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  1. L

    Max erpm and field wakening

    My geared hub with very fast winding causes problems at higher speeds, so it starts to stutter, I'm sure it's due to the high erpm, which controller is best suited for this? In any case, my 72v kt controller is causing these problems with the motor
  2. L

    Controller Stutter Issue - Help Needed!

    I have exactly the same problem with my geared hub, without load it runs well but under load it starts to stutter at higher speeds, it's a KT controller, could it have something to do with the erpm? Since it is a very fast winding, which controller could be suitable for it? Thanks
  3. L

    Thoughts on throttle taming?..

    Does it just have something to do with the controller or are there also differences in the throttle used
  4. L

    geared Motor problem

    Thank you very much
  5. L

    geared Motor problem

    what about the sabvoton Controller ? I have now a Kt Controller Square Wave 72v but like i said cant handle the high rpm
  6. L

    geared Motor problem

    Hello everyone, I have a problem with my 1000 watt geared hub motor with 20“ , it is a custom made and has over 750rpm at 72v, it stutters a lot at higher speeds, after trying everything, I found out that it is a controller problem Who can't handle the high rpm (a geared hub rotates 5 times...
  7. L

    geared Motor problem

    I found out what the problem is, my xf19r is a custom made and has over 750 rpm at 72v and the gears inside makes it spin 5x faster, so the problem is that the controller has problems with the too high rpm, does anyone know a controller that is good for high rpm?
  8. L

    Again...3T, 4T, 5T, 6T difference

    what do you think about the 3.5t in 16" ? i mostly drive on roads but the region has a lot of hills, do you think 3.5t in combination with 16 inch has good torque ? i was thinking about the 4t with 16" but i think with 72v without flux, the top speed will be a bit too low for me, i'm thinking...
  9. L

    geared Motor problem

    it's not the hall phase combination, by the way the motor runs normally with 48v if it were a wrong combination it would do the same thing there, but this motor causes problems with 72v . But even at 48V there is a power cut if I fully depress the throttle while standing . However, with a 48V...
  10. L

    geared Motor problem

    it doesn't work in any single combination except for the one in which the colors also match, i've tried all combinations, only one runs forward
  11. L

    qs205 16“

    So I asked many dealers who sell these motors, but I get different answers, it seems to me that they have no idea what they sell, qs unfortunately only gave me the rpm as an answer but not the answer to my question, that's why I'm asking if anyone has experience with this combination
  12. L

    geared Motor problem

    Yes, unload without problems up to a top speed of 73, but as soon as I drive and accelerate to 43/44, the engine starts to jerk strongly. When I asked in China, she mentioned that it might be due to the engine rpm being too high
  13. L

    geared Motor problem

    and the problem was always at the same speed from 44 kmh
  14. L

    geared Motor problem

    so i tried all combination and no one's worked , the only one that works was the normal combination(but with the problems on higher speed that i told) , so this not because the phase hall combination
  15. L

    geared Motor problem

    I heard in some forums that the kt controller does not get along well with high rpm, and my xf19 is a production with approx. 550rpm at 48v so could it be that? but it runs with my dd hub with a similar rpm without any problems. Incidentally, I had exchanged the hall sensors without any change
  16. L

    geared Motor problem

    https://de.aliexpress.com/item/1005001844252001.html
  17. L

    qs205 16“

    hello i want to order a qs205 , but i also want small wheels like 16" moto or 20x4" , i asked many times about experience with the qs205 and smaller rims but apparently there is not much they use this combination , so is here someone with expererience ? i want about 75-85 kph with 72v and no...
  18. L

    geared Motor problem

    Thank you very much, my controller is a kt controller 72v Square and I think the motor has to much rpm for this controller is this possible ?
  19. L

    geared Motor problem

  20. L

    mxus xf15 gear hub motor teardown

    You have still the same Problem ?
  21. L

    geared Motor problem

    hello guys, i have a problem with my newly arrived mxus xf19 geared motor, the motor runs unloaded without any problems but when i drive, it starts to jerk a lot at high speeds, as if it were misfiring, and at full throttle it cuts off briefly (only the performance, display stays on) It's...
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