the wheel, motor sides. AND STOP RIDING IF YOU HEAR ANY SCRAPING SOUND AND CHECK AS SAID ABOVE! It also could be very well true that some axles are and will remain just fine, while others fail. I am VERY interested to see how my warranty replacement axle holds up? ukj
  30. 2 points
    Okay everyone here is a question for you all... When it's cold, is there any benefit to warming my wheel before i push it hard? I suppose this is a battery question, as I don't believe the motor is affected... So when it is cold (ie. <5°C / <40°F) is it better for my batteries to start riding gently (allowing lower current to "warm" them) before leaning into it a bit more? Or is it all rubbish and I should just go for broke...
  31. 2 points
    Beauty is in the eye of the beholder I suppose. I remember when I was a kid, I bought this really nice, slim Sony Walkman. It just had a cassette player to play my mix tapes on the bus (no radio), but it was super slim - not much larger than the cassette itself. It had a stick of gum flat rectangular battery which I thought was cool. It was all metal, and esthetically they just nailed it. I couldn't find a photo, but it was sort of like this except nicer. The flat drive motors were amazing. Mine was champange coloured. It's an amazing feat to have eliminated the bulky pedal support with direct to shell mounting. Hopefully V2 and future designs will up the style factor up a notch.
  32. 2 points
    I like the whole idea of a lightweight, small format wheel, but I just wished it was nicer looking from the start. I guess it does fit in with the whole Industrial Product Section approach, but I don't know - couldn't they make it more visually appealing? The Fiat 500 sells okay, but you see Mini Coopers way more often. I've known women who buy cameras and purses based on colour and looks alone. If IPS is wanting to expand their market, why not make a slick looking wheel that compensates for its lesser abilities by appearing awesome? Add a thin, stylish pad on both sides for user comfort, and be done with it. Take the iPhone for example. It's a tightly controlled OS (without jailbreaking) with good performance. It looks sleek and ask anyone what they think of Rose Gold or Champagne colour, and they flip head over heals for it even though they then cover it up with a phone case. People want nice looking products. Maybe they will make a nice silicon slip on cover with built in padding for the i5? The i5 is clean looking and sleek - I'll give it that. Plus it is amazing for such a small wheel. I just wished it didn't look so much like a black gas canister. It does grow on you though I guess kinda like the ACM. I thought the ACM looked like a PC case, but it compensates for it from its performance abilities.
  33. 2 points
    In my profession throughout the design phase, prior to fabricating an orthopedic brace, there are a number of considerations taken into account so the device ends up being biomechanically sound. Activity level and weight are always key factors. When I fabricate the appliance it has been designed to exceed all tolerance levels. I had one child fall and break a leg during my career due to a maladroit design flaw. Once was enough. Now all of my orthopedic appliances are over engineered! It would be nice if EUC manufacturers would follow a similar paradigm before more riders become injured due to attenuated components that are underengineered!
