First ImpressionsThe Roto Grip RST HyperDrive is a pretty ball and we were very excited to try it. We had high expectations and we were left partly confounded. Tamer Elbaga (Lefty)Style: TweenerRPM: 330 rpmPAP: 5 & 3/8 upAverage Speed: 18.5 mph (at release)Axis tilt: lowAxis rotation: medium/highTest Equipment: 14 PoundsLayout: 50 x 5 x 45 … Continue reading Roto Grip RST Hyperdrive Bowling Ball Review →