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  1. 34 points
    The story of how I and two fellow wheel riders became lost in the mountains and lived to ride another day. As I begin this, it must be said that I'm the one with poor judgement in this story. Well intentioned, but... The Cogswell Dam, as I've previously written about, is a gorgeous area to ride an EUC. It's basically a canyon ride on the northern side of a mountain ridge. I've ridden it twice before. Throughout this region are countless trails, large and small. One of the most well known is a four wheel drive capable trail called the Rincon Shortcut OHV Trail. It stretches along the southern side of the ridge that is shared with the Cogswell Dam. The Rincon trail-head starts about an 1/8 mile south of the Cogswell Dam trail-head. Up in the mountains there is a connection between the two, and that's what I've been itching to try. Complete the approximately 30 mile loop that joins the two trails. So I coordinated a group ride for Saturday morning, and my long time riding buddy @jrkline was the first to commit to the ride and not too long afterwards @Ando Melkonyan eagerly committed to the adventure (he had his newly acquired ACM). We were to leave by 9:30am, traversing the southern (Rincon) route first, taking advantage of the coolness of the morning air. Eventually we would meet up with the Cogswell Dam trail high up in the mountains and return by way of the shaded northern trail to avoid the extreme heat of the day. Oh, and today was the peak of a mini heat wave in Southern California, where the temperature was predicted to be in the low 90's. Maybe we should have brought more water. Hmmm. @abinder3 joined us at the very beginning. He didn't have time for the entire route (regardless of his reasons that was a good decision in hindsight) and therefore was just going to ride to the dam and back, about a 20 mile roundtrip. But it was nice that we could all meet at the beginning and share a few stories before we went our separate ways. In the picture above, from left to right: @abinder3 (Allen), @Ando Melkonyan, @jrkline (Jeff), and myself. Don't we look happy - if only we knew what was forthcoming I had my Monster which I had previously ridden here twice before. Jeff had the FrankenACM - I know, I know, his world famous 2040wh ACM. As would be demonstrated throughout the day, his ACM never fails. It may not be pretty but it's a faithful workhorse. And Ando brought his 3 week old ACM with a 2-1/2" tire that he managed to fit on the wheel. He had to cut away parts of the shell to make it fit, but he turned it into a really nice trail machine. We finally began our journal and after a few hundred feet wished Allen well as he exited for his trail head. We continued on the two lane highway until we came upon the locked trail gate, representing the entrance to our grand adventure. After bypassing the gate we began our journey in earnest. On a previous outing to Cogswell Dam I had ridden this part of the trail for a mile or so and was hoping the whole trail would be as I remembered. And for the most part it was, perhaps a little steeper in sections. But remember that this is a four wheel drive trail so certainly any path that a truck can take we can tackle easily on our EUCs. In this video you can see me struggling a bit as the ACMs zoom past me After a few miles of steady uphill climbing I was beginning to think that I should have taken my ACM too instead of the Monster. I've ridden my Monster a lot in the mountains now, but never for extended uphill pushes. We were on a trail that was to continuously climb for over 3500 feet. And this wasn't a paved road. It was gravel and sand mixed with large rocks and various ruts. So there was a lot of maneuvering involved, slips, slides, near stalls, and periodical jump-stops for the wheels. Although I have experience with the Monster and know that it's capable of ascending any hill that the ACM is, it does so extremely slowly and with much effort. As Jeff and Ando zoomed up the trail sections with hardly any physical effort, I was in a near constant crouch and heavy lean. Plus all of the effort required to steer the 70 pound Monster ... But I was hanging in there despite the ridicule coming from my fellow riders ;-) Fairly early on we had our first crash. I must say, anybody who wants to keep their wheel pristine should never do off-road trail riding. It's a messy business. My Monster requires a wide berth and although I always have my trusty helmet mirror, I have some rather large blind spots. Jeff was apparently unaware of these facts. As he was overtaking me on my left I was slowing sliding left. Our pedals locked and in the next moment we were both sprawled on the ground. Jeff's bloodied forearm and my bruised ego provided good entertainment for Ando :-) Here's a couple pictures of the aftermath: We continued the long climb, but I was getting tired. At one point Ando offered me his ACM while he pushed forward with the Monster. And then he proceeded to demonstrate a new technique (to me) for getting the Monster up hills fast. Jeff and I had great fun watching this and I think Ando was having fun to. It looked like he was riding a horse, but indeed it really moved fast. When I started riding the Monster again I used this technique and it really helped. But it was still hard on the body because of the lean, and steering was proving difficult. Eventually I discovered that if I was in a squatting position and squeezing the wheel between my knees, AND using my knees to force the wheel forward, the Monster really moved. This was exhausting however. We were still having a good time, enjoying each others crashes and Ando's music Somewhere near two hours we finally arrived near the peak. I was beat. Now we needed to find the trailhead that led back down to the Cogswell Dam. We came across a lone mountain bike rider that pointed us in the general direction that we needed to take to begin the descent to Cogswell Dam. In the following thumbnail you can see the Dam far below us. Here is where I made the fateful mistake of picking the wrong trail. It went down and looked to be in the general direction, so let's go for it. I really should have spent as long as I needed to be sure, but in the back of my mind I figured if it was wrong we'd probably realize it fairly soon and just backtrack. What I didn't take into consideration was my failing body :-( As we proceeded down this trail it slowly got sketchier and sketchier. First there were small dead falls (trees that fall across a trail) and then bigger and bigger ones where it took minutes to carry and or drag the wheel across. I was getting weaker. I had no more food and none of us had any more water. Remember that I said it was going to be in the 90's today. I felt like I was beginning to get symptoms of dehydration - shaky legs and arms and extreme fatigue. I could only ride 20 feet before I would loose control and had to stop and rest for a few minutes. By this time I had a few more rather severe falls which further hampered my ability to ride the wheel. Besides my difficulties, it had become clear that we were somewhat lost. This was certainly not the trail to the Cogswell Dam. I could simply not go further. At this point I was with Jeff. Ando had explored further along the trail and when he returned he said that he found water (we could hear a stream in the distance below). You don't know how excited I was to hear this. I felt that maybe if I got some water I may recover enough to continue at some level. Jeff took my empty water bottle and disappeared down the trail to return with water. I was feeling a bit mentally refreshed. While Jeff was away Ando and I tried to figure out exactly where we were. I had offline Google maps in my phone and a Garmin 60CS handheld navigator. BTW, GPS