  34. 2 points
    hey esaj, thanks a lot for opening your wheel!! guys, sorry it took me soo long the weather is too good Cortex M3, Arm7 is a good point to start. Though I did not yet manage to get a useful disassembly :/ I think they use parts of the chips internal flash ram to store other parameters like total mileage and stuff that are not overwritten during firmware flash, not sure about external flash. though the coating is useful against moisture, it would make it difficult to read or write to a possible second memory chip without having a full understanding of how everything works together first, in order to do it in software. @Hunka Hunka Burning Love I already decompiled one apk and found nothing that looks like encryption or compression at least inside the java code. However a few methods might be interesting to play with to see if we can read or write different stuff than what the app currently uses. Sometime ago I saw a video from the kingsong factory, where a guy used a custom android app to set or controll some firmware/engine parameters, however I can't find the vid right now. Anyway, we can use the apps Bluetooth communication methods to play around, without having to write our own app. private void readAlarmParas() { byte[] data = new byte[20]; data[0] = (byte) -86; data[1] = (byte) 85; data[16] = (byte) -104; data[17] = (byte) 20; data[18] = (byte) 90; data[19] = (byte) 90; MainActivity.mBluetoothLeService.writeBluetoothGattCharacteristic(data); } private void writeAlarmParas() { byte[] data = new byte[20]; data[0] = (byte) -86; data[1] = (byte) 85; data[2] = (byte) this.speedLevel1; data[3] = (byte) 0; data[4] = (byte) this.speedLevel2; data[5] = (byte) 0; data[6] = (byte) this.speedLevel3; data[7] = (byte) 0; data[8] = (byte) this.waneSpeed; data[9] = (byte) 0; data[16] = (byte) -123; data[17] = (byte) 20; data[18] = (byte) 90; data[19] = (byte) 90; MainActivity.mBluetoothLeService.writeBluetoothGattCharacteristic(data); } Of course theres a sanity check inside the firmware to not accept any values (also a few sanity checks in the app like if (this.speedLevel1 > this.speedLevel2 || this.speedLevel2 > this.speedLevel3) etc.). But I did not find the time yet to recompile the project and feed some garbage to test it. For me the result counts, the easier the better
  35. 2 points
    Yep. So relaxing! And you can use all the streets that would usually be full of traffic. In an earlier night ride, I literally did circles on main intersections, went through the center of the city, snaked across the middle line while going along a 4 lane road, etc - great fun. And nothing of that was even planned, just the kind of thing that tends to happen @Hunka Hunka Burning Love You want me to ride through the night and solve crimes? Why not Then my ACM would also need an AI personality, and I would call it Ace (one syllable short for ACM) and it has to call me Michael (just so). I only hope the AI won't be made by the same Gotway engineers that designed the electronics Funny thing is, in these flash photos you can see more than I could at the time. You heard the sheep first, and only then coming closer you could make some out.
  36. 2 points
    Not overdrawn one bit! I believe the firmware, control boards and wiring are the main safety issues at the moment. I'm kind of glad my ACM mods are not completely finished given the recent issues with the MSuper and ACM! I hope there are some definitive answers from GW soon concerning all of the unsolved dangerous cutouts!
  37. 2 points
    Actually... Yeah there is a certain lackadaisical attitude towards QC as well as stress testing designs. But I think we tend to miss one of the reasons for that attitude. I really don't think it's a "we don't care as long as we sell" thing, more like "we need to get this out now, or we'll go bust" thing. Quite a few of these manufacturers operate on a shoe-string compared to what we're used to, they're startups in an environment where the sharks are circling the boat. I doubt even the larger manufacturers have a serious amount of reserve capital if the fecal matter hits the rotating impeller. To some extent we have to go as far back as the first and second industrial revolutions in Europe and the US, to really get what's going on. The era of the rail-road and industrial tycoons, where you'd either get rich or eat your gun failing. Where working conditions or quality was a far second to productivity; Where a person like Edison got rich of his patents, while Tesla died a pauper after selling his far too cheaply. The reasoning for such an idiocy as too narrow axles would then be something like "if it's good enough for bikes, it should be good enough for unicycles"... Totally missing that while a bicycle spreads the force between two larger spoked wheels with some distance between them, a unicycle hitting an obstacle gets the full force - without any form of suspension or even spokes to dampen the impact. That means the same axles that can go decades on a bicycle without any tendency to fatigue, will risk failure in a year or two on an EUC if the rider weighs more than 70-75 kg and routinely goes of even low curbs. I think this actually came as a bit of a shock for both Kingsong, GW, Rockwheel, Inmotion and all the others. They should have realised, but probably didn't. Now that they know, they realise in turn, that re-engineering the axle means going non-standard, which will cut into their margins. They'll probably do it anyway, eventually, since the last manufacturer doing it will be up the proverbial human waste creak without a paddle. If for example two out of the big manufacturers would go to 25mm axles, or do a serious rethink, like in the picture. Then the ones left, would find their customers fleeing at the speed of light, as soon as the concept was proven to work.
