Power Potential vs Twistweight
(for impact at 3 o'clock — 21"/3")

How does the power of the racquet for impacts near the periphery relate to twistweight? Is twistweight a good indicator of what the power will be? The graph below shows that there is a relationship between power potential and twistweight. As twistweight goes up, power potential increases in general. It is not as good a relationship as between swingweight and power potential in the center of the strings, but there is definitely a trend. The reason that it is not as good a relationship is that other variables involved in power potential have a greater influence than twistweight. These varibles include swingweight, racquet flex, headsize, and stringbed stiffness, but swingweight is the most important. Thus, the stabilization and power effect of higher twistweight can only be loosely observed in the graph as other factors obscure twistweight's contribution to power potential. However, for a given racquet, increasing the twistweight will always increase the power potential.

You can compare this relationship to that between power potential and swingweight, where there is a very definite predictive relationship.