reception was not great within these mountains. But we eventually determined our exact location. Miles from the trail that we should have taken. I had arrived at a difficult decision. Like the sailboat captain in the middle of the ocean that grapples with the decision to press the emergency beacon, knowing that when he does so he will be rescued but his boat will be left behind, gone forever. But I knew that I could not continue back uphill to retrace our steps by a few miles and then down another 15 miles. Impossible. So I told Ando to leave me and get back to the area where we made the bad turn. In that area there was a line of site to the greater Los Angeles area and there was cell phone coverage. "Tell them that a person was suffering from exhaustion and dehydration. Call 911". Now by this point at least 15 minutes had passed and Jeff probably should have returned within 10 minutes since Ando knew the water was only 5 minutes away by wheel. But we continued to wait. While doing so Ando took my Monster and rode/carried it up the trail past a few of the sever dead-falls. And then walked back. Amazing, and as you'll learn in a bit, very important that he did so. Still no Jeff. Instead of sending Ando to look for Jeff I suggested that he go the other way, and I'll wait for him. So Ando disappeared with his ACM and I was alone in the middle of what felt like nowhere. I think it was about 3pm at this point. I lay on the ground and was anticipating a bottle of water with great joy. Maybe another fifteen minutes went by. Nothing. Then I started thinking, "Maybe something happened to Jeff. Was there an accident. Did his ACM break". I slowly started walking down the trail. 20 steps and then lay on the ground to recover. 20 steps, lay on the ground. I did this for maybe 15 minutes but realized that if he was hurt or the wheel was broken I was in no condition to help. And I had told Ando that if possible I would try and walk back to the trail junction at the top of the mountain. So I abandoned Jeff and ever so slowly started walking up hill. 20 steps, lay on the ground, ad nausea-um. I still had hopes that Jeff would return with water. I would have given away my Monster for water at that point. It really was horrible. At this incredibly slow pace I managed to get past the large dead-falls. I never would have been able to get my Monster past these obstacles in my condition. Eventually I found my Monster and could not believe how far Ando had taken it for me. I then proceeded to push it and myself up the trail, in spurts of low speed energy. A trolley handle may have helped, but just the effort of pushing the Monster and walking was too much. After maybe an hour I decided to abandon the Monster, knowing that I would never see it again. I wasn't worried about someone finding and taking it. First, nobody sane travels this impassible trail, and if someone did they wouldn't know what it was, and at 70 pounds I don't think they would try and carry it out. No, I would never see it again because I would never be able to get in here to recover it. That would entail hiking 15 - 20 miles which is a long hike on flat ground. I just didn't see myself being able to do that. I marked the location where I did leave it, in my Garmin 60CS thinking that I would post to Facebook and the Forum with the coordinates and anybody who thinks they could retrieve it could keep it. No bad feelings on my part. Anyway, it was load off my mind when I fully committed to never seeing it again. Let that be a strong reminder to what not to do in the future. I continued the painfully slow march. I was worried for my health because I know dehydration can be bad. But I tried not to exhaust myself too much. Walk for a few minutes and then lay down. Walk, lay down. Minutes turned to hours. I was thinking maybe if I eventually got to that magic "cell phone coverage" area that I could call 911 in case Ando wasn't able to. It's amazing what goes through your mind when you can't communicated with people who are trying to help you.What happened to Jeff? Did Ando make it out yet? Knowing where we had last all been together I was thinking positive and assuming that Jeff decided to explore that path beyond the river and went so far that he decided not to return with water. I knew that particular trail wound its way back up to the top of another mountain range to the 2 freeway which then led to civilization. So if he got out he would be able to call. But I had my doubts that we would have enough remaining power to climb another couple thousand feet and maybe 20 miles. I kept think that if I get rescued I'm going to have to tell them about Jeff so that they can search for him next. After maybe 3 hours I came across these maintenance trucks and construction equipment that we had passed on the way down. I opened every truck and door I could get into and FOUND WATER. Two old water bottles with maybe a 1/3 full of water each was an amazing find. First I sniffed it to be sure that they weren't storing fuel and then guzzled them down. Water had never tasted to good. Although it did not help with the exhaustion in my legs, it did help with the thirst and made me feel like I actually wasn't going to collapse somewhere up here in the mountains. I continued to walk, imagining what might be happening with Ando and Jeff. And then of course I was worrying about my wife because in the absolutely worst case I probably should have been home by now. But there was nothing I could do. She did know the general trails that we were taking (at least I got one thing right), but it would probably be very dark before she pulled the trigger and called 911. So I was still prepared for a very much longer day and night. Dusk was approaching when I started to hear a helicopter somewhere in the distance. That was the first mechanical sound I had heard for hours. I thought I heard a plane too. I did see the helicopter at one point but it was miles in the distance. Amazingly I had made it back to trail junction where we made the bad turn. And then I heard and saw a large search and rescue type helicopter hovering over me, but very high. I was in an area where there were power line towers (thus the maintenance equipment found earlier) plus I'm sure they generally stay far above the trees. I waived both my hands for a little bit and then it moved off to the distance a bit and hovered again. Then it left. "Well, that's it. I've been found and now help will be on the way". That was a huge psychological lift for me. So I continued to walk, and walk, and walk. It was now totally dark, after 8pm. Fortunately I had small pen flashlight so I could see the path in front of me. No longer fearing collapse from dehydration I could start contemplating coming across bears or mountain lions, both of which live in these mountains. What joy! I then spotted a brief flash of light followed shortly by a truck rounding the corner ahead. You can imagine what I thought at that sight. It eventually slowed to a stop beside me and I was asked my name (I guess they didn't want to pick up the wrong guy) and let me in the truck. There were four uniformed men in there, all volunteers for the Sierra Mountain Search and Rescue. They gave me all the water I wanted and bagged peanuts. Life was good. Shortly after I got in the crowded vehicle I asked if they happened to know about any other ..., and before I could complete the sentence they told me that all three people have now been accounted for. So Jeff was alive ;-) I assumed Ando was good because otherwise I probably wouldn't be sitting in the truck at the top of the mountain. Now get this, they then asked me, "do you want to go get your 'bike'?" Are you kidding me? I tried to suggest that I didn't want to put them through the trouble (I really didn't), but they insisted. They said