Firstly, thank you for sending the hub motor with rear light so promptly – it arrived within a couple of days of your email and is installed and works perfectly.

Unfortunately there are some problems:

1) There were no instructions that I could find for connection of the electric bike battery level wire – the green one – so I am unable to tell what the battery levels are.

2) The light switch (brown and yellow leads) did not work on either the thumb control or the twist control (I use the thumb throttle control on the bicycle). I wired the lights directly to the electric bike battery leads with a switch and this works fine.

THE BIG PROBLEM.

I received electric conversion kit and installed the hub motor,motor controller,electric bike battery and the other parts on my bicycle about 10 days ago. I ride about 30km to work and back again in the evening and electric conversion kit has been performing very well. The route is quite hilly in places and the hub motor struggles a bit up the hills so I always apply some pedal assist in this situation. A couple of times towards the end of last week and again this morning when I have been applying the brakes on a steep downhill, there have been about 4 sounds from the horn and the motor has cut out. The first couple of times I switched off the power then back on again and the motor started again. This evening it occurred again and no amount of switching the power on and off would restore the motor to action. Instead each time, the horn sounded about 4 times, then stopped.

I started to ride with everything turned off but I noticed that the electric bike motor wheel felt rough and resistant to rotating. The electric bike motor wheel does not turn freely at all now. It feels as though the motor has seized.

I was relying on the bicycle with electric bike motor to get me to work so it is quite a problem.

I am happy to ship the hub motor back to you but not by air as it is too expensive. I was reading on the leafmotor’s forum that the HBL hub motor is better for hills. I would have bought this but it is not yet available for 20 inch wheels. If my hub motor is in fact unrepairable, I would like to have its replacement exchanged with the hbl hub motor for the 20 inch wheel – I am happy to pay the difference between the cost of a replacement for my hub motor and the hbl hub motor when it is available.

From above case,we are sure the bldc motor controller was broken that because of over-current brought high temperature and broke the MOSFET.
So your hub motor electric conversion kit can’t work.

Hub motor,electric bike motor,electric conversion kit supplier: Leaf Motor Technology Co.,Ltd.