Whats The Difference Between Pin Up and Pin Down | In Depth Guide!

Understanding Pin Up vs Pin Down Bowling Ball Drillings

A key factor influencing a bowling ball’s performance is the drilling layout, specifically whether it’s pin up or pin down. Pin up drilling positions the pin above the finger holes, increasing the ball’s differential and decreasing its RG. This results in a ball with higher hook potential that responds to friction earlier and more quickly, creating a sharper and earlier hook. Conversely, pin down drilling places the pin below the finger holes, decreasing the differential and increasing the RG. This leads to a ball with reduced hook potential, a longer skid length, and a smoother, more gradual reaction down the lane.

While surface adjustments play a significant role in fine-tuning ball reaction, understanding the impact of pin up and pin down drilling is essential for bowlers to optimize their equipment. A pin up drilling is generally preferred on lanes with heavier oil volume, where an earlier and sharper hook is necessary to navigate the oil pattern and reach the pocket effectively. On the other hand, pin down drilling is more suitable for lanes with lighter oil volume, allowing for a longer skid and a smoother breakpoint, maximizing hitting power on drier conditions.

Ultimately, the choice between pin up and pin down drilling depends on a bowler’s individual style, lane conditions, and desired ball reaction. Consulting with a knowledgeable pro shop operator is highly recommended to determine the optimal drilling layout for each bowler’s specific needs. By understanding the fundamental differences between pin up and pin down drillings, bowlers can make informed decisions to maximize their performance on the lanes.

900 Global Eternity Pi Bowling Ball

The Eternity Pi represents a new option for heavy oil performance in the Global lineup. The ALL-NEW Reserve Blend 901 Cover with its 2000-Grit Abralon finish will provide you with great traction through the front part of the lane. Combined with the Epoch Asymmetric Core, this new offering will give you a heavy oil ball with a completely different motion than our other proven 900 Series heavy oil option, the Reality.

THE EPOCH ASYMMETRIC
The Epoch Asymmetric Core from the original Eternity makes its return to the Global arsenal. With a design inspired by the original Break Core found in so many classic Global releases, this core gives the player that great asymmetric shape on the lanes. Additionally, the moderate amount of intermediate differential will keep the core from “locking up” or losing energy too quickly.

RESERVE BLEND 901 SOLID COVERSTOCK
The Reserve Blend 901 Solid Cover has been hand-crafted to give you a different look versus the previously used S84 Response that was utilized on so many 900 Series releases. While still very much a strong cover, expect to see a cleaner motion through the front part of the lane when comparing to S84 Response. This was necessary due to the strength of the Epoch Core and to differentiate this heavy oil ball from the Reality.

900 Global Eternity Pi Bowling Ball

$289.95 $159.95

BRAND	900 Global
BOWLING BALL CORE SHAPE	Asymmetrical Core
BOWLING BALL CORE NAME	900 Global Epoch Core
BOWLING BALL COVERSTOCK TYPE	Reactive
BOWLING BALL COVER NAME	900 Global Reserve Blend 901 Solid Reactive
RADIUS OF GYRATION: RG (15LB)	2.49
DIFFERENTIAL: DIFF (15LB)	.050
MASS BIAS STRENGTH	.014
FLARE POTENTIAL	4 – 5 Inches
SURFACE FINISH	2000 Grit
BALL LANE CONDITIONS	Medium – Heavy Oil
BALL WEIGHT	12LB, 13LB, 14LB, 15LB, 16LB
BOWLING BALL COLOR	Black, Red, White
BALL PERFORMANCE LEVEL	900 Global 900 Series Bowling Balls, High Performance Bowling Balls
SCENT	None
RELEASE DATE	September 2023

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