It is the same physical measurement as swingweight but about the racquet's lengthwise axis instead of one perpendicular to it. Swing speed is the racquet speed at the point of impact. from butt and 2 in. The relative velocities are shown as the lengths of the respective arrows (though not shown to scale and meant only for illustration purposes). Power potential can be measured anywhere on the racquet (TWU measures 15 locations), but for comparison purposes we compare at 21 in. This process is painstakingly controlled, but still there is variability and every parameter has an acceptable range of variation about a target value. Yonex: V CORE SV 100: Dunlop: FX 500: Volkl: V-Feel 9: Babolat: Pure Drive Tour (2018) Tecnifibre: TFlash 300 CES: Key Points . A player might like the resulting performance but not the feel, like the feel and not the performance, like both, or hate both. Why is swingweight on the horizontal axis in every graph? There is also less scatter for same speed swings because that eliminates the influence of swingweight on swing speed and the resulting shot speed. Two factors mitigate against this having much significance. The more mass located at further distances (e.g. The main properties that influence off-center and not on-center hits are twistweight and vibration frequency (stiffness). Launch angle decreases with an increase in swingweight, and increases with a decrease in swingweight. At the same time, more mass toward the head requires more effort to generate swing speed. and assembled by hand. Power potential is so important because it is the net result of every single characteristic, spec, and use of the racquet. Cors is blocking my post request to the server. Also along this length there are two locations known as nodes, which if hit, do not initiate longitudinal racquet bending and vibration. 5. 3. Some of these brands you may have heard of while some you certainly must. This deceleration increases as you hit toward the tip or to the peripehry of the stringbed. 4. Why are the TWU specs often different than the TW specs? Why are the similar racquets sometimes located far away from the reference racquet in some of the graphs? The size of the sweet zone area is the result of all racquet properties as they combine to launch the ball from each location. The power potential is measured at in the middle of the stringbed at 21 inches from the butt. Sure, it's a new year, but we're in worse shape right now than we were all of last year. This is important to determine how a player may or may not potentially benefit from a racquet change. The racquet's contribution to ball speed is known as "bounce speed" and can be caluculated as the ball speed minus the racquet speed at the impact point. ), it could very well be called the "performance potential.". In other words, it is the area from which the ball will bounce from the racquet with at least 30% of it's incident speed. If it is 5%, then a racquet with a swingweight spec of 300 could acceptably come in from 285-315 kg x cm2 and balance spec of 33 could be 31.4-34.6 cm. Feather Shuttlecock or Plastic Shuttlecock – Which one to choose? Increasing swingweight and twistweight always increases the racquet's power. The high swingweight racquet will have more power, greater bounce speed, slower swing and lower launch angle. The drag coefficient is 0.51. The relative velocities are shown as the lengths of the respective arrows (though not shown to scale and meant only for illustration purposes). The customizations offered here are just examples of how customization affects performance. On-center hits were always faster than off-center hits (for hits at the same distance from the racquet end — 21 inches here). Bounce speed plus swing speed equals shot speed. ∨ 1. If you now click instead on the center impact choice, the graph will tighten. What are the assumptions for the shot used in all the graphs? 4. Therefore, choosing the best shuttlecock is just as important as finding the perfect racket. 1. 4. Power zone size depends most on swingweight and twistweight. All racquets in the green rectangle compared to the clicked purple racquet. If, for example, the nominal target is 300, the actual swingweight might vary between 291 and 309. All Around Rackets. String Stiffness: The Alpha and Omega of String Performance, How To Measure Your Racquet's Swingweight, Maximum Shot Speed — Where To Hit on the Racquet, Weight, Balance and Swingweight Explained, Tennis Ball Trajectories: Aerodynamic Drag and Lift in Tennis Shots, Tennis Shoe Cushioning: Impact Testing To Compare Tennis Shoes, Tennis Shoe Traction: Developing A Test Rig To Measure Shoe Traction On Tennis Courts, Foam Cushioning Properties: Choosing Material for Tennis Shoe Soles, Hockey Stick Contribution to Puck Speed in Slap Shots, Introduction to the Physics of Hockey Sticks. The target speed for all calculations is 50 mph. The Similar Racquet Tool will always find a list of racquets that are closest in all specs. Power potential derives primarily from the amount and distribution of mass, both lengthwise and widthwise — farther from the axis of rotation increases power potential (see swingweight and twistweight). These limits guarantee that 1-10 (or so) most similar racquets will be highlighted. The ball will also travel farther and have a longer flight time. Twistweight comes into play on off-center hits — higher twistweight yielding greater shot speeds (hence more scatter in the graph). The TWU search algorithm takes all these ranges into account to find the most similar racquets. Recommended. There are a gazillion sports brands out there. In each of the following figures, the swing speed (v swing) is added to the bounce speed (v bounce) to obtain the resulting shot speed (v shot) and angle. 5. Swingweight is a double-edged sword. Second, any racquet that is on the low side of a desired value can be precisely customized with lead tape (see the Customization Tool). ∨ 3. String Stiffness: The Alpha and Omega of String Performance, How To Measure Your Racquet's Swingweight, Maximum Shot Speed — Where To Hit on the Racquet, Weight, Balance and Swingweight Explained, Tennis Ball Trajectories: Aerodynamic Drag and Lift in Tennis Shots, Tennis Shoe Cushioning: Impact Testing To Compare Tennis Shoes, Tennis Shoe Traction: Developing A Test Rig To Measure Shoe Traction On Tennis Courts, Foam Cushioning Properties: Choosing Material for Tennis Shoe Soles, Hockey Stick Contribution to Puck Speed in Slap Shots, Introduction to the Physics of Hockey Sticks, All racquets swung with same effort as 310 swingweight at 50 mph (default). This varies at each impact location and it is the "effective" mass at that point. 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