![]() ![]() ![]() In turn, these affect the feelings a player has in terms of power, control and stress on the body. The coefficient of restitution measures the elasticity of the collision between the ball and the racket (a higher COR means more elasticity (liveliness). While I won’t go into detail about the different types of stringing machine and their efficacy, it’s worth noting that although a calibrated machine will pull a string to the pre-determined tension, the real tension of the finished racket will typically be slightly lower due to slight tension loss in the installation process.ĭwell time is the length of time the ball stays on the strings. Then as the stringer begins pulling strings through the frame, the machine will pull every string to the appropriate tension. Usually specific to what the player has requested or in the middle of the range recommended for the racket if unsure. This tension measures weight being applied to the string as it’s pulled through the racket by the stringing machine and expressed in either kilograms or pounds.īefore stringing commences, a racket technician will set the stringing machine at the required tension. Whenever a tennis racket is strung, be it at the factory to be sold as a pre-strung frame or by your local stringer, a specific tension is applied to both the cross and main strings.
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