Re: BAD Vibrationat 30+?
something is broke or too tight! inspect bicycle and motor real good then check frame! it has to be one of those! I have built and repaired about a dozen of these and never had a bad motor to blame for vibrations. then again maybe I've just been lucky! most of my motors have come from BGF. the most common motor stud to break is on the left rear of motor, thats where most of the tension is at especially if you have the chain tight or the rear sprocket is not true center. or a front motor mount if you have drilled through your frame! I only speak of experience to know what I say are true!