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  1. A

    Hall sensor error

    Today I changed the rear tire, and once it was reassembled, the motor doesn't spin anymore (hub 9c). The error displayed by the kt3 lcd is "hall sensor." While removing and reassembling the wheel, the cable that comes out of the motor accidentaly have been a bit pulled in the process, affecting...
  2. A

    Im looking for a shop inside the European Union Who sells crystalyte motor kits

    If possible with the motor already mounted on the wheel (Also, i Need an High voltage controller) Do you know where could i find them? Thanks Alex
  3. A

    Advice for a quality over 72v controller

    Which brands produce reliable controllers for voltages higher than 72v? For my current 72v e-bike im using a kt controller, but it cant handle more than 90v. Also, if i'd chiose ti go on with my current voltages, other good brands besides KT? Any advice? (Also where to buy them inside EU if...
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    Help with applying statorade to 9c

    Ok so, I watched this grin tech tutorial where they advice more or less to drill randomly the motor cover and put the statorade inside. Now, i never opened my motor so i don't know how it is inside but if it is like this one i found on a guide for applying the statorade: and i insert the...
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    Specs about nine continent

    Hi, i have a nine Rh205C 7x9 motor, i use it with a KT controller(and a 72v battery), i need to insert some parameter through the display(KT LCD3) in order to correctly configure it, but i don't know these parameters, that are: P1 = motor gear reduction ratio * number of rotor magnet pieces...
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    My awful experience with akkushop-24.de

    On november i bought a 72V20Ah battery on that german website for my ebike. My big mistake.. i should have trust less of the internet for such a big money amount. The battery worked for a month. Then it died, i asked for warranty, they didn't want to fix it because it can't be used on a back...
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    How can i check if the battery works?

    My ebike stopped to work. I thought it was the controller, i bought a new one, but it still doesn't start at all. Between the red and black of the battery i have 75V, but i try to power a lamp or the iron, or the phone charger, nothing works.. What test could i do to understand for sure if the...
  8. A

    new kt controller doesn't work

    Hi, my 72V 50A KT controller has arrived. Today i installed it on the bike but it doesn't work. The display doesn't even switch on. The voltage between the two poles of the controller's wires is strange, it changes according to where i try to measure it/ even with the time. I attach some video...
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    The bike is not working anymore

    I have just bought a new controller, a new battery, and also the motor is almost new. The controller is a low quality one. Now, for about 50km everything worked, some days ago i took the bike for having a ride, when I accelerated, for a microsecond it started to go, then nothing, dead. now...
  10. A

    where can i buy a quality 72v controller?

    The only brand i know that should be ok is kelly, but they want like 300€ for a controller. what other brands produce controller for high voltages? also a shop url would be appreciated, thanks.
  11. A

    Problem with new controller and accelerator

    I bought a new controller from china. not even so cheap. now the problem is, that as soon as i plug in my accelerator, the bike starts to accelerate, even if i'm not touching the accelerator. I checked the volts in the controller connector, and seems right, between red and black there are +5v...
  12. A

    where to buy statorade in eu

    I was looking for a place inside eu that sells statorade. the chipest i found is https://nexun.pl/statorade-10ml-motor-cooling-system-ferrofluid , where it is even cheaper that from the grin website, so i was wondering if it's the original one. what do you think? also, it's not sold with the...
  13. A

    Nasa ingenuity battery pack

    I found this article pretty interesting. As you can read, when it's about small battery cells the nasa has the same limits we all have! :D https://www.linkedin.com/pulse/mars-helicopter-ingenuity-deep-dive-its-6-pack-damien-frost
  14. A

    How to secure the battery to the bike

    I'm going to buy a big battery (around 1500wh), and then i have the problem of how to safely attach it to the bike. I have bought a huge triangle bag, and this could work but, i want to change bike and buy a full ammortized One, and in this case the frame space triangle would be too small for...
  15. A

    Anyone knows SINC cells?

    Any ifnrimation about this battery cells and their quality?
  16. A

    Controller without display and pushbutton for assistance level

    I was wondering, if i'd buy a controller like this https://it.aliexpress.com/item/1005002619301942.html that for what i know has no brand or at least not a brand that makes also display. How could i connect it to a display or at least use the buttons the allow to choose a level of assistance...
  17. A

    Are torque arms on a common MTB frame enough for 3kw?

    I'm planning to assemble an e-bike around 2.5/3kw. But i'm a bit worried about the frame/dropout resistance. The MTB i have is just a Decathlon 280€ bicycle. What do you think? Ok, i have disk brakes and there are tyres as the schwalbe supermoto, but the frame remains an unknown
  18. A

    How to match display and controller

    I'm looking for a 72v controller on AliExpress. For this voltage there arent many options of complete kits, so easily i will have to buy first the controller and then buy a display, i cant find them already matched at the price i want to pay. Point now is, how do i know that a certain display...
  19. A

    How to apply statorade on a 9c motor

    I watched the video of the producer where he drills a crystalite but..i didn't get exactly how i suppose to choose the place where to drill, with my motor. I could also open the motor if needed, but i'd need some help in order to understand where do i have to apply this ferrofluid to my 9c hub...
  20. A

    9c kit and uphills

    Hi, i'm probably going to buy a 7x9 nine continent kit, and power it with a 72v battery and a commander around 30A of continuos discharge. Anyone that have experience with this kit can tell me his opinion about if i risk to melt down the motor when i will use it on strong uphills like 15% or 20%...
  21. A

    Choose a kit for create my new ebike

    Hi there, right now i'm riding a rockrider mtb with a bafang bbs02 but i need more power so.. i'm asking you for an advice. I was thinking to make an ebike with at least 2-3kw of power, if with a mid drive motor better, but if there aren't of this power i'll go with an hub. Important thing..the...
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