Customizing Racquets

When customizing racquets, you will generally have target values for overall mass, balance point, swingweight, and possibly twistweight. Overall mass can be measured effectively with a scale that measures to the nearest gram or better. Balance can be measured with a simple balance board that you can buy or make.

It’s possible to hit the target values by trial and error. If using this method, use some putty (clay, Blu-Tack, etc.) to add mass to the racquet and measure the results. When you reach the target, replace the putty with a suitable permanent mass.

The effect of adding mass can be accurately predicted with simple math. Briffidi has released this Google Sheet to calculate the predictions. First, save a copy to your Google Drive, so you’re able to modify it. Then, as shown in the examples, input your measured values on the left side. Enter up to five different masses and locations. Predicted values will be shown on the right. Most column headings include notes with additional information. Until you are confident in the predictions, you may want to add the mass with putty and re-measure before adding permanent mass.

Matching Racquets

When matching racquets, you are generally looking to add the least mass possible to achieve matching results. Measure all of the racquets and put the results into the Google Sheet linked above. Then, enter masses and locations by trial-and-error to achieve matching predicted results.