I purchased a demo st1x with 150 miles from crazy Lenny. I have 250 miles on the bike and the motor appears to be making a slight grinding noise under load. The power is fine but what the hell is that noise? Shouldn’t these motors be silent? Wondering if it will be a problem?
I had a motor problem when I first got my ST2 at the beginning of last summer. In the end it turned out to be a bad motor cable. They overnighted me a new one and it’s been flawless since.
Here’s the thread I started about my problem and it’s solution. Hopefully your gets resolved quickly and easily!