AzB Silver Member
Thanks for adding. Your measurements seem to be centered more around wear of used balls (CB vs object) and how that affects playability. The purpose for my measurements was to illustrate the weight tolerances across a variety of manufacturers and sets of mostly new/slightly used examples in an effort to dispel any myths regarding the quality control (in terms of weight) of certain phenolic ball manufacturers. As the data shows, the offerings from China and South Korea have very similar weight tolerances than the gold standard Aramith Tournaments and IMO, are slightly better than a new set of Brunswick Centennials which are also made by the folks that bring us the Aramith products. At the end of the day (in terms of weight), a quality phenolic ball is just that, regardless of who it was manufactured by.FYI, many years ago, I took a bunch of weight measurements at a local pool hall. Here's a summary of the results from “Ball Weight and Size Difference Effects – Part I” (BD, February, 2012):
To see how much ball weight can vary in typical conditions, I took an accurate digital scale to my local pool hall (“Match Ups” in Fort Collins, Colorado). I weighed the CB and randomly selected OBs (and the 1- ball specifically) in each of eight Valley bar boxes with the assistance and permission of the owners. (Thanks Mike and Nicole!) The CB weights were fairly consistent with an average of 5.89 oz (167 g), a minimum of 5.78 oz (164 g), and a maximum of 5.93 oz (168 g). The OB weights were lighter (2-3 percent on average) and less consistent with an average of 5.75 oz (163 g), a minimum of 5.47 oz (155 g) and a maximum of 5.89 oz (167 g). The lightest OB was a 1-ball, which makes sense based on the extra abuse it takes (but this could also just be coincidence). If the heaviest CB were paired up with the lightest OB, the percentage difference would be about 8%.
FYI, I also have more info and related video demonstrations here:
One such myth as referenced in another thread: