quote:Article : USBC Equipment Specifications and Certification - Center of Gravity placement on a symmetrical bowling ball: How critical is it? - By Paul Ridenour, USBC research engineerBrunsNick is IMFamous!--------------------SeriousKeglers.com Recognizing, Sharing; Learning - One Frame at a Time; Saving "Bowling as a Sport"Edited on 7/31/2007 4:55 PM
quote:It is worth noting that even though these are minor differences, they are still differences. Mathematically, the difference in position is roughly only about 10 percent; this is not always easy to tell on the lanes observing from 60 feet away. USBC had thought the balls looked very similar in reaction; however, the math paints a different picture.
quote:In closing, both sides of the center of gravity debate should be able to appreciate this study, since it does show a difference between positive weight and side weight; however, that difference only amounts to about a 10 percent difference overall in change of position on the lanes.
quote:P-L-E-A-S-E!! Kill me now...--------------------notclayLane Carter, Strike Zone Pro Shops - Salt Lake City, Utah"The problem is no that there are problems. The problem is expecting otherwise and thinking that having problems is a problem." ~ Theodore Rubin
quote:Just to clarify something, its not four feet in breakpoint, its 4 feet before the first transition. The breakpoint difference is a little over one foot.
quote:the only substantial difference is that the positive CG ball has positive side weight of 1.25 ounces and the negative CG ball has negative side weight of 1.35 ounces.