that they were already up there so why not. It probably took another half an hour and a locked gate to get within a few hundred feet of where I left it. The last bit had to be walked since the trail conditions were too severe for the truck. So I actually got my Monster back. It felt like I just received a new wheel because in my mind I given it up for lost. As we drove down the mountain for the next 1-1/2 hours I learned that Jeff had been recovered on the 2 freeway, and Ando was the one that called it in. Eventually I met up with Jeff as we were brought together at the base of the mountain to be driven back to our vehicles (20 miles away). There Jeff told me how he amazing made it back up to the highway on the other side of the mountain range and then down towards town, almost on a zero battery charge. His 2040wh ACM truly has been an amazing wheel. I also learned from the rescuers that the helicopter had not seen me! Amazing. The guys said that in the future you should lay on the ground and move, otherwise all they see from above is a head, and that's hard to distinguise from everything else. So they found me based on what Ando was able to tell them. You can read some of what Jeff encountered here: And then when I finally got home around midnight (having left in the morning at 8am) I eventually read about Ando's experience which was amazing in itself. His ACM has also proven to be an amazing wheel. Essentially going 10 miles down mountain trails with almost no battery power remaining. You can read is account here: And here is the dam (it was not Cogswell after all) that Ando got to: And the 911 help that arrived after he made the call So there you have it. I think none of us will forget this ride. It's been four days and I'm still having difficulty riding, which really surprised me. When yesterday I hopped on my KS14C for a short utilitarian trip I almost crashed as the wheel was very wobbly. I had a hard time turning. It was then that I realized that my legs were still weak and uncoordinated. Amazing. Although I declared that I wouldn't do this again, time heals all wounds ;-) I know Jeff is up to doing it again, and maybe Ando will be to. We will be better prepared next time. More water, food, maps, only ACM's or the like, and a bigger breakfast. Oh, and Jeff says he'll bring his ham radio (which hopefully will not be needed). I hope you enjoyed my little adventure story
  2. 32 points
    Sorry friends for my english. Its google translate. Its a very big topic to make it by their knowledge. If somebody can do better - use original http://electrotransport.ru/ussr/index.php?topic=51168.msg1199893#msg1199893 P.S. The recall company for Gotway is not included. Therefore, statistics on the Got are slightly larger in reality. Means further I shall be guided by such logic: I will take the number of sales from February to July (take the month of February as a spare, since some devices could first travel) Wheels will be loaded according to the following logic - inmoshen v5, v5f - one wheel; v3c, v3pro, v3s - one wheel, msuper680 and 820 - one wheel, acm680 and 820 - one wheel and tp. Conclusions look at the very bottom of B-) March GotWay 1. ACM 680 - does not turn on - controller replacement 2. ACM 680 - does not turn on - button replacement 3. MCM4 - do not peep - replace the peeple 4. MSuper1600 - does not turn on - motor replacement, replacement of the controller 5. MCM4 - the wheel twitches - the soldering logic 6. Msuper1680 - does not turn on - controller replacement 7. Msuper1680 - burned-out controller replacement 8. Msuper1680 - does not turn on - controller replacement KingSong 1. KS16 - does not turn on - controller replacement 2. KS18 - does not turn on - controller replacement Inmotion 1. V3 - does not turn off: dance: - display replacement 2. V8 - does not turn on - replacing the button connector 3. V8 - LEDs are not lit - LEDs are replaced 4. V8 - does not turn on - controller replacement 5. V3 - does not turn on, does not charge - replace the controller, battery 6. V3 - noise at driving - bearing replacement April Gotway 1. Msuper1600 - does not turn on, the handle is broken - the controller is replaced, the pen is replaced 2. Msuper680 - twitches - resolves the logic 3. ACM680 - does not turn on - controller replacement 4. MCM4 520 - does not turn on - controller replacement 5. GotWay ACM - does not turn on - controller replacement 6. MCM4 - does not go more than 12 km / h - controller replacement 7. MCM4 - extraneous sound when driving - bearing replacement 8. MSuper1600 - does not turn on - controller replacement 9. MCM4 - does not turn on - change the power button 10. Msuper1600 - does not turn on - controller replacement 11. MCM4 - jerks when driving - motor replacement KingSong 1. KS16 - does not turn on - controller replacement 2. KS16 - does not turn on - replace the fuse 3. KS14B - does not turn on - controller replacement 4. KS16 - does not turn on - controller replacement 5. KS16S - vibration at driving - alignment of a rim 6. KS16 - turns on once - button is replaced 7. KS16 - does not turn on - controller replacement 8. KS16 - does not turn on - replace the fuse Inmotion 1. V3 - does not turn on - battery recovery 2. V8 - the engine lock button does not work - reassembly 3. V5 - turns off - controller replacement 4. V5 + - at 11 km / h raises the pedals - replaces the controller 5. V5f - noise during driving - bearing replacement 6. V8 - does not turn on - replace the controller, replace the battery May GotWay 1. Luffy - does not turn on - controller replacement 2. MCM4 - vibration while driving - controller replacement: neg: 3. MSuper1600 - not calibrated - controller replacement 4. MSuper1600 - ignition controller: laugh: - controller replacement 5. MSuper1600 - does not turn on - controller replacement 6. MCM4 - short circuit - replacement of the controller 7. MSuper1600 - does not turn on - controller replacement 8. MCM4 - does not work correctly - soldering of the sensors of the hall 9. MSuper1600 - does not turn on - controller replacement 10. MSuper - does not charge - re-solder charging terminals 11. Luffy - not calibrated - controller replacement 12. MCM4 - twitches when driving - Resolving Hall sensors 13. ACM680 - twitches when driving - soldering logic 14. GotWay Monster - does not turn on - controller replacement 15. GotWay Msuper680 - does not turn on - controller replacement KingSong 1. KS16 - does not turn on - replace the fuse 2. KS16 - does not turn on - replace the fuse 3. KS16 - does not turn on - controller replacement 4. KS14B - does not turn on - controller replacement 5. KS14B - does not charge - solder battery 6. KS14C - flooded with water - motor replacement 7. KS14B - does not charge - balancing the battery Inmotion 1. V3 - does not charge - battery replacement 2. V8 - does not charge - soldering of the battery cables 3. V5F - not calibrated - controller replacement 4. V5 - does not turn on - flashing 5. 