RE: Balancing a crank/con-rod/ piston???
NO, that why you can't balance a single.
Basic is 100%l of the big end of the rod and 40-60% of the pistion and small end of the rod.
The 40-60% allows you to chosen where do you want the engine to vibrate, at full throttle or 1/2 throttle, cause its going to vibrate some where in the rpm band.
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