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EUC

Found 9 results

  1. Hey gang, What is the best model for heavy weight? I weigh in at 250 and plan to use mine on some inclines, so I'm curious as to what models are best.
  2. Hello, French Wheeler, but not as good as some other, I had a bad accident (broken shoulder, now with some metal!!) with my small ninebot one E+... and I spent some time in order to understant why we face cut out or accidents. So, on the forums, I could recognize 4 kind of accidents : 1- Pilot did ignore alarm.... nothing to say.... too optimistic, 2- driving accident (bumps....), 3- Sudden cut off.... (looks like my accident, but I'm not sure it wasn't a technical failure), 4- Technical failure. Rare since construcors did improve the safety...or correct bugs (BMS for instance). For the point 3, I did some calculation, that shows that specification of constructors seems to be far too optimistic, and the speed alarm does not consider the wheight of the pilot... which has a huge impact. What I did consider is a common case of accident : you run on flat road, no alarm, straight... and you have a small slope (not big, couple of meters long!). So immedialtely, since you do not consider you have to slow dow, your Wheel has to give all power in order to maintain the speed during the slope. In this condition, considering a 10% slope (not big at all, it is a 6° angle road), what is the maximum speed you can run? I did consider air drag, which has a big influence over 30 km/h), the solpe that I consider as a safety margin, and the wheight of the pilot. The power was considered as constant whaterver the speed is (optimistic), and, since nobody know the duration of the peak's power, 0,5 second for this peak (which is only use for bumps in fact!). Yield of the Wheel in order to transform electrical energy to mechanical energy is estimated at 75% (tests on some gotways). What do we calculate show that with a 500 W, at 25 km/h, you're not save at all... except if you are a kid. On a gotway ACM our MS3, 45 km/h is not a realistic speed since air drag consume most of the power... What do you think? Conclusions : - Power, and slow speed is the key for safety... - Adapt speed limit cosidering your wheight, - If you want to keep the hight speed limit, go quiet, and in all case, use protections!!! Of course, this is only my caclulation, an you can disagree! EUC safety speed.xlsx
  3. Since the beginning I have been pondering on how to weight balance my EUC to minimize the wobble created by an unbalanced wheel. "Beginner legs" or tense legs do ofcourse cause wobble, but I don't want the wheel to add to it. This has also been asked a few times here, and today I've finally found a decent, reproducible way to do this! You need a kitchen scale with a precision of 1 gram, and ofcourse the weights. I bought the weights from a local store that sells parts and accessories to cars and motorcycles, among everything else. First determine which side to use for the weights: 1. Put a strip of masking tape to the tyre, from the air valve across to the other side. 2. Set up a (phone) camera to record video, as in the pic above. Slow motion video works best. 3. Sit on a chair and start the EUC. 4. Use both hands on the handle to rise the EUC from the ground. Find the balance so that you can keep the tire still. 5. Very slowly start to accelerate forward. When you feel the wobble at it's strongest, hold on to that speed for 5 seconds or so. 6. Stop and watch the video. You should see the wobble, usually both up-down and sideways. If the EUC turns right when at it's low position, attach the weights to the right side. If left, attach to the left. Now locate the spots for the weights. A kitchen scale rarely measures past 5 kg or so, so you need to distribute the weight of the wheel. Most rigid half a meter long things will do. I used a leftover piece of an in house floor board. Make sure none of the parts of the system touches anything soft, as this will mess the measurements. 1. Place the EUC on it's side on the very end of the board. Face the handle to the free end of the board. 2. Place the kitchen scale under the other end of the board. Place a small rigid box (or any suitable thing) between the scale and the board. 3. If the weight on the scale is out of range, move the EUC even further to the end of the board. 4. Turn the wheel by hand to locate the masking tape, and write down the number on the scale. 5. Very carefully rotate the wheel forward to the next motor bolt. This is usually 1/12th of a full cycle. Write down the number on the scale, and repeat until you are back at the masking tape. 6. Locate the position where the weight on the scale is at it's high point, and place the weight to the wheel. Repeat part 5 until the weight difference is under 5 grams or so. Now turn on and lift up the EUC again. If there is still a notable a side-to-side wobble, shoot another video. Locate the spot that is facing forward when the wheel turns to the side the weights are on. Move the closest weight to the other side, and check if the wobble went away. With the above process I was able to minimize the wobble to a tiny shake at full speed.
  4. My question is for riders who have tested the same model while fully charged with different sized batteries. Did the bigger battery increase acceleration, power, and/or weight?
  5. Hi folks, I was thinking that Inmotion v8 is much lighter (14kg) than Gotway ACM (18+kg). This is certainly a plus for Inmotion if you have to lift the wheel (climb stairs or lift it into a shopping cart). However I was also thinking weight can be a plus for Gotway too. When riding over bumps, potholes, and sidewalk edges, the higher weight might give extra momentum to pass over without losing much speed. Does anyone have an opinion about this ? Cheers
  6. I wonder, has anybody every tried to build a weight sensor into an EUC? That together with a weight-sensitive firmware should enable much more precise warnings related to all kinds of maneuvers and maybe even optimize the motor driver for best performance!? Or even just have the possibility to enter weight via the app and have the firmware work on that, maybe just in 3 classes light (<70kg), medium (70kg < W < 90kg), heavy (>90kg)? That should enable much better adjusted performance characteristics.
  7. Hi all, I'm seriously thinking about getting a ninebot one e+ or maybe s2 when I can get some proper reviews and specs for it. So my question that I hope some of you can help me out with is speed vs rider weight. E+ is supposed to go somewhere between 18 and 22 KM/H so what should I expect if I'm around 90kg /200 pounds? The second questions is how 20 km/h feels... I mean if I want to use it for commuting 20 km/h is needed but can I actually (after some training of cause) use that speed without getting a close to death experience each morning? It's really hard to tell when you're not able to try one out, as a matter of fact I have never even seen one live so I hope someone can help me out here Thanks /JB
  8. Hi everyone- New here. I'm a petite woman (<50 kg) interested in getting and learning to ride an EUC to make my commute a little quicker. I was wondering if folks could give me some advice on how difficult or easy it is for a smaller person to handle some of the bigger wheels (like Ninebot). If it helps, I am reasonably athletic and coordinated but not exceptionally so. I am attracted to the Fastwheel Eva Classic because my need for distance is not that great and it seems like it would be nice to have the machine be lighter (and a bit less expensive), but I see Fastwheel has gotten a lousy review on here. Any input or recommendations would be greatly appreciated. Oh, and I live in a rainy place--I of course would not go out on it in the pouring rain, but sometimes you get caught in the rain unexpectedly ....
  9. I recently got a 12 inch ips (130WH) that I really like for small trips or when I know I will have to carry my EUC inside somewhere. What are some other compact and lightweight eucs that would be good for traveling? Lets stick to whatever the airline limit is supposed to be for battery, which i believe to be 130WH.
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