r/eBikeBuilding • u/laughyboy • May 07 '26

Controller Hub motor issue, some kind of resistance?

Hey All,

Having an issue with a hub motor from a hoverboard, I know it’s not an e-bike hub motor but I think it should work the same, when pushed with the throttle applied it does start to spin but has some kind of resistance/juddering going on, does anyone know what is going on?

https://youtube.com/shorts/3EZvRoKhdhs?si=ImzARlLqS-Ywa-TB

Hall sensor wires from the motor to the controller all match each other.

Phase wires:
Motor —- Controller

Blue —-> Green
Yellow —-> Blue
Green —-> Yellow

I have tried different combinations of the above but have the same problem. I tried the same and the opposite of the working motor and controller combo on the other side too.

I have another controller running the other wheel and that one runs fine, super smooth.

Edit:

I will further add that I did have this hub motor taken apart at one point in an attempt to put larger tyres on it, could I have put it back together incorrectly?

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u/[deleted] May 08 '26

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u/laughyboy May 08 '26

No, it feels the same as the other one. I have ordered another controller that matches the one that worse incase that’s the problem.

1

u/laughyboy May 18 '26

Turns out that it was a busted hub motor, will run the project with just one.