Like the choice of string, the initial tension level also has a strong influence on the character and playability of your badminton racquet.
Tension is the application of force/pull to the strings by a machine to achieve the desired playability of the string bed. Most modern racquets are strung at 20–27 lbs (9–12,5 kg). The lower the tension, the more trampoline effect the player will experience.
- a lower tension level provides more power
- a higher tension level provides more control
Based on the chosen string or string combination, each player has to find out for himself which tension level gives him the best feel for the shot.
A string is subject to natural aging regardless of whether it is used. From the time the string is installed, it will begin to lose tension, often more than 10% within the first 24 hours. After that, the drop of tension slows down significantly, but it continues, even if the racquet is not played at all. This is especially true when a racquet is exposed to major temperature fluctuations or direct sunlight.