Roto Grip Reaction Chart | Roto Grip

By: Roto Grip  09-12-2011


Royal Line

Ball Name Stroker Tweener Cranker
Defiant™ Length
Backend

Crown Line

Ball Name Stroker Tweener Cranker
Critical Theory™ Length 7.5 7 6.5
Backend 19.5 19.5 20
Infinite Theory™ Length 8 7.5 7.5
Backend 19 19 19.5
Theory™ Length 6.5 6.5 6
Backend 19 19 20
Mutant Cell™ Pearl Length 9 8.5 8
Backend 18 18 19
Crown™ Clear Polyester Length 20 19 18
Backend 1 2 3

Sword Line

Ball Name Stroker Tweener Cranker
Bandit™ Length 9.5 9.5 9
Backend 15 17 18.5
Outlaw™ Length 9 8.5 8
Backend 14.5 15 15.5
Nomad Dagger™ Length 10 10 9
Backend 14 14.5 15.5

Shield Line

Ball Name Stroker Tweener Cranker
Shooting Star™ Length 9 9 8
Backend 12.5 13.5 14.5
Rising Star™ Length 11 10.5 10
Backend 12 14 14
Grenade™ Length 16 15.5 14.5
Backend 7 8 9

*Rev. Rate- Determined by your local pro shop professional

**Ball Speed- Average ball speed for the player tested Lane Pattern- 39 feet tapered house pattern (18ml total volume-medium oil) Balls- Were drilled with the pin 4" from the P.A.P. & the mass bias in the strong position Length and Backend- Based on 20 scale



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Star Search™ - Roto Grip

Axis Rotation is defined as the Direction the ball is rolling compared to the direction the ball is thrown.Up The Back: When the direction of rotation is "end over end" and the ball is rotating the same direction as it is rolled use this measurement. This measurement is used to estimate the amount of Axis Tilt the bowler imparts on the ball.Low: Low is the measurement that should be used if the Track is 3" or more from the fingers and thumb.