The Sweet Spot And The Perfect Baseball Bat

As a kid growing up in Indiana, I always strove to find the perfect fit in bats for me, one that had a sweet spot as big as Indianapolis. I never knew the exact location of that spot other than it was somewhere near the bat barrel's thickness, but I knew it when I hit the pitched ball there.

In experiments conducted by Dr. Daniel A. Russell of Kettering University, he examined the sweet spot in terms of two separate criteria:

* the location where the measured performance of the bat is maximized, and

* the location where the hand sensation, or sting, is minimized.

He had numerous opinions on where this location was on a bat. A list follows:

* the location producing least vibrational sensation, or    sting, in the batter's hands

* the location which produces maximum batted ball speed

* the location where maximum energy is transferred to the ball

* the location where coefficient of restitution is maximum

* the center of percussion

* the node of the fundamental vibrational mode

* the region between nodes of the first two vibrational modes

* the region between center of percussion and node of first vibrational mode

Dr. Russell explained that most bats have "sweet spots" in different locations, thereby leading to his conclusion that the sweet spot is more a region than a spot, generally located  approximately 5-7 inches from the end of the barrel where the batted-ball speed  is the highest and the sensation in the hands is minimized.

He explains that although bat manufacturers often advertise that aluminum bats have a wider sweet spot than do wood bats, or that a particular model of bat is more forgiving away than competitor models, that these claims are difficult to verify.

One batting cage study by F.W. Sears found that aluminum and wood baseball bats have similar sweet spots in terms of size according to the range of locations on the barrel that produced the highest batted-ball speeds. While the widths of the sweet regions were the same, the metal bats hit balls faster within the region identified. Of course, a most common sense deduction given the lighter nature of the metal bat.

After his thorough experimentation with each of the sweet spot hypotheses above, Dr. Russell concluded the following as to the location of the sweet spot on a baseball bat:

** There is no single definition of the sweet spot for a baseball or a softball bat. There are locations on the barrel that result in maximum performance and there are locations that result in minimal discomfort in the hands. These locations are not the same for a given bat and there is considerable variation in locations between bats. Hopefully this summary will enhance the understanding of what the sweet spot is and what it is not as well as encouraging further research into the quest for the perfect bat.

Taking both Dr. Russel and the Sear's study into consideration, it sounds like the sweet spot is a sweet region. I may have been right as a kid. Somewhere near the baseball bat barrel's thickness. That's Hoosier common sense for you. Our thanks to Dr. Russell andF.W. Sears for their work in this beloved area of science. Keep up the grail search for that perfect bat.