4. V3 - does not turn on - display replacement June GotWay 1. ACM - does not turn on - controller replacement 2. Msuper 1600 - does not turn on - controller replacement 3. Monster - vibration while driving - soldering of the sensors of the hall 4. Msuper 1600 - does not turn on - controller replacement 5. Msuper 1600 - not going - controller replacement 6. Msuper 1600 - controller controller - controller replacement 7. ACM - knocking on the road - soldering the controller's elements 8. MCM4 - Кз controller - replacement of the controller 9. Msuper 1600 - does not turn on - controller replacement 10. Msuper 1600 - does not turn on - controller replacement 11. Monster - vibration while driving - soldering of the sensors of the hall 12. Monster - does not connect to the application - replace bluetooth 13. Msuper1600 - strong vibration at driving - replacement of the controller, soldering of sensors of the hall KingSong 1. KS16 - does not turn on - controller replacement 2. KS18 - does not charge - re-solder battery 3. KS14B - does not turn on - controller replacement 4. KS18 - not charging - soldering the charging connector 5. KS14C - does not turn on - controller replacement (failure to repair) Inmotion 1. V5 - does not turn on - battery replacement 2. V3pro - twitching in motion - Resolving Hall sensors 3. V8 - does not turn on - replacement of the power button 4. V3pro - does not charge - solder battery 5. V8 - does not turn on - controller replacement 6. V8 - disconnected during driving - controller replacement 7. V8 - does not charge - battery replacement 8. V8 - does not turn on - controller replacement July GotWay 1. ACM680 - does not turn on, the case is broken - replacement of the controller, housing 2. Msuper 1600 - does not turn on - controller replacement 3. Msuper820 - does not turn on - controller replacement 4. ACM - extraneous sound while driving - Resolving Hall sensors 5. Msuper820 - extraneous sound when driving - Resolving Hall sensors 6. MCM4 - K3 on the board, does not turn on - controller replacement 7. Msuper1600 - does not turn on - controller replacement 8. Msuper V2>: D - jerks when driving - controller replacement 9. Msuper820 - does not turn on - Resolving Hall sensors 10. ACM - does not turn on - controller replacement 11. Msuoer1600 - knocking on when turned on - controller replacement, hall sensors 12. Msuper680 - does not turn on - Resolving Hall sensors 13. Msuper820 - does not turn on - controller replacement 14. MSUPER 1600 - Msuper1600 - does not turn on - controller replacement 15. MSUPER 1600 - Msuper1600 - does not turn on - controller replacement 16. Msuper1600 - does not turn on - controller replacement KingSong 1. KS14C - does not turn on - controller replacement 2. KS18 - does not turn on - Reset the power button 3. KS16S% -) - does not turn on - controller replacement 4. KS18 - low mileage - battery balancing Inmotion 1. V5f - does not turn on - replacement of the power button 2. V5f - does not turn on - replace the fuse 3. V8 - noise during driving - soldering of the sensors of the hall 4. V5 - driving noise - bearing replacement 5. V3C - does not turn on - battery replacement 6. V5F - does not turn on - controller replacement 7. V8 - does not turn on - flashing 8. V8 - does not turn on - replacement of the power button 9. V3 pro - jerks when turned on - controller replacement 10. V5F - does not turn on - controller replacement 11. V5 - does not turn on - replacement of the power button 12. V8 - does not turn on, resampling the hall sensors 13. V8 - the button for locking the motor does not work - the button is replaced 14. V8 - disconnected during driving - battery replacement 15. V5F - does not turn on - battery replacement 16. V3pro - power-on error - controller replacement Conclusions: 1. Here there is a full percentage of marriage for any service call due to electronic or electrical problems (here, mechanical damages and tire punctures are not taken into account) The percentage of rejects from sold devices during the period February-July 2017 is indicated. In brackets, my comments are highlighted by a frame. Inmotin: V8 - 4.8% (excellent quality: wow :, there were a lot of sales) V5, +, F - 5.88% V3c, pro, s - 7.8% KingSong KS14B - 3.33% KS14C - 15% (due to low sales, as the model changed to 14d) KS14D - was not in the service (selling was enough) KS16 - 7.33% KS16S - 1.12% KS18 - 17,24% (transition to sports) KS18S - was not in the service (sales were moderate) GotWay MCM4 - 18.57% ACM 680,820 - 36,6% ACM 1300 - 35% (a small number of sales, according to my personal feelings this is the best of the gothweb) Msuper 680,820 - 11,11% (the average number of sales, here statistics is more visible) Msuper 1600 - 36.98% (every 3 users of a pregnant soup met in the service, the statistics could be a little lower, because in my memory there were repeated calls for the same problem) Monster - 23.4% (a small number of sales) 2. And here now I will show the statistics of the marriage in percent only on the controllers and sensors of the hall. Inmotin: V8 - 1,97% (the standard, as I already said) V5, +, F - 2.71% V3c, pro, s - 2,12% KingSong KS14B - 2% (reference wheel standard) KS14C - 10% KS14D - was not in the service (selling was enough) KS16 - 3,33% (the percentage of the marriage is halved due to the fuse on the board) KS16S - 1.12% (reference) KS18 - 6.89% (the percentage of rejects decreased threefold, 18 of the usual words had problems with the charging connectors and balancing the battery) KS18S - was not in the service (sales were moderate) GotWay MCM4 - 14.28% ACM 680,820 - 26,6% ACM 1300 - 14.28% (all problems are of the same type - controllers or hall sensors) Msuper 680,820 - 9,25% Msuper 1600 - 34,24% (every 3 users of a pregnant soup met in the service, the statistics could be a little lower, since in my memory there were repeated calls for the same problem) Monster - 23.4% (a small number of sales) Final output: Let's break our conclusion by brands. - Inmotion is very good with the quality of monocols and this statistics confirms this. Sales were many and the statistics complete. Inmotion keep it up, there is much to grow. But in general. Well done. - KingSong - the average percentage of rejects for old models (14c, 16 and 18). And the phenominal results for the new sports versions. I also want to note separately 14B - the best wheel for entering the monocoque tusovka in relation to quality. You pay a little, you drive sadly, but not in service: laugh:: laugh:: laugh: - Gotway - it's bad ... We need to work on quality. No model can compete in quality with either kingsong or inmoshenom. There are weak attempts at Msuper680, 820, but not enough. Msuper1600 - generally horror. 84B and the controller from gothve is a nuclear device. As I have already written many times - buying goths makes sense only when you understand what you are taking. Exceptionally speed. If you are not about the actress, unfortunately, goths should not be considered. I very much hope that the gothwa will draw its quality to the level of the standard set by Inmotion and KingSong. P.S. If you have something else to count or see - ask questions in the topic - I will try to find answers to them. Since October 2017, we will have a new program for recording faults and everything will be much better and clearer in it.
  3. 28 points
    Hello All, It's been awhile since i've been on here but thought why not share my thoughts on this wheel, I was lucky to get. It's a prototype that was sent to me by Gotway America to keep. I decided to share my experiences with everyone. www.Gotwayamerica.com I also want to thank @houseofjob for helping me put this video together! I cant give an review since I just got it and want to spend time with it. Here are some specs. Motor - 1900watt Battery - (this model) 1020wh Built in Trolley - yes Light Belt - yes (reminds me of the ninebot days) Weight - 42.8 lbs Brighter head light compared to previous models. 4 pin charger - same as the Msuper V3s+ 84v Max speed so far - 30mph! Built in dual fan- silent could barely hear it. I feel like this wheel have some type of shock absorption.. Not sure how to describe it but it goes over cracks and bumps with easy. Very comfortable to ride although when trying to ride on 1 leg i'm experiencing a slight pain on my shin. Not sure if its something I have to get use to or is it because of the thin padding that was placed there. I created a video that should help with how it looks and test rides. Hope you guys like it. Also motherboard is now placed on the top of the wheel instead of the usual side next to the batterie. Cables seems to look well connected here are some pics. Again i hope this helps.
