Bill Sempsrott, Author at Bowling This Month

The Effect of Plugging and Redrilling on Bowling Ball Mass Properties

An analytical study of several common plugging and redrilling scenarios

It's probably fair to say that nearly all of us have owned a plugged bowling ball at some point in our bowling careers. Maybe we got a ball from a friend and had it plugged and redrilled to fit our... [Read More]

Understanding Bowler Delivery Parameters

How ball speed, rev rate, axis rotation, and axis tilt influence your ball’s on-lane motion

Contributed By: Bill Sempsrott

Understanding Bowler Delivery Parameters

Bowling balls, coverstocks, RGs, differentials, layouts, balance holes, and surface adjustments are all important parts of the modern game. It is very valuable for bowlers to learn about and experiment with these elements as they build their knowledge of the... [Read More]