Maybe with the chain off the crank got turned enough and the cadence sensor engage the pedal assist and started the motor.
That could be. It happened very quickly and it is true the crank was freely moving without the chain attached.
Maybe with the chain off the crank got turned enough and the cadence sensor engage the pedal assist and started the motor.
That could be. It happened very quickly and it is true the crank was freely moving without the chain attached.