  4. 27 points
    It's with sad news that I'm here to say that my brand new (now scratched to hell) MSuper V3s+ is afflicted with the now infamous Gotway oscillation syndrome. I had just picked it up personally from @Jason McNeil a couple of days ago while he was out in California inspecting his latest delivery from Gotway. He's a great guy to hang with btw, and we (Jason, myself, and @Sven) had a fun little ride in some local hills. Andy, you need to post that video you made! Of course I tested mine a day ago by riding (slowly - which is key to remember) over various bumps, curbs, etc. No problems. Yeah! But this morning was my first opportunity to take it for a serious ride. I setup my camera and filmed a short mini-review introduction to my new MSuper (God I wanted to love this wheel) and then took it out on the road. As you'll see in the video below, about 3 minutes into the ride I'm on a sidewalk, probably not going faster than 15mph. I travel across a street and up on to the sidewalk, and that transition was enough to cause it to instantly oscillate and throw me off the wheel. My take away is that the wheel has to be traveling at a fairly good clip for this to happen. But as you can see, I was not exactly traveling at an extreme speed. Jason is screwed with his recent shipment, and I must say anyone who has received a unit within the last month or so is risking their skin if riding the wheel faster than 10mph. Even though I say in the video that I'm probably going to ride it, I'm not. As I rode home I couldn't make myself go faster than 10mph for fear of the oscillation. There is zero warning. There's absolutely no fun riding a wheel under those conditions. I have no clue how Gotway is going to prove any recent wheel delivery is without the problem. They clearly lied to Jason regarding his shipment, and he must be one of their best dealers. When I get a new control board (I assume), how will I know Gotway did anything. Who wants to gear up and ride 15 - 20 mph into a bump to test it? I'm sure I'll be more open to the idea after a few days, but not now. My left wrist and hand is getting worse as I type this Well guys, I only have my Monster and KS14C to ride now, and summer months are upon us. What a bummer. Enjoy the video The thumbnail is 1 second before the crash - ouch.
  5. 26 points
    A little story some of you may find interesting... Yesterday I was taking a mid-afternoon ride along the beach on my KS14C. Beautiful Southern California day. As I was approaching the Hermosa Beach Pier I spotted two wheelers in the distance! Amazing. In the year that I've been involved with EUC's I've never come across a fellow rider, let alone two. As I approached from behind (they were traveling at a leisurely pace) I saw that that they were a young couple, in their early 20's I would say. He was riding an MCM and she was on a two wheeled Inmotion wheel. I smiled and waved as I rode past them. Needless to say they were really surprised. We stopped and chatted for a nice long time. The MCM was bought from Dion (@myfunwheel) and the Inmotion from @Jason McNeil (EWheels). All within the last couple of months. They had no knowledge of the forum and our local group rides that I organize. I think that I may have found a couple of new recruits. Hopefully they will join the forum. Now Brian, he was a little frustrated with his wheel because it would always tilt-back, and was about as fast as the Inmotion (i.e., not very fast). I took it for a little spin and sure enough, tilt-back must have been set to 10mph or less. I whipped out my phone and reconfigured his wheel (with his permission of course). Immediately he saw a huge change in his wheel. It felt like he just received an updated EUC. He looked very happy as he started zooming around (I turned tilt-back off). We rode together for a bit more before we went our separate ways. I'm hoping to see them during our meetup with @The Fat Unicyclist In hindsight I thought it must have been very unique from their perspective to have some guy pass them by on another wheel, stop, and reconfigure their wheel to make it perform much better, and then zoom away. I hope to have more encounters like this in the upcoming years
  6. 26 points
    It had to happen eventually. This morning I met Andy (@Sven) at Chino Hills State Park for an exploratory ride. Neither of us had ridden this area before. Andy had his Monster and I was riding my ACM today (it can climb any hill). The ride started nicely enough but we eventually started on the dirt and gravel trails. During on epically long very steep section Andy's Monster overheated with a resulting tilt-back, and within 5 seconds my ACM self-destructed. It was a long hike out In this video (thanks Andy for all the additional video footage) you can see the ride and where I crash and burn as the ACM gives out on me. Then, back in my workshop I open the ACM and show the carnage inside (massive amounts of melting connector housings and wires. Oh, and the control board is toast. Seeing the melted wires first hand (and my riding weight is 170 pounds) tells me that I will never again (until they make design changes) ride any of my Gotway wheels for extended (>15 seconds) periods up very steep hills. It's clear that the insulation isn't up to the task. Mind you, I'm talking very steep hills, where you are crawling up. Enjoy the video
  7. 25 points
    @Jason McNeil has been out in California the last few days, re-flashing all the ACM's and MSuper's (40+ I think) before sending them back out to the customers. When I finally was able to get to his makeshift workshop with my MSuper, mine was the last one. It took about 10 minutes to open, remove the bluetooth module, plugin the Gotway firmware loader, and download the fixed code (which took maybe 5 seconds to download). This is an interesting aside. Gotway had originally told Jason that they had caught his shipment before it went out the door, and re-flashed all the boards. Fast-forward to now when Jason is re-flashing all of the wheels. The process involves taking a razor blade and slicing the silicon that is holding the Bluetooth module to the control board, so that the Bluetooth module can be removed. Jason discovered that about one third of his 40+ wheels had the silicon sliced. This means that Gotway fixed 1/3rd of Jason's wheels, shrugged, and decided to ship the rest without fixing. Who knows why. Maybe they had a deadline to meet and ran out of time, or the workers told management that everything was done so they could go home. Who knows, but it's rather amazing. I've ridden my fixed MSuper in the mountains above Los Angeles for about 45 miles between yesterday and today. Lots of fast, rough riding with bumps galore. No problems. My final test was to repeat the scenario that threw me off the wheel two weeks ago. Here's the video... Everyone who is receiving @Jason McNeil's wheels in the next week or so can rest assured that they have a solid wheel that can take abuse. I'm back to lovin my MSuper
  8. 23 points
    Greetings Forum, I'd like to apologize for not keeping up here this month, it's been an especially busy period & I've been stretched somewhat thinly lately. I am delighted to announce @Joey Serrin will be joining eWheels. Joey has established a phenomenal reputation with his exceptional know-how, abilities & creative inventive mind that will help increase the capacity & reach of the business. Joey's mastery of the Electric Unicycle will ensure eWheels will also have unrivalled servicing & repair capabilities, as well as improved communication times for our Customers. Over the next month we will be offering several new accessory lines, such as custom pedals, improved padding, & handle kits for the King Song 18S & Gotway Monster, there are some other exciting projects in works which will be announced over the coming weeks.
