Tag Archives: rock star

Bowling Ball Reviews, General, Mid Late, Roto Grip

Roto Grip Rock Star Amped

First ImpressionsThe Rock Star Amped is another pearl symmetric in the SPI lineup but unclear how it differentiates itself to make it a must have. Tamer Elbaga (Lefty)Style: TweenerRPM: 365 rpmPAP: 5 & 3/8 upAverage Speed: 18.5 mph (at release)Axis tilt: lowAxis rotation: medium/highTest Equipment: 14 PoundsLayout: 5 x 45 Bryan Hoffman (Righty)Style: StrokerRPM: 280 … Continue reading Roto Grip Rock Star Amped →

General, Mid Control, Roto Grip

Roto Grip Rock Star Bowling Ball Review

Paragraph First ImpressionsThe Rock Star is smooooooth. 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: 4 x 40 Bryan Hoffman (Righty)Style: StrokerRPM: 280 rpmPAP: 4 1/2 & 1 1/2 upAverage Speed: 18.5 mph (at release)Axis tilt: highAxis rotation: mediumTest Equipment: 14 … Continue reading Roto Grip Rock Star Bowling Ball Review →