Hammer Obsession Tour Pearl vs Roto Grip RST X2 Bowling Ball – Battle Of The Asymmetrical Pearls

Hammerheads have been obsessed with the Obsession Tour since its release in February. The Obsession Tour provided an incredibly unique ball motion, and bowlers have wanted more of it, but for lanes in transition and breaking down. The Obsession Tour Pearl glides effortlessly through the body of the lane and has an aggressive motion continuation movement throughout the backend and through the pin deck. The Obsession Tour Pearl is an all-gold ball that Hammer fans will love!

COLOR: Gold
CORE: Obsession Tour
COVERSTOCK: TourV2 Pearl
COVER TYPE: Pearl Reactive
FINISH: 500, 1000, 1500 Siaair / Crown Factory
Compound WEIGHTS: 16-12 Pounds
LANE CONDITION: Medium oil
REACTION: Skid / Flip
WARRANTY: Two years from purchase date

RG
16LB – 2.484
15LB – 2.469
14LB – 2.485
13LB – 2.597
12LB – 2.593

DIFF
16LB – 0.029
15LB – 0.034
14LB – 0.034
13LB – 0.041
12LB – 0.041

ASY
16LB – 0.011
15LB – 0.013
14LB – 0.013
13LB – 0.014
12LB – 0.014

Given the continued success of the RST X-1, we knew the next ball in the series using the Roto Star Tour Core was going to need a special coverstock wrapped around it as well. So, after countless tests involving multiple players of different styles, we determined that the eTrax pearl material gave us the type of reaction we were looking for, but we wanted something a little more while still using that same chemistry. So, the R&D team went to work changing the ratios and other variables until we settled in on the NEW eTrax PLUS Pearl Reactive formula that provides a larger footprint throughout the entire lane without reducing the responsiveness to friction down lane. Creating yet another viable pearlized coverstock option for the Roto Grip family of balls.

Professional bowlers like to see continuous motion down lane with minimal deflection as the ball enters the pocket due to their rev rates usually being on the higher side. This logic was the basis of development by the R&D team as they looked to create a core that would maintain dynamics after drilling in order to maintain a higher level of core torque down lane. The larger mass at the base of the core does indeed create that. Especially since when drilled, the thumbhole will always end up in the void area not really affect the bottom mass of the core. Thus, making this core a “Tour Level” type core design better known as the Roto Star Tour Core (RST Core).

Coverstock Name E-Trax+
Coverstock Style Pearl
Coverstock Type Reactive
Weight Block RST Core = Roto Star Tour (Asymmetrical)
Color Tanzanite
Finish 1500 Polished
Finish Method Can be Polished OR Can be Sanded More
Durometer 73-75 on D-Scale
Flare Potential High
Weights 16lbs – 12lbs

RG: 2.53
DIFF: .053
PSA:.016