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Putter balance relates to feel, when in the address position the player swings the club back and forth as if to take a stroke. A putter will feel balanced if the weight is symmetrically positioned toward the toe and the heel of the shaft axis.
If, however, the c.g. is at some distance from the axis of the shaft and when the shaft axis is in line with the heel of the putter, when the putter is waved back and forth it will tend to over rotate when there is a change direction. This can contribute to a very slight awkward sensation which we cannot quantify but call it “feel”.
Swing weight balancing – often talked about when referring to putter balancing– is something we must avoid. The only time we need to be talking about swing weight -- and then it is questionable because it is so often abused – is for clubs other than putters. Swing weight is a trial and error derivative of System MOI (the resistance to angular acceleration when rotated about a defined axis) and is important only when a full swing is being used.
The most important weight in the putter is the head weight. This is the business end of the putter and we need to learn how best to swing it consistently.
After many years of trial and error, a putter head weight of 350 grams has been found to work best. Over time heavy and light putter weights have been tried, but we always migrate back to what works most efficiently.
Some people have suggested the player should change the weight of his putter for different green speeds. This is certainly not a good idea. Changing the putter’s weight will change the overall feel, and the player will have to develop a new rhythm and feel for this change in weight. There are enough variables to worry about when putting and introducing another one is not a smart thing to do.
