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  1. Dui ni shuo de dui

    E-Scooter meets the Fermi Paradox

    If the LED isn't on it means that your controller isn't receiving power. So it's probably your ignition wire that doesn't work, for some reason. I suggest you simply temporarily connect a wire directly from your battery positive to the controller ignition signal. The LED should then switch on...
  2. Dui ni shuo de dui

    E-Scooter meets the Fermi Paradox

    Glad you managed to connect, that's great news! It's hard to answer without seeing all the configuration you've done in all the tabs, could you share some screenshots? Have you done the motor calibration yet?
  3. Dui ni shuo de dui

    E-Scooter meets the Fermi Paradox

    Normally you go to "devices and printers" in the setting panels of windows, then you should be able to see which port com has been assigned. Are you sure you plugged the cable the right way? I never had an issue with this step, it always worked first try for me. Never used the bluetooth on...
  4. Dui ni shuo de dui

    Electric Kart QS138 96V

    Doing the exact same thing is on my to do list, hopefully someday! I will follow this thread with great interest. I suggest you get a more powerful Fardriver if you still can. This one won't be too weak, but it won't be as crazy as it could be
  5. Dui ni shuo de dui

    Street legal Cafe Racer build.

    You don't need that much power if you have a good insulation and aren't in a hurry. I've built a small electric furnace that gets up to 850 Degree celsius in 25 minutes using only 1600W of power. I did a few aluminum castings with it and it worked great. Of course the volume is a lot smaller...
  6. Dui ni shuo de dui

    First Electric Motorcycle Conversion Advice (1974 Honda CB360)

    Very nice, it's looking great. Also it seems like its pretty quick already Anything planned for the brakes? They might need a bit of upgrade now :p
  7. Dui ni shuo de dui

    8000w Novice Build! Advice Needed!

    Ah yeah, I meant open of course. :p
  8. Dui ni shuo de dui

    2008 CRF250R - QS138v3 70H - ANT - Sanyo UR18650-RX 20s20p - Votol EM260

    I strongly recommend you to get the quick change tool post. This is what transformed my mini lathe from a barely usable tool to an actually, really useful one. It is a little bit expensive, but it makes a huge difference. Take a new tool, drop it in there, tighten the lever and you're good to...
  9. Dui ni shuo de dui

    8000w Novice Build! Advice Needed!

    This contradicts my experience, at least with the ANT BMS I actually never had one fail shorted, I had one who couldn't activate its mosfets anymore, but they remained closed (Edit: Opened, not closed). And the thing is able to detect that something is wrong with the mosfets, it will then beep...
  10. Dui ni shuo de dui

    8000w Novice Build! Advice Needed!

    The Sabvotons controllers have all these protections built in. I've done lots of rear wheel lock using the brakes on these controllers (no brake wire connected to the controller as well) and never had this issue. No idea what happened there, its likely that the controller malfunctionned but it...
  11. Dui ni shuo de dui

    Building manned drone electronics help please

    Well, of course, this is how Youtube works and everyone knows it. Why would it be a bad example? It should be taken as cheap and easy proofs of concept, doable by a single guy for an affordable budget in a few weeks/months in order to learn the basics and gain experience. Anyone who built...
  12. Dui ni shuo de dui

    "seized" stator

    Great job mate, I really hope for you that it is gonna last. Don't get your hopes too high though, A friend of mine did something similar but eventually the motor died a couple of years later because the rust came back. I suggest you check at least once a year if possible, and avoid as much as...
  13. Dui ni shuo de dui

    "seized" stator

    Yes, indeed, long story behing that weird username, it was a crazy day haha. :p Yeah better not to wait for too long. Sorry I can't recommend a specific model as I'm not familiar with bicycle motors, but I suppose QS motor would be great. I'm using their motors for scooters and motorcycles and...
  14. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    Maybe that's a dumb question but could'nt you just buy paint?
  15. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    In this case the "extra complexity" ends up in a more reliable throttle. The reason is that you can hide the electonic part away from water/rain. It makes a big difference safety wise and makes it way more reliable. I had a regular throttle going full speed once during a storm because rain got...
  16. Dui ni shuo de dui

    "seized" stator

    I'm amazed that this motor is still working given how bad the rust situation was. As amberwolf rightly said, I suggest you make 100% sure there is no remaining rust whasoever on it and in it before painting. The problem is that if rusts gets between the lamination, it will increase their size...
  17. Dui ni shuo de dui

    Oil cooling a motor with transformer oil/dielectric fluid - the next frontier?

    Yes, I haven't said anything about balls ;) Yeah that was kind of the point I was making. If you've already lost a few then the rest is likely to follow.
  18. Dui ni shuo de dui

    Oil cooling a motor with transformer oil/dielectric fluid - the next frontier?

    Those bearings don't inspire a lot of confidence... Looks like they could just drop out at any moment
  19. Dui ni shuo de dui

    Fardriver shut down when accelerating

    This is the opposite issue of the one I described just above: this time it is the maximum voltage limit of your controller. When you're braking, the motor is used as an alternator to recharge your battery. So this creates a voltage spike. Let's use the same figures I used in the post above: at...
  20. Dui ni shuo de dui

    Fardriver shut down when accelerating

    Ok so the reason why your bike shuts off during acceleration is likely because your batteries are a bit too weak. When you accelerate the motor needs a lot of current from the battery. But due to the battery's internal resistance the total voltage will go down suddenly. Let's just take some...
  21. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    Heat is current dependant. So at equal power a higher voltage system will typically heat less.
  22. Dui ni shuo de dui

    2008 EVT Bravo 4000e - Dead!

    Sorry I'm not 100% sure to understand your question as this was quite difficult to read for me. Do you mean you currently have a machine that has two motors and only one controller running both of them and the controller is fried? If yes, then you can replace it with any dual motor controller...
  23. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    Yes, don't bother with this it's meaningless. The real power is determined by battery voltage x battery current. nothing else matters. Higher voltage is usually always better. The stress on the motor isn't too much correlated as far as I know because the controller kinda acts like a buck...
  24. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    They use their own app, it's not VESC. It's not incredibly great but it's more than enough to do whatever you need. It's not like you'll tweak the motor configuration everyday anyway, once it's properly set up people usually don't keep making changes, even though they think they will when they...
  25. Dui ni shuo de dui

    Better than the Stark Varg? 76v 90Ah 35kw Dirtbike Build

    Not that I'm aware of. Many people share wild claims about these controllers but so far I've seen nothing very impressive coming from them. I'm not saying they are bad controllers, but there is very little actual unbiaised feedback so far. If you want something that is proven to work then you...
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