Nielsquake
100 µW
- Joined
- Jun 14, 2022
- Messages
- 8
Hello everyone on the forum, this is my first post here since I am having some issues with my hub motor (the most generic 1kw Chinese one). I got it for 250 euros second hand and it came with all the cables still connected from a working bike so I just attached it to my bike as it was configured.
I got it to run easily enough by connecting a battery pack to it and it was going pretty fast and working well. I switched to a better battery and did some test laps around my area and everything seemed fine until suddenly the motor abruptly stopped the bike (I was going slow so no injuries or anything) and I figured a cable came loose or something and got caught between the spokes. However, upon further investigation I noticed the wheel was spinning fine but now it is in REVERSE!
Now before telling me I hooked up the hall sensor wires wrong or those motor driver cables should be changed you have to realize this change happened during me driving it with no alterations to the wiring. I manually peddled back to my house to inspect and do some research on the issue. I learned that some bike controllers have a build in feature to reverse but this didn't seem to be included on my driver. I also heard some drivers come with a learning feature that can automatically determine the correct hall sensor configuration but this feature also wasn't on my driver!
I just reversed the polarity 2 of 3 of the main motor driver wires and now although it did go forward it now has other issues.
When I throttle it makes a weird noise like a grinding type noise and when I accelerate fast enough this goes away and gets replaced by a kind of rubbing / squeaking noise. This doesn't happen when I pedal manually. Also when I use the throttle it doesn't immediately go faster (doesn't output any wattage) for around a second and then suddenly goes forward. The wattage it gets to after this is also lower then what it was before (700w vs 1040w according to the display)
Funny thing is I found a reddit post about someone with exactly the same issue (new battery, bike runs fine, bike halts, bike is now in reverse mode, change motor driver wires, works but weird sound. His experience was 100% the same as mine and he managed to fix it by just getting a new driver he already had as a spare.
Now I can drop 60 euros on a new driver and hope for the best but I was wondering if anyone here has any idea why this could even happen. If it was an issue with some mechanical part I imagine it must also cause issues while driving manually without the motor being powered yet there is 0 difference from before.
Any help would be much appreciated!
I really made sure none of these features like reverse and the self learning stuff were on here so I think something wonky must have happened internally with the driver module.
The bike still works fine and it goes relatively fast but I'm afraid I might damage the motor itself if I keep using it.
I got it to run easily enough by connecting a battery pack to it and it was going pretty fast and working well. I switched to a better battery and did some test laps around my area and everything seemed fine until suddenly the motor abruptly stopped the bike (I was going slow so no injuries or anything) and I figured a cable came loose or something and got caught between the spokes. However, upon further investigation I noticed the wheel was spinning fine but now it is in REVERSE!
Now before telling me I hooked up the hall sensor wires wrong or those motor driver cables should be changed you have to realize this change happened during me driving it with no alterations to the wiring. I manually peddled back to my house to inspect and do some research on the issue. I learned that some bike controllers have a build in feature to reverse but this didn't seem to be included on my driver. I also heard some drivers come with a learning feature that can automatically determine the correct hall sensor configuration but this feature also wasn't on my driver!
I just reversed the polarity 2 of 3 of the main motor driver wires and now although it did go forward it now has other issues.
When I throttle it makes a weird noise like a grinding type noise and when I accelerate fast enough this goes away and gets replaced by a kind of rubbing / squeaking noise. This doesn't happen when I pedal manually. Also when I use the throttle it doesn't immediately go faster (doesn't output any wattage) for around a second and then suddenly goes forward. The wattage it gets to after this is also lower then what it was before (700w vs 1040w according to the display)
Funny thing is I found a reddit post about someone with exactly the same issue (new battery, bike runs fine, bike halts, bike is now in reverse mode, change motor driver wires, works but weird sound. His experience was 100% the same as mine and he managed to fix it by just getting a new driver he already had as a spare.
Now I can drop 60 euros on a new driver and hope for the best but I was wondering if anyone here has any idea why this could even happen. If it was an issue with some mechanical part I imagine it must also cause issues while driving manually without the motor being powered yet there is 0 difference from before.
Any help would be much appreciated!
I really made sure none of these features like reverse and the self learning stuff were on here so I think something wonky must have happened internally with the driver module.
The bike still works fine and it goes relatively fast but I'm afraid I might damage the motor itself if I keep using it.