Been using the electric bike for some time, it's been brilliant. However I was going down a relatively steep hill and had a fair bit of speed on when all of a sudden the rear axle locked up and span which of course completely ******ed the motor cable. Does anyone know why it would jam like this, once I'd stopped it was completely free so it wasn't a mechanical fault. Also is it worth repairing and if so does anyone have any 8 core hall cable about?