  38. 2 points
    I haven't had the pleasure of trying winter-riding, There hasn't yet been a winter where I'd have a working wheel But EUC Extreme mentioned to me once that without battery heating and Finnish winter (-15...-30 Celsius or such), starting from the room temperature the battery dies in about 10-15 minutes while riding (as in, not "dies" like doesn't work at all anymore, but apparently it won't give high enough voltage for the wheel to keep working). I've also read the warning not to charge batteries below 0 Celsius, IIRC, it can damage them permanently. At least earlier, EUC Extreme's heating systems were made by some guy who usually builds them for RC-helicopters & planes for winter flying.
  39. 2 points
    Hi, On my NB E+ the valve is quite difficult to get to - I have to use an extension adaptor to reach the valve. As I regularly check my tire pressure (and adjust the pressure depending on the type of riding I am doing (and for different tricks) I leave the cap off. I haven't had a problem so far - in total I have racked up about 4000 Km. If the valve was more easily accessible then I would always keep the cap on.
  40. 2 points
  41. 2 points
    This is yueyue from IPS manufacture, please contact with me: yueyue.wang@iamips.com And I need to know more details, I will give you some advise and help. Thanks.
  42. 2 points
    I love night rides, deserted streets and next to no traffic. I think most of my Firewheel-rides occurred between 9pm and 5am... At summer, it's light all around the clock, but towards autumn, it starts to get dark at nights. I probably should look into how to attach the riding lights to the KS's.
  43. 2 points
    I think it was 1.2.9 that became very infamous, as it bricked the wheels... another version blew the mosfets on quite some boards. Don't remember the specifics, and not sure what version numbers were exactly, but it was a turning point where Ninebot went from being one of the most esteemed wheels to a more dubious quality in peoples' minds. Some reseller in US sold E's or E+'s at something like $499 at one point in 2015 or early 2016. That's the maximum rating, the "power" wheels have that as nominal, and peaks at 3-4kW (3000-4000W) or more...
  44. 2 points
    Awesome look, lightweight and full visibility! I may return my face guard.
  45. 2 points
    Coming DarknessBot 2.0! - Added Siri Support. Say on connected EUC: "How much charge is left in my car?" - Added Neural Network. More smooth remaining mileage prediction - Improved Apple Watch App - Added Rockwheel (GT14, GT16) Support - KingSong / Gotway: fixed voltage and battery level
  46. 2 points
    Jeeeez, thats gonna give me nightmares ... how can anyone do that ? Im up on the roofs of high buildings quite a bit with my job and I have no problem with heights but I break out in a cold sweat just watching that.
  47. 2 points
    I walk the wheel down, no exceptions. However, I have occasionally dropped off a sidewalk by accident on my V5F, once was a huge drop (to me) and...nothing. The wheel did not skip, there was no loud noise, there was no heavy impact, nor loss of balance. It's as if you'd be better off just pretending the drop doesn't exist. I've fallen many times by slowing quickly and bailing when my wheel gets stuck. Saying that, I absolutely do not drop down any curb. Well, if it's an inch high, and even then I do not do that on my KS14C. Now going up small curbs using a little hop, that's a lot of fun and I do that a lot. Approach the curb (maybe 3 inches max), cruising slowly, bent forward with bent knees, and right when the front tire catches the lip of the curb jump up! I don't squeeze the wheel at all but rather just let it crawl awesomely up and over the curb. Occasionally I make a perfect leap but much more often I'm a bit (or a lot) of balance. Great fun! You'd be surprised at how much fear is involved in jumping up a tiny curb like that which, realistically, you'd have to be a total dork to injure yourself, but I assure you I chicken out plenty of times when approaching a curb to jump. Some of those curbs look like this to me...
  48. 2 points
    The first part was unboxing he thought the cardboard box was not very nice and the egg shell within the box was so old fashioned. Second part was looking talking about how thing the Wheel is. Trying to work out how to turn the light on. How you have to unscrew a cap before you can pump the tyres saying how this part of yhe design needs improvement. Next part was testing how it rode and the last part was looking at the 2 different models and how to tell them apart. I think that's about it before I dosed off.
  49. 2 points
    My characteristic is that the pedal is mounted directly on the motor.
  50. 2 points
    I designed a motor that has been patented in China, which will change the design of EUC.
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