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  1. J

    70% throttle deadband

    Thanks guys. I tried testing the values again, and they don’t seem to vary much at all. I’m a little worried of doing too much poking around with my rudimentary equipment and conditions – I don’t want to short-circuit something again. I replaced a hall sensor in the hub motor, not sure if...
  2. J

    70% throttle deadband

    Red and blue wires show 40v. White is about 3.55v, green at 4.2. Got the cover off. Everything looks good. Tried cajoling the hall/magnet etc in various combos - no difference of any kind. Doesn’t kick in until past half the magnet sweep. all other led screen functions, menues etc etc appear to...
  3. J

    70% throttle deadband

    I got a hunch it’s something to do with the hall sensors in the throttle. It looks like it’s been dropped a couple times, and the throttle mechanism got a good knock. I’m hoping I’m lucky and they just misaligned a bit. I want to rule out the controller, hub motor, etc. poorly or...
  4. J

    70% throttle deadband

    Hi guys Just got a junked 36v brushless scooter working by replacing a hall sensor in the hub motor. Appears to be working fine, although There’s like 70+ % dead band, and then the throttle kicks in with very little gradation. The effect is almost as bad as an on off switch, jolty . Any...
  5. J

    New Throttle / controller hookup question

    Haven’t ordered the pots yet, haha
  6. J

    36v hub motor troubleshooting help needed

    I dismantled the battery pack, and checked each cell individually via the BMS, and they all show almost a perfect 3.8 V. Guys, What can I do now? ? ? https://www.youtube.com/watch?v=OjBky3f29Jo&feature=youtu.be in addition, I have dismantled the hub motor. It’s just a simple matter of...
  7. J

    New Throttle / controller hookup question

    Thanks for posting the stills. I agree, the chinese standards leave a lot of room for mischief.
  8. J

    36v hub motor troubleshooting help needed

    Before I disassemble the hub motor, I want to confirm that the issue was in the hall sensor in the hub motor, not the corresponding part in the controller?
  9. J

    New Throttle / controller hookup question

    Here’s a video of the issue with a closeup of the controller disassembled: https://www.youtube.com/watch?v=5qK8YiH_tbc&feature=youtu.be Just to add, the old controller and mod is right at the beginning of this video: https://www.youtube.com/edit?o=U&ar=2&video_id=RV3zsVRA6YE I’m wondering...
  10. J

    New Throttle / controller hookup question

    Yes, the throttle seems ok. It now has deadband on both ends (top band wot). Motor seems totally fine. Got a bit warm after half an hour of continual use on the original set up. It’s never gotten a chance to get warm since installing the new throttle and controller, It’s all way too weak. It...
  11. J

    36v hub motor troubleshooting help needed

    Ok thanks kcuf. So the HAL sensors are in the hub motor. How can I test these? Like this?: https://www.youtube.com/watch?v=efYFOHnXh0E If the motor is definatly the problem, I can order a new one now, as they are cheap and take a while to get here. The controller is likely OK? Why will...
  12. J

    36v hub motor troubleshooting help needed

    Ok, so I ran my two 18v cordless power tool packs in series to get a total of 40.8V, And using an XT60 hooked it into the existing wiring of the controller. Powered up and gave exactly the same response on the hub motor. Is it safe to say the battery is no longer the issue? Also, I don’t see...
  13. J

    New Throttle / controller hookup question

    So what’s your take at this point? The throttle is clear? That only leaves the controller. I could order that alternate controller, and if that is also a bust I’ll just put the original system it came with back together. Given these 12v systems are much harder to find than the 24v+ ones, is...
  14. J

    36v hub motor troubleshooting help needed

    OK cheers guys. I’ll assume there’s no way to test the battery without having to pull it out and cut the wrappers off. One thing I did notice I didn’t like the look of was it has a deans connector that plugs into the recharge port. The shrink wrap does not completely cover the contacts, and...
  15. J

    36v hub motor troubleshooting help needed

    Hi guys I just bought a used EV that is not running, but otherwise looks in very good shape. I followed the troubleshooting guide here for electric bicycle hub motors: https://endless-sphere.com/forums/viewtopic.php?t=69441#p1047899 and it’s cleared the tests so far. I actually have a...
  16. J

    New Throttle / controller hookup question

    Aussierider, No rev feature on this one. It’s clearly labeled 12v, but I know 24v is a much more common option, and given chinese QC anything is possible. Tommycat, 3 ground wires soldered together, motor wires about 11.7v, about 9.8amps, battery 12.7, I’ll take throttle apart again to recheck...
  17. J

    New Throttle / controller hookup question

    Well I have some bad news. I got it all soldered up with the 12v->5v stepdown and put back together for a test run. While more power than before, it’s still much weaker than the original setup. It almost can’t move with me on it, where as it would zip off before. Any ideas?
  18. J

    New Throttle / controller hookup question

    Thanks again Tommycat. I’m currently scouring over my old electronics to see if I can find a suitable trim pot. I found a few, but not sure if they have the correct specifications for this application. I’ll order these as well...
  19. J

    Need help trouble shooting a new 36v scooter

    How about this? Useful or junk? New 24V/36V/48V/60V Electro Car E-bike Scooter Brushless Motor Controller Tester https://s.click.aliexpress.com/e/bk7ltCKG
  20. J

    New Throttle / controller hookup question

    Ok, I got it, I misread that as mV. The mA reads 5.9ma at rest on the throttle sensor signal green wire, whilst hooked up to standard controller power feeds. The red power line next to it reads 9.16ma. Since the previous test showed what appeared near full power at boosted 6+v input, would...
  21. J

    Need help trouble shooting a new 36v scooter

    Hi guys I just got a used scooter on an auction. No brand name etc, but looks identicle to this one, except no chair and a 8800mah battery. Battery is labeled “lithium”, not sure if it’s polymer or ion. https://item.rakuten.co.jp/gottsuprice/dendou-kick-scct/ Battery says 2014 manufacture...
  22. J

    New Throttle / controller hookup question

    Yes, that’s what I mean above. I be ripped it all apart, the tiny black sensor has 3 leads out of it. I put my voltmeter’s ground on black, and + on red, this reads 4.1v. Switch + to green wire leaf and it reads 0.865v. There is nowhere else to test! Should I upload a video to show what I mean?
  23. J

    New Throttle / controller hookup question

    Ok, I’m afraid I’m getting lost here. I took the throttle mechanism apart, and tried moving the magnet around to the best position and it was exactly the same as when assembled, hitting about 9 V motor output. I then put the sensor around an unrelated magnet I have on one of my tools, with...
  24. J

    New Throttle / controller hookup question

    The controller appears to be pumping out 4.73 V on the throttle powerline when I physically disconnect them from the throttle. I left the yellow LED voltage line and green signal line connected. I have an extension soldered to the throttle break wires, but it’s not connected. I connected...
  25. J

    New Throttle / controller hookup question

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