Questions about tennis racket data.

Data explanation: 1pts has a light head, that is, the balance point of the racket is near the handle 1 point;

Formula: 1pts = 1/8 inches =1/8 * 25.4mm = 3.175mm = 0.3175cm.

For a racket with a nominal length of 27 inches or 68.5cm, the balance point is 31(68.5/2-0.3175 = 33.9) cm away from the handle. The balance point value of the head weight plus the midpoint.

NSIX-ONE 90,9 nods gently, that is, 68.5/2-0.3175 * 9 = 31.4, that is, the balance point is 3 1.4CM away from the handle number. The number on the website is 3 15, which is different because the rounding point I took is more accurate.

1 nodding weight, that is, 68.5/2+0.3 175=34.5CM, that is, the number of grips from 34.5CM. ..

Most rackets will be lighter than the original weight, which we can understand as saving some weight through inertia. O3 is an exception. The oversized hole reduces the resistance and makes the racket swing much lighter than its own weight. I wonder if there will be a situation where the self-weight is 350 grams and the swing coefficient is less than 300. This index suggests that you try it yourself before you feel it. Because the swing weight is greatly influenced by factors such as hitting mode and position.