  9. 20 points
    I'm going to collect my ongoing thoughts about this wheel on this page. I just finished my range test and feel that I can offer some solid opinions about this wheel. BTW, I'm somewhat of a Gotway fan (did I understate that ?), so bear that in mind. So here goes... I own a Monster, MSuper V3s+, ACM V2s, and KS14S, and have ridden just about every other mainstream wheel that has been produced in the last couple of years (group rides are great ). The Mten3 is the funnest wheel that I've ever ridden. Is it the fastest? No. Does it have the most range? No. But is it fun? My God is this a fun wheel During my range test I rode it mostly on paved trails and sidewalks, but did a fair amount of dirt trail riding and grass riding. When on the flats riding straight I was doing 15mph (24km/h). It was not struggling, but I did not feel comfortable going faster because the wheel is super-super-agile and therefore not very stable unless your road is perfect and there is no wind. My range test lasted 2 hours 15 minutes and covered 20-1/2 miles (33 kilometers). Tell me that is a respectable distance to cover on such a tiny wheel. Over 2 hours is a lot of fun time. My riding weight is under 170 pounds (77kg). For 18 miles (29km) I could do anything. Then under strong acceleration I started getting the beeps. The last ~mile was limp mode - 7mph (11.2km/h) or less. Unlike KingSong, Gotway lets you really have fun all the way to 15% battery (this is my only KingSong dig - sorry guys ). The wheel feels very solid when accelerating, and stops on a dime from high speed. At all times it felt that there was extra power in the tank. It really is like an ACM bottled up in a tiny package. When going up hills it has power, power, and power. With this Mten3 I finally feel like my feet are one with a wheel. It's OK when traveling at 15mph (24km/h), but is amazing below 10mph (16km/h). It feels like you are standing on a little ball that glides effortlessly wherever you think you want to go. Let me give you an example. When you're on a sidewalk and have to stop for traffic and wait until you get the walk signal, that's not the funnest of times is it? Either you're off the wheel or holding on to a post. Well not with this wheel. I actually found myself looking forward to getting a red light. I am not exaggerating! I can effortlessly do little 360 turns in the space of my body (I'll post some more video on this page later), and it's fun. If you can ride backward, this wheel is killer. I can do tiny pendulums all day long. So this wheel strangely is funnest when you're waiting. I'm doing tons of little 360's, pendulums, etc. The last couple of busy intersections that I crossed, I actually did a couple of mid-intersection 360's to give the people waiting a little show Effortless and very fun. I'm telling you guys, this wheel is no joke. You owe yourself to get one. I truly do not believe you would regret it. It would bring utter joy to your riding about town. And again, 18 miles (29km) of solid fun is very respectable. I'll post additional info on other features on an ongoing basis. I'm off for some night riding as soon as the wheel is recharged
  10. 20 points
    Uuuuh, this is gone be a long one ... but since you asked ... lemme try try to shed some light on the extent of quality assurance (QA) we may realistically expect from our wheels. And why I am rather surprised, that 9 out of 10 eWheels seem to work flawlessly. Visiting the GotWay fab in May 2016, I was expecting something more than what I had seen on the usual pictures. You know, those 4 long work benches showing GW wheels in various stages of assembly. But: that's pretty much it! There's a small office area with people working on PCs, a couple of soldering places with little else but a soldering iron and some reels of cables and adaptors and some side rooms with loose piles of motors or cartons with supplies or finished products readied for shipment. And, at the time, a single prototype of the new MsuperV3 kept in the directors office. I have not seen any test bed (like for example the stationary test rig of electro-sport.de), no sophisticated measuring equipment (like an oscilloscope), no specialized assembly setups (other than electric hand tools), let alone any automated machinery, robots or the like. I have probably seen like 15 people working on site and was told the staffing goal for 2016 to be 30 employees. Also notably absent: Signs with working instructions, parts lists, check lists, tables with spec limits or the likes - very basic measures of QA I'm familiar with from "back home". "Here's a picture of what it should look like. If your work result looks different, we likely got a problem". Now, I may not have seen everything or was occupied by other things as I got all excited when I was allowed to test ride the MsuperV3 prototype in between the assembly lines. But recent events seem to confirm my observations at the GW "manufactory". Speedyfeet reported receiving an entire delivery of Msuper3's with left pedals being mounted to both sides of the wheels ("What's wrong with this picture?"). A friend just took delivery of a new Msuper V2 this month: Bluetooth didn't work. He found the little BT "piggyback" board thoroughly glued in place on the main board (as it should be), but its connector pins were in the wrong position (indicating 1. a design flaw as such connections should be coded, 2. sloppy assembly without control steps and 3. the absence of functional testing of the final product). Speculation time: what QA-risks are we exposed to: 1. Product design: Other than the famous pictures of the small indoor incline test ramp used by KingSong and IPS, I have not seen any special testing setups. With any new design, I have to assume, that some dare devil test rider takes a prototype to the streets and off-road tracks and maybe some puddles of water. If it survives the abuse those test riders can come up with, it's ready for production. While it is touching to see an asian tester taking another person on his shoulders to approximate the weight of a "westener" during a test ride, this is of course worlds apart from systematic and reproducible testing under all conceivable usage and environmental conditions. 2. Component/final assembly: there might be different "shades of grey" between manufacturers, but I would be very surprised to find automotive like standards with any present EUC producer. This is the area, where exceptional dealers like @Jason McNeil, @1RadWerkstatt, Speedyfeet and others can help with additional checks of the products they receive. But frankly, we can hardly expect them to perform full functional testing and still sell at affordable prices. The ones moving higher quantities may be able to persuade manufacturers into higher QA awareness and efforts. 