Racquet Recommender
Start with a racquet and use measured specifications and performance characteristics to identify suitable alternatives.
Open toolInteractive tennis science
Racquet and String Tools
Turn laboratory measurements into comparisons, equipment choices, customization plans, and what-if experiments. Choose a category below or browse the complete directory.
The Tennis Physics home page highlights a few useful starting points. This directory collects the full racquet, customization, and string tool sets found throughout TWU.
Racquet Tools
Selection, performance, impact and customizationSelection and comparison
Racquet Performance Analysis
Compare racquets across power, sweet-zone size, swing speed, spin, plow-through, shot speed, launch angle, and trajectory.
Open toolSimilar Racquets
Find racquets with closely matching static and dynamic measurements, then compare them with a selected reference racquet.
Open toolCompare Racquets
Place measured racquet specifications and performance properties side by side for direct comparison.
Open toolPerformance and impact
Power Potential
Compare the percentage of impact speed returned by the ball at measured locations across the stringbed.
Open toolSweet Zone Size
Map and compare stringbed areas that meet selected power-potential thresholds.
Open toolPlow-through
Compare how racquet mass distribution and impact location affect racquet slowdown and continued motion through impact.
Open toolShot Speed
Compare predicted outgoing ball speed using measured racquet properties and impact conditions.
Open toolHittingweight
Explore the effective mass presented by a racquet at different impact locations.
Open toolRacquet Contribution
Examine how much the racquet contributes to shot speed under different swing and impact assumptions.
Open toolShot Trajectory
Compare ball paths, speed, spin, launch angle, net clearance, and distance while changing one input at a time.
Open toolVibration Frequency
Explore racquet vibration frequency and the measurements that influence vibration behavior.
Open toolCustomization and measurement
Customization Tool
Enter current and target racquet specifications to calculate where and how much mass to add.
Open toolCustomization Worksheet
Specify an added-mass location and amount to calculate the resulting weight, balance, and swingweight.
Open toolSwingweight Calculator
Calculate swingweight from simple pendulum measurements made without a dedicated swingweight machine.
Open toolString Tools
Selection, performance, stiffness and frictionSelection and comparison
Find Similar Strings
Start with a known string and find alternatives with similar measured playing characteristics.
Open toolCompare Strings
Compare two strings across material, stiffness, tension loss, energy return, spin potential, and friction.
Open toolString Performance Database
Search and sort the full measured string dataset across the major properties that determine performance.
Open toolMeasured properties
String Stiffness
Compare dynamic stiffness and related measurements that influence feel, comfort, power, and spin behavior.
Open toolSpin Potential
Compare the measured spin-potential indicators of strings and string combinations.
Open toolString-to-String Friction
Compare friction between strings, an important influence on lateral movement and snap-back.
Open toolBall-to-String Friction
Compare friction between the ball and string surface, which affects sliding, gripping, and spin transfer during impact.
Open toolExplore the evidence
See the experiments behind the measurements.
The tools summarize and apply measured results. The experiment and article directory explains the apparatus, methods, physics, and conclusions behind them.