Torpedo Bats: Are They A "Sink or Swim" For Hitters?

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A ‘torpedo bat’ is a bat that does not have a traditional shape – instead of the traditional slow taper from end to handle, it has a noticeable bulge at the near the end of the bat. When New York Yankees player Giancarlo Stanton began to use one of these bats in games, torpedo bats became a cultural phenomenon. Media outlets declared a revolution in bat design, manufacturers scrambled to meet newfound demand, and fans debated whether the sport had discovered a new technological phenomenon.

The logic feels intuitive. If hitters tend to make contact a few inches below the tip of the bat – near the so-called sweet spot – why not move more wood to that location? More mass where the ball meets the bat should mean harder-hit balls, right? This is precisely what the torpedo bat is designed to do. 

Yet, a bat is not just a lump of wood striking a ball – it’s a dynamic object that bends, vibrates, and recoils. So, to view the bat from a physics perspective, we need to take this into account. As physicist Alan Nathan describes, if we treat the bat as effectively rigid during the time of the collision – meaning vibrations propagate much faster than the time that the ball is in contact – then the ball ‘feels’ the full mass of the bat. In that case, torpedo bats and standard bats would perform identically. But, if the collision is over before vibrations can recruit mass from farther down the bat, only the local mass near the impact point matters. Under those conditions, concentrating more wood near the sweet spot can indeed increase the efficiency of the collision, sending the ball away at a higher speed.

Real-life bats live between these extremes. When a baseball strikes the barrel, it creates a vibrational pulse that travels toward both the tip and the handle. While the pulse traveling towards the handle of the bat does not return quickly enough to matter, the pulse traveling towards the barrel end can. This is why barrel mass distribution is so important.

Using a computer simulation, Nathan compared a standard bat with a torpedo bat that shifts mass toward the sweet spot while keeping overall weight and balance similar. To compare the effectiveness of a torpedo bat with a traditional bat, Professor Nathan used a computer simulation from his earlier 2000 study (“Dynamics of the Baseball-Bat Collision”). His results showed that collision efficiency – the fraction of incoming speed transferred back to the ball – changed with impact location. Near the sweet spot, the torpedo bat’s greater local mass produces a modest advantage. Farther from that region, the advantage disappears or even reverses. Essentially, torpedo bats trade performance at the edges of the barrel for slightly better performance where good hitters already aim to make contact.

Perhaps the most revealing result is that if bat vibrations are artificially “turned off” in the simulation, the performance difference between torpedo and standard bats vanishes. The entire effect depends on the bat’s vibrational response, not on static properties like total mass or shape alone. That is, adding wood near the sweet spot can matter, but only because of how real bats vibrate during impact.

The advantage of torpedo bats is less dramatic than the early concern suggested. Torpedo bats are not magical velocity generators, nor are they meaningless gimmicks. From a physics perspective, they subtly change the bat’s vibrational behavior, expanding the sweet spot of the bat. For some players, that could translate into more consistent contact or slightly harder hits. For many others, the difference may be negligible. 

What is surprising, however, is even with an entire season of data from 2025, there doesn’t seem to be a study on the effects of torpedo bat use – something that hopefully will conducted so we can learn how well on-field performance aligns with what computer simulation results tell us.