of so many under 40cc gas engines which is the smoothest of em all?
thx very much

There is no "smoothest" engine..What's smooth to me may not be smooth to you..Smoothest single I ever had was a Zenoah BC430 converted brushcutter, 42cc....Same size crank as the G62, so it was heavy for a 42...The extra weight helped to absorb vibration.....

My opinion would be the Taurus motors.