3. "Supply Chain Management": there's something very unique and fascinating about Shenzhen: the "Huaqiangbei electronics mall". Picture many, many warehouses, each one the size of a larger Macys department store and each one specialized on electronic components. Like an entire Macys for LEDs. Or logic ICs. Or passive SMD components (resistors, capacitors, etc.). And each of these warehouses is composed of a myriad of tiny stalls, stuffed all the way to the ceiling with, say, SMD reels with diodes. That's a "Maker's dream"! Just like we hit a grocery market with the recipe for tonight's dinner, you can go to these warehouses with a parts list for your ewheel controller PCB and come back home with all the components you need to produce 500 of them (and still money left for groceries). And I'm sure, you'll find an infrastructure of services to produce your PCB and mount the items from your shopping bag to it just as easily. (If you are interested in these amazing capabilities, the flowing boundaries between "Makers" and commercial production and the fascinating spirit that goes with it, I can recommend spending an hour here: https://www.youtube.com/watch?v=SGJ5cZnoodY). To me, this convenient electronics market place is both a huge advantage for rapid product development and a dangerous burden for quality management of the production. Since you cited Toyota's quality as a reference point: I worked for many years in the semiconductor industry, producing components for automotive applications. Quite regularly, we have seen audit teams of the big car makers turning both the entire production line upside down and also scrutinizing the IT side of QA. Many QA improvements were introduced as a direct consequence of those audits. And when the chips are delivered to such clients, a matching huge compilation of data from measurements and testing is transferred in parallel to the client. And there have been a number of embarrassing moments, when clients analyzed those data sets and pointed out weak spots in our production line, we did not find ourselves. Just two basic examples: Look at these 2 result sets from temperature testing. Both are perfectly inside the specified limits, i.e. the chips passed the test. Which of the 2 would you expect to fail with just a bit higher or lower temperature than actually tested? Correct, the second one. It is still a sellable product, but you would not ship that one to your quality sensitive prime customer. Second example (so called "Part Average Testing" or PAT): Say, you produced 1000 chips and measured a specific parameter. Again, all those dots up there are well inside the spec limits, so all chips are "good". But it's easy to see, that 998 of the chips group nicely in the same area and just 2 stand out. Which would you expect likelier to fail? Even without any knowledge of what caused those 2 "outliers", they would never be shipped to an automotive customer for any safety critical application (the company I worked for used them for destructive testing to find the cause of the deviation, others just put them in different sales channels). Now take your guess, which category of components will end up in the bazaar like shops in the Shenzhen electronics market? Taking an analogy with 3D printers: Nowadays, you can buy a printer with good QA from upscale brands like Ultimaker, formlabs or Prusa and be fairly sure it works as advertised. Or you buy a "knock-off", built from those Shenzhen warehouse components with no Supply Chain Management and little QA for as little as 10% to 20% of the price. I was surprised to find some extra sensors, switches and even a spare mainboard thrown into the parts bag of kit printers I bought, obviously in expectation of a high component failure rate. Bottom line: Bashing GotWay for quality screw-ups is tempting, but I am rather surprised, how many good wheels they manage to ship out under these conditions. Only very few of us would be willing and able to foot the US$5000+ bill for an ACM built to automotive quality standards. While rightfully demanding QA improvements and honoring the efforts of responsible distributors for the good cause, we need to stay aware of the fact, that we are all potential crash test dummies riding prototype devices to some extent.
  11. 19 points
    Look what the mailman brought us today. A brand new KS14S from KingSong, where the S stands for Sport. This is the latest Electric Unicycle from KingSong and I’m pretty excited as one of the first to review this unit. Let me know what you think about KS14S?
  12. 19 points
    Hi guys, I wanted to share this recent adventure, and give you some advices so that the same thing won't happen to you... So I was riding alone, getting some fresh air as I always do during hot evenings, I had my gotway MCM4 that tops at 22km/h (this is important for after). After riding for about an hour in the forest, the dark was here, at about 10pm. I was heading back home on a bike lane, passing next to an inhabited complex for moderate revenues, when out of nowhere 6 youngsters came out and started yelling at me (can't remember exactly what), then started chasing me. I accelerated as fast as I could. I didn't even hear the final alarm but it must have been very brutal, because the EUC had no more power to keep me balanced and I fell off it, luckily I was able to run, the EUC rolled into a bush, and the 6 guys catched up with me. One of them threatened me with a knife, another had a cutter, they asked for my cellphone and money, I gave them what I had on me, but couldn't find my cellphone. The 6 guys where taller than me, and even though I had an electric shocker, I didn't use it because I was too afraid to get stabbed. They left very quickly, luckily they didn't take my EUC, after a while I headed back home, my legs where shaking from the stress, I have already had some agressions on my EUC but they never succeded until now. I filled up a complaint today at the police station, but without a good description (I wasn't able to remember the faces of my agressors because it was dark and I was under stress) they told me there almost no hope to find them. From now on, I won't go out at night with a slow and weak EUC, I think that if I had my ACM for example I would have gone away, I need to avoid some areas but I couldn't guess it would happen in this particular one, so I'll look out for groups of people. I highly recommend to ANYONE to be aware (in France at least) of these things happening. I'm glad they didn't take my EUC, I guess they thought it was broken..and it didn't sustain any major damage, I had some padding around it.
  13. 18 points
    The world needs a new hero to save us from those soon to be evil Boston Dynamics robots...
  14. 18 points
    About a year and a half ago I purchased an inspire from DJI which is the biggest drone manufacturer in the world so I decided to join the forum because the inspire is not a beginner drone, shortly after joining I noticed that people on there are mean, nasty and very very rude, it seems like you had to be an advance pilot to join the forum because the beginners got treated like S.H.I.T. Including me. Guys on there actually started threatening each other. It was not a good experience to visit at all. This forum is the total opposite you guys are very very nice and very helpful no matter how simple or dumb the question may be, I feel very comfortable asking anything on this forum, some guys even go above and beyond to help others make a purchase decision and always give their honest opinion, it's a joy to visit this forum and I have to admit some of you guys are pretty funny ?. In closing I just wanna say keep it up guys, really appreciate it ??
  15. 18 points
    Poor guy, I'm sending him out a set of replacement parts...
  16. 17 points
    Short video competition with some mild bloopers at the end. First time seeing hoverboards ridden on one wheel.
  17. 17 points
    Paris, cars free day. 233 participants............
