Re: what did you do to your motor bike today? LaLongueCarabine That is good speed on a China H.T. motor. Some of those motors have balanced cranks to them better than others but they all pretty much vibrate is the norm. My italian is incredibly smooth in comparison . Shame they stopped making them. I did have one H.T. motor that was smooth never came across a smooth one like that one again. Got that one going fast too!!