Sum of angles
? What Is the "Sum of Angles" in Bowling Ball Layouts?
In the Dual Angle system, a layout is described by three measurements:
Drilling Angle / Pin-to-PAP Distance / VAL Angle
Example:
60° × 4" × 40°
The sum of angles is simply the Drilling Angle + VAL Angle:
? 60° + 40° = 100° (Sum of Angles)
? What Does the Sum of Angles Control?
The sum of angles determines how early or late the bowling ball transitions from skid → hook → roll.
| Sum of Angles | Ball Motion | Lane Read |
|---|---|---|
| Small sum (≈ 70°–90°) | Earlier roll, stronger mid-lane read | Heavier oil or lower rotation players |
| Medium sum (≈ 100°–120°) | Benchmark reaction, balanced motion | Medium oil conditions |
| Large sum (≈ 130°–160°) | Delayed hook, sharper backend | Drier lanes or high rotation players |