  18. 17 points
    Hi, everyone, Rockwheel has been created for the fifth year, and it is honored that it has not yet closed, after all it is not a profitable industry, in 2012 I had the first Solowheel wheelbarrow after the start of 2013, I gave up The original business, all devoted to the start of the operation of Rockwheel, because I love, my first wheelbarrow is gear motor drive, because I like it to accelerate the sound of metal roar, so I named Rockwheel. Natural air-cooled system, we tested 30 minutes of continuous climbing, the controller temperature of 58 degrees Celsius,
  19. 17 points
    As a fervent fan of your products I implore you to consider adding one or more of these improvements to your future wheels: Replace the single tone beeper with a proper speaker and vary the loudness of the beeps based on the speed of the wheel. When we ride your wheels fast (like your wheels are meant to be ridden) we often cannot hear the warning beeps because of the wind noise in our ears. Provide a means to turn off the beeper. Sometimes we can ride very far on a low battery and we are forced to hear the constant beeping even though we are traveling at 5 mph. This annoys us and it annoys the people that we ride by. Provide additional hardness settings. Some people think your Sport mode is still too soft. Why not please everyone? Replace the single brightness LED with a multi-level LED, just like the cheap pocket flashlights that everyone owns. The brightest level should be much brighter than your current LED lights, which are just about useless for riding at night. And please keep the flash mode, it's a great safety feature for daylight riding. Provide a battery indicator that can be seen by the user when looking down at the wheel. The best EUCs in the world (MSuper, ACM, and Monster) require the user to step off the wheel to see what their battery level is. In a perfect world it would be a multi-digit LED display that would show the battery percentage. Provide a fast charger for your high capacity wheels (e.g., 1300wh and above). We don't like having to wait 10 to 20 hours to charge one of your fantastic wheels Change the design of your wheel shells so that the screws don't snap in half after a bad fall. Your wheels have a great reputation for performance and desirability, but they also have a bad reputation for cheap screws that snap in half too easily. Your competition doesn't have this problem, so show them that you can make the best shells available. Your wheels are so powerful that we love to push them to extremes. Show the world that you can make a shell that is tough and can take the abuse. Many people like the option of wider tires, and have even gone to the extreme of cutting your beautiful shells to accommodate a wider tire. Why not design for wider tires and provide that as an option. Trolley handles are so useful, and you demonstrated how nice they can be with your super popular MSuper V3. Why not make them standard in all of your future wheels. People would love you for it. You may be the first manufacturer to standardize on one size pedal brackets. Now provide a range of pedal options that can be interchanged between all of your wheels. Some of us have small feet and some have large feet. People love having options to pick from. A built-in kick-stand would be extremely useful, and you would leapfrog all of your weak competition forever if you were the first to add one. Add a cutoff switch to the bottom of your handles. It's such a nice feature to have when having to lift a wheel over an obstacle Add bluetooth speakers, but please don't use them yourself to make announcements to the user. When appropriate (Monster, MSuper, etc) add a mudguard. Maybe even a removable one. Surely you've seen the 3D printed mud guards that people have been making themselves for the MSuper? So many people have difficulty with your newer phone apps. Many of us don't like to depend on having an Internet connection to use the app when riding or configuring our wheels. Your wheels are the best for riding in remote areas where sadly there is no Internet. Please keep the ever useful USB port - such a great feature of your wheels Instead of the dozen or more diagnostic beep codes that nobody understands or even knows about, how about providing this diagnostic information to the phone app, or a voice prompt using your new bluetooth speakers. I don't know if you will ever see this letter. I'm your biggest fan and want you to succeed and destroy all of your meager competition. Maybe some of my suggestions can help you stay the number one EUC manufacturer in the world. I'm rooting for you
  20. 17 points
    Look what the cat dragged in Well, back to work...
  21. 17 points
  22. 16 points
  23. 16 points
    I've purchased 4 wheels from Jason at ewheels and I have experienced nothing but outstanding service. He has gone way over and beyond to make me happy as a customer. I hate reading comments trying to tear down his character saying he is just selling Gotways or any wheel for the money. If you read the many posts from him on this forum you will find that he has been an advocate for EUC riders and has pressed companies like Kingsong and Inmotion to make changes for the safety of the riders. Many of the safety characteristics raved about in Kingsongs was from Jason's constant input over the last couple of years. I'm glad to see ewheels selling Gotways now so maybe we can see the benefits of his tireless efforts in improving the QC at this company as well. We all love riding wheels and we all want to be safe of course. Let's keep our focus and efforts on pushing these companies to make the right improvements.
  24. 16 points
    I had a Monster Energy drink this morning & so embarked on the ambitious project of completing the 'Choosing the Right Battery Pack' Blog article. Euphoria has since worn off, will adding additional text tomorrow... https://www.ewheels.com/choosing-an-electric-unicycle-with-the-right-battery-pack-for-you/ There are now dozens of different battery cells being made by the big manufacturers LG, Samsung, Panasonic, & Sony. For use in an application like an Electric Unicycle, the two qualities that make a particular cell more suitable over another are it's power output (Amps) & energy density (Ah). Until fairly recently there was an inevitable trade-off between either high-powered cells (e.g. Sony VC3/A123) and energy dense cells—there's the example of the Panasonic NCR18650B, which had capacity, but could only deliver 2-3 sustained Amps. What has been one of the key drivers in powering the Personal Electric Vehicle revolution, is the introduction of >3Ah (>10Wh) batteries which can ALSO capable of sustaining high currents above 10 Amps. The Battery cells which are most commonly found in Electric Unicycles are shown above. Although lacking in capacity & somewhat outdated, the Samsung 22Ps are still quite common for many Self-Balancing devices because the cost per cell is very low. Ideally, a smaller battery pack (<32 cells) would have more powerful cells, like the HG2 (found in our small 12" IPS a130s) or the VC3 (used in the Solowheel) to provide the necessary sustained power even, if the speeds are modest. Because the cells are nearly all capable of the same 10A power output, the calculation then becomes one of how many battery cells you need for your requirements of speed & Rider weight—hill climbing expectations are also important factor for power, but to keep it simple, it's has not been shown here. These figures are probably on the conservative side, but for a device where getting enough power is the vital for survival, erring on the side caution is preferable. This next illustration shows how the battery cells are configured, their capacity & power outputs in several popular Electric Unicycles. There are two defacto standardized voltages for most Wheels: 67.2v, which is comprised of 16 cells in a series & 84.2v, with 20 cells in series. Good arguments exist for both voltages, but for higher performance Wheels, the increasing trend is converging towards the higher 84.2 voltage. This is mainly on account that motors of higher voltages are capable of higher speeds with better brown-out safety margins.
  25. 16 points
    So, I bought my EUC a few months ago and, besides trying it a few times after it was delivered, I kept putting it off on account of the weather. (In hindsight, that was a mistake as I had unlearned everything I had learned back then.) These past few weeks have been fantastic, weather-wise, here in the Seattle area. So, I decided it was time to try to start learning again - in earnest this time. My legs are sore, my back is sore, and while I managed to avoid any falls, I did twist an ankle. Yet, for the first time this morning, I managed to start from a standstill. No walls, no rails. Just me and my apparently awful sense of balance. Better, I repeated it several times in a row and I am happy to say that I can get on my EUC on my own, unassisted, and actually travel more than a few feet. I already know I can actually travel on it, I just have to master the transition from jumping on it to traveling forward. I'm still wobbly and I've still got a long way to go. But, I can finally see how it can be done. It's gone from seemingly impossible to "maybe." I'm pretty happy with maybe.
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