![]() ![]() The optimal tip height for speed control is 20% of the radius above center (see optimal tip height for speed control).With all shots, more speed shifts the cue-ball farther down the tangent line before curving to the final direction (see CB path speed effects).For a fairly thin hit, with a ball-hit-fraction less than 1/4, the CB will deflect about 70-75% (about 3/4) of the angle between the aiming line and the tangent line (see where the CB goes for different cases).For a fairly full hit, with a ball-hit-fraction greater than 3/4, the CB will deflect about 3-times the cut angle (see where the CB goes for different cases).The 3-times-the-angle (trisect) system predicts the angle the CB direction changes for a good-action draw shot is 3-times the cut angle.Dave peace sign can be very useful in applying and making adjustments to the 30° rule. The 30° rule predicts a rolling CB heads in the natural-angle direction.The 90° rule predicts the CB heads down the tangent line for stun shots. ![]()
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