The Differential indicates the potential for track flare which can be translated into hook potential. This indicates the difference between the low RG and the high RG. The RG Differential (also called just DIFFERENTIAL). The lowest allowed by the USBC is 2.43 the highest is RG 2.80. The lower the RG, the sooner the ball is designed to roll. The RG of a bowling ball tells you how soon the core is designed to roll. Also, the USBC rates them to have a tolerance. So that is why you see these numbers on a balls specs. Because of so many different style bowlers and bowling lane conditions, the ball companies make different types of balls, and are trying to make a ball that will sell.
You choose a bowling ball to match your style and the lane conditions you bowl on. These two things are what influence the bowling ball motion. The cover stock is like the tires on a car and the core is like the engine. First I must address cover stocks and cores. I am sure some of you have wondered what does some of the numbers on a bowling ball technical sheet mean and how does it affect me, the bowler. I first must tell you I am not a scientist or a ball designer. I will try to address this simply and with as little confusion as possible. RG Differential and RG What Does This Mean? Terms Used In Bowling Ball Specifications RG And Differential Bowling Ball Specifications
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