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Posts posted by Mono

  1. As suggested by another forum member, I adjust the pressure to get the most neutral turning behavior of the wheel. For me it's somewhere between 35 and 40PSI, I believe closer to 35 than to 40. This fits quite precisely into the above linked appropriate pressures graph from ewheels.

  2. 2 hours ago, mrelwood said:

    You don't lift a running EUC unless it has the handle switch, so no you won't. You'll turn it off first.

    Have unintentionally lifted a powered on EUC many times and many people that I have let try have done it despite my warnings (some literally 2 seconds after I told them not to). It's quite unintuitive to grasp that one should not lift it even for a short moment. We are all humans, while you must be super-human, clearly.

  3. 3 hours ago, kinggus said:

    the 16s doesn't cut the power when lifted? so if i manage to somehow get my leg under while caring I'll get "burnt"?

    Yes, as with most EUCs.

    It will turn off when it has reached its maximal (spinningspeed and it cannot be recommended (at all) to put it on the floor (or foot) before that has happened. If you are talented you may be able to slow it down by doing controlled forth-and-back swivels (I can only do it with one of my wheels and not quite reliably).

    • Like 1

  4. On 5/31/2018 at 7:10 PM, Moshtrat said:

    A crash at 27.x km/h would not be so drastically different than a crash at 29.x km/h by the way.

    15% more impact on your bones to crack in exchange to 7% of increased speed or saved time. At this speed, 15% is IMHO already pretty significant.

  5. What's the point to squeeze out 2km/h when you expect to fully ride into the tiltback anyway?

    The concern I have is neither motor problems nor overheat but riding closer to the torque limits and at higher speeds, which increases the likelihood and the severity of a crash.

    • Upvote 2


    On 5/25/2018 at 8:14 PM, Andee said:

    As @who_the has mentioned, I do not feel that I am sacrificing safety. The tilt back still happens, just that it is level now and I can ride the upper bound in more comfort, thus, more control. The tilt back, without compensation, is too much for my ankles to handle.

    BTW, I am not suggesting to remove the tiltback, just how to manage it a bit better.

    The safety feature of tilt-back is that it strongly incentivizes the rider to slow down, because it is hard (up to impossible, depending on the angle) to keep the feet in the backwards tilt position which is necessary to maintain the speed under tilt-back (leveling the pedals will bring the wheel in front of the rider and thus inevitably initiate a slowdown). If you have changed the base angle such that the tilt-back angle is horizontal you have turned off the mechanism by which tilt-back makes riding the wheel safer. For your safety remains that the change in pedal tilt signals that the wheel has reached the limit speed. The strong incentive to slow down has disappeared.

    If you ride your wheel at tilt-back speed on level "with more control" you ride it in a constant over-speed situation. I am not quite convinced that this is what I could call uncompromised safety.

    • Like 2

  7. 9 hours ago, alexey14 said:

    Guys, I fallen hard  yesterday, 

    My problame is something like this:


    I will fall over left or right, this is my biggest problame now.

    To prevent falling left or right like in this clip, you have to turn/twist the wheel in the direction where you are falling. Just tilting the wheel to the side as you did is not enough. It should be very helpful to practice these swivel movements as described here


    • Like 2

  8. On 5/20/2018 at 2:12 AM, Scatcat said:

    What he didn't speak about, and what I find a bit suspect in this reasoning, is that lower voltage comes with a serious disadvantage. You have to move a lot more current to get the same effect, which means you absolutely need to lessen the resistance at all stages in the circuit.

    "a lot" means twice the current on a 40V system compared to an 80V system. Sure, you need to lessen resistance where it matters, but that isn't really rocket science. I am absolutely positive that Justin has heard about this problem and the solutions, even if he hadn't been talking about it 😀, though I actually hear him talking about it in this very vid at around 7:20.

  9. 46 minutes ago, Chriull said:

    Power dissipation goes with the square of the current.

    I guess that is true all else being equal, which is not a very reasonable assumption to make for two systems designed to operate under two different base voltages. The "problem" remains that the e-motor engineer Justin Lemire-Elmore owning Grin Technologies tells us very elaborately that voltage has essentially nothing to do with e-motor performance. Is he wrong? 


  10. 21 hours ago, Hunka Hunka Burning Love said:

    I have a few burning questions - why did Ninebot stick with the lower voltage specification when others have been at 67.2 and 84V and higher for the longest time?

    My hunch would be that this is because higher voltages do not give any decisive technical advantage, apart from the publicity buzz. The additional wire weight is probably rather insignificant overall.

    • Like 1

  11. On 5/12/2018 at 11:08 PM, Jerome said:

    I have yet to see a posting, however, mentioning the white elephant in the room. Do people really believe that riders will continued to be allowed to ride >=30 mph vehicles without registration/insurance/type acceptance standards, etc. very far into the near future?

    Most people don't believe that. Surprising even "only" 30% of the below poll responders are of the (totally crazy ;-) opinion that EUCs which can be driven without license or insurance should have no legal speed limit. Some related topics:




  12. 22 minutes ago, TomOnWheels said:

    I did... I've ased e-roue if they can get a spear battery as they are selling uniwheel, they told me they gonna call them but no news too... 😮

    BTW, what was the outcome of your test ride?

    I am seriously considering to check out the Uniwheel, but if e-roue can't organize a spare battery, I most likely will not buy it. To have at least one extra battery seems to be a must for this wheel.

    • Upvote 1

  13. On 5/14/2018 at 3:51 PM, ir_fuel said:

    EUC's should be allowed where bicycles are allowed. Simple as that.

    This would ban EUCs from being legally operated on sidewalks in many countries. This would not be my favorite legislation spot. There is a good case to be made that EUCs mix better with pedestrians than bicycles do already due to the space requirements. I'd personally prefer to be banned from streets over being banned from sidewalks. Banning them from sidewalks would also significantly impede popularization, IMHO.

    • Like 2
    • Upvote 1

  14. On 5/11/2018 at 7:04 PM, TomOnWheels said:

    Thanks for information ! Uniwheel is available here in Paris, but I was trying to see if there is a way  to get an extra battery and also where they are with Android app dev...

    Why don't you ask your Paris dealer?

    • Like 1

  15. On 4/22/2018 at 8:08 PM, Jess said:

    Ach und noch was - im Juni steht Paris auf dem Plan, da wollt ich das Wheel mitnehmen. Hat jmnd Erfahrung in Paris ? Habe gehört, daß die Franzosen da etwas lockerer sind ..??

    Yeps, irgendwie inoffiziell legal. Nur in manchen Parks und auf U- oder S-Bahnsteigen wurde ich schon unmissverständlich gebeten abzusteigen.

  16. How much is safety worth to you?

    At least €2000 per year to me.

    How do I compute this? About 1h of safety training per week makes, putting a low hourly rate of €20, 52*€20 ≈ €1000 per year. Then, I lose about 8 min per day because my average speed is 20km/h instead of 25km/h, which is another 50 hours per year, so another €1000.

    I think it's worthwhile and has a higher return on investment then putting the money in material, but mileages vary.

  17. 45 minutes ago, Demargon said:

    Charged eucs have the same power to climb as they have to break. The engine push with the same power in boot directions.

    They should have more power to brake than to accelerate, because the back EMV is a tension that works against the direction of spinning.

    • Upvote 2

  18. 15 hours ago, HazyJ said:

    Thanks for saving my teeth.

    Somewhat the same goes for accelerating: the safer way is bending the knees while pushing the thighs forward and keeping everything from the hip upwards in the very same upright position.