Assuming the same string, a 10% decrease in tension increases rebound speed by around 2% and launch angle around 1*. These aren't massive differences but can be enough to keep more balls from missing long or missing into the net. If you want a lower launch with the string you currently play, up the tension 10% (or more).
The main strings, or mains, are those that run vertically from the throat to the tip of the frame. The number of main strings is always listed first. The number 18 refers to the number of cross strings. The crosses, as they are often called, run horizontally across the racquet. The number of mains and crosses in your racquet affects performance.
More Tennis String Launch Angle images
The launch angle of the ball will be lower Tension does not have a direct impact on spin production as thing are more complex here, but higher tension enables you to swing faster and producing more spin without overhitting, but under different circumstances, lower tension offers more spin.
This, in turn, decreases spin, lowers launch angle, and stiffens the stringbed parallel to the strings. This is perceived as a loss of power and spin as well as an increase in stiffness, harshness, and pain, especially if the player starts swinging even faster to compensate.
The launch angle for Lynx Tour seemed slightly lower than some other gear-shaped polyesters I have tested, which is why I believe the edges on the Lynx Tour may not be as sharp. Regardless, this string provided some serious ball rotation from start to finish of the playtest."
The launch angle off the stringbed was a tad higher, which lead to more depth, but that was easy for me to adjust to. I also liked the way the string settled into the stringbed, and I thought my control improved both with the life of the string and with me getting more and more used to it.
Over time I had to find ways to adjust for the lower level of spin and the reduced launch angle, but I was able to maintain consistent play and appreciated the string’s ability to maintain a clean cushioned feel until it broke. Overall . Babolat brings a new power-oriented string to the game with the introduction of RPM Power.
Textured Strings. These are the strings that have an added raised band to give the string tecture. The idea of the this tecture, is to produce more spin on the tennis ball. Other strings such as Gamma Gut 2, have tiny groves that give the string more texture.
Co-polyester strings are polyester tennis strings that combine various additives to change their playability in the racquet. For example, to make them softer, more elastic, or better at tension maintenance etc. Whereas a pure polyester string refers to monofilament made from a single polymer called polyethylene terephthalate (PET).