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Symmetric Vs. Asymmetric Bowling Balls: Explaining The Core Differences At a Base Level

Posted by I Am Bowling on 7th Aug 2023

Are you an avid bowler or just getting started in this exhilarating sport? Either way, you've probably come across the terms "symmetric" and "asymmetric" bowling balls. These two types of balls play a crucial role in how the ball behaves on the lane and can significantly impact your game. 

The Core: The Heart of the Bowling Ball

At the center of almost every bowling ball there is a piece referred to as the "core." The core is the innermost part of the ball, influencing its motion and overall performance. Understanding the distinction between symmetric and asymmetric cores is vital to improving your game and making informed decisions when selecting the right ball for you. These are generalizations of the types of cores, and may not apply to every bowling ball. 

The other important piece to understand is that coverstock and drilling layout both play a key role in ball reaction as well.

1. Symmetric Bowling Balls:

Symmetric cores are known for their consistency and evenness in motion. These cores have a shape where the mass distribution is symmetrical about the ball's vertical axis. The most common shapes include the pancake or round shapes, which lead to a smooth and predictable roll down the lane.

When a symmetric bowling ball is thrown, it demonstrates a controlled motion, making it an excellent choice for beginners and players who prefer a consistent reaction. Symmetric cores are ideal for handling medium to dry lane conditions, where control and predictability are key to achieving success.

2. Asymmetric Bowling Balls: 

On the other hand, asymmetric cores possess a more complex mass distribution, creating an imbalance within the ball. These cores come in various shapes, such as elliptical or mushroom-like designs. The imbalance causes the ball to rev up more aggressively and respond to friction with increased hook potential.

Asymmetric bowling balls deliver a stronger backend reaction, making them a favorite among experienced bowlers and those aiming for high-performance shots. They are particularly effective on heavy oil conditions, as their dynamic motion helps them drive with more energy.

Stay tuned to hear about the differences between RG, Differential, and Intermediate Differential. These will also help you when deciding what ball is right for you out on the lanes.