Hub motor not working

A place to discuss the repair, design, and customization of the bicycle itself, not the powertrain ( battery, controller, motor, etc ).
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Tommy_p   1 µW

1 µW
Posts: 2
Joined: Apr 07 2021 10:45am

Hub motor not working

Post by Tommy_p » Apr 07 2021 11:57am

After few weeks of testing my 1500w 52v ebike I got hungry for more power so I made a shunt mod and unfortunately ended up with dead motor. My first guess was the controller as I've heard a noise similar to capacitor explosion after 15km of riding in a city.
Well, it works but only if I spin it a bit and then makes a lot of noise(not sure if it's motor or controller) especially when I'm trying to ride a bit faster than the speed of walking. Beside that the wheel gives a lot of resistance while trying to spin.
Here's a picture of opened motor.

Image


Any chance of reviving?


PS. Sorry for my English.

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E-HP   10 MW

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Joined: Nov 01 2018 9:20pm

Re: Hub motor not working

Post by E-HP » Apr 07 2021 1:18pm

Those windings near the bottom look fried.

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markz   100 GW

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Joined: Jan 09 2014 11:38pm
Location: Alberta Canada

Re: Hub motor not working

Post by markz » Apr 07 2021 2:54pm

resistance when hub is unpowered means the phase wires are touching

and you heated that motor up and dagamed it

time for you to buy a new motor

Tommy_p   1 µW

1 µW
Posts: 2
Joined: Apr 07 2021 10:45am

Re: Hub motor not working

Post by Tommy_p » Apr 08 2021 3:25am

After little inspection it turns out that two phases are shorted. Is it worth of my time to search for it and try to remove or is it most definitely so dense that the only way is to rewind the motor and if so is it very difficult to do that? Anyone tried it before? Maybe there are some guides on the forum?

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