Hi all,
Been out today on my Yosepower 350w rear hub conversion MTB, not been using it much over the winter, but today was the 3rd time in the past week. All been fine until the end of my ride today.
Noticed a loud grinding noise coming from the hub motor, but only when going slowly uphill and at the end of the ride and with the hub under load. Once the speed picks up the noise drops off. Can't hear it when the bike back home when just spinning the motor no load on the hub. The sound doesn't appear when the motor is turned off when riding.
Bought as a kit in Aug 2018 so not sure if still covered by any warranty, will get in touch with yosepower, but I suspect that it's not as the warranty on the same kit now mentions just 18mths on the motor
Be grateful of any advice, thanks all