I have seen a couple of websites that attempt to share swing weights for a large number of bats, but they all incorrectly calculate "swing weight" values by simply multiplying the measured balance point by the measured weight. Question: When can a 30oz bat feel lighter than a 28oz bat?Answer: When you swing it! Professional baseball players like Evan Longoria, Tampa Bay Rays third baseman, and Dustin Pedroia, Boston Red Sox second baseman, are now relying on the Hitting Jack-It for building strength & power and improving their hitting skills. This is an ongoing strengthening program that anyone can do. The 16oz. Hitting Jack-It and take 8-10 swings of live batting practice. However, looking at this movie (and assuming this player is not exhibiting some horrendously bad habits) it would appear that the bat undergoes three distinct phases of motion, and that the relative importance of the rotation about the body ωbody and the rotation about the wrists ωwrists is different for each of the three phases of the swing. A player can obtain bats in just about any combination of actual and swing weights. Bats can fall along the swing weight spectrum, from light to balanced to end-loaded. (red) Hitting Jack-It and take 10-15 swings off the tee. But, if you want to hit more home runs (which requires a faster BBS) you'll need to increase your arm and upper body strength and generate a faster bat-swing speed. The period (time for one complete pendulum swing) is measured carefully with an infrared triggered timing mechanism. They both feel the same when I swing them. It is true that placing mass further from the pivot point increases the MOI. Remove the 9oz. Ritend Bat Weights actually promote hands to the ball because the bat weight is placed at the knob end of the bat, unlike Traditional bat weights that are at the barrel end of the bat. article about swing weight and moment-of-inertia, details of how MOI depends on mass distribution. The Hitting Jack-It System quickly builds bat speed and power, and forces the batter’s hands to work properly. Likewise any discussion of the energies involved in the collision must include the rotational kinetic energy of the bat. Each four weeks they incrementally increased the weight of the heavy bat by 1 oz and decreased the weight of the light bat by 1 oz. The Swing weight is a determination of how a bat’s particular weight is distributed along the bat’s length. weight strengthens hands and forearms, and improves muscle memory. Here are some examples of extreme differences between weight and swing-weight. Hitting Jack-It and take 20- 25 live batting practice swings working on driving the ball up the middle. However, while the weight and balance point are related to MOI, calculating the MOI for a bat is more complicated than simply multiplying the two. Same actual weight but different swing weight. Answer: When you swing it! Turn any Bat into a Weighted bat for less than $20 - YouTube Smaller or average sized players or those looking for more bat speed should use a bat in the 25 to 27 oz. The 12oz. As young hitters in the 10 to 11-year-old range and younger, they might have bats that are drop 10, drop 11 weights. Then you need to get the proper muscles moving quicker & stronger and now you can! Customize your bat and swing with official Easton bat grips and weights. Remove the Hitting Jack-It from the bat. You do this for 5 rounds no problem, and check the box that your swing is prime! In the language of sports equipment I'm talking about swing weight. Team composition: 8 to 12 years old, various from rookie to major division (under age privileged) players. When dangled from my fingers the 30-oz Ultra II definitely feels heavier, as it should since it weighs 3 ounces more. Hit 25 balls of the tee working to all fields. from the bat and take 10- 15 live batting practice swings. Here is a bat swing program, that I have used from time to time. weight develops bat speed. Remove the 9oz. (green) Hitting Jack-It and take 10-15 swings. Hitting Jack-It on your bat and take 8-10 swings of live batting practice. Available in different colors and sizes, you can match your favorite team. Secure the 16oz. No additional weight training or batting practice was allowed during the experimental period. still secured on the bat, take 25 soft toss swings again working on driving the ball up the middle. To understand the importance of the rotational properties of a bat and to help illustrate why the swing weight of the bat might be important, let's take a look at the motion of the bat during a typical swing. The increase in bat-swing speed means a player could wait a split second longer before committing to a swing. Does Weight Matter That Much? To determine the weight that’s right for you, swing a variety of bats and see how much weight you’re … With the 9oz. The Varo RAP adds 4 ounces to your bat for live hitting - which is the perfect weight. My weighted bat thesis and training experience is straightforward to the fact you won't necessarily need to read the studies. Slide the Hitting Jack-It onto the handle of the bat with the “wide end” facing up toward the barrel of the bat. An example of one data set (for slow-pitch softball[14]) is shown below. (red) Hitting Jack-It and take 10-15 swings off the tee at about 75%. If you have 30 ounce bat, you’re now hitting with a 34 ounce bat when you slip on the RAP. If a lower MOI bat doesn't hit balls as effectively, why would a player want to switch to a lower MOI bat? At any time if you feel tired, stop and rest. Thus, a player who prefers a lighter actual weight for the first "pull-foward" phase of the swing, but wants a heavier swing weight during the second "wrist torque" rotation phase of the swing just prior to contact can find a bat that exactly suits his/her needs. As of Summer 2008, the only bat manufacturer I am aware of that comes close to listing MOI values for their bats is CE-Composites, makers of the Combat® line of baseball and softball bats. I use a bat weight that is adjustable from Skilz. “In this study, eight baseball and softball players attempted three sets of 15 bat swings during which they hit a ball suspended on a cord. If you are uncertain about the weight of the bat, consider trying teammates’ bats of different weights to determine the correct weight for you. In contrast, the bat-swing speed for all players was noticeably slower for larger MOI bats than for smaller MOI bats with the same total weight (right graph below). Waiting a couple of milliseconds would allow a player to watch a fast-pitched baseball travel an additional 5-6 feet before having to commit to a swing - and that additional time (distance) could enable the player to distinguish between a curve or sinker, or between a strike or ball. You can go higher with the heavier bat weight for the first part of the drill. range. Remove the 16oz. With the 9oz. This cannot be a realistic analysis, then, since the very act of swinging the bat involves a rotational component of motion. The Hitting Jack-It System solves this problem; its design keeps hands from casting while building power, bat speed, and using proper form. 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