Translated from Japanese:
Urethane balls basically have a low unnecessary friction coefficient of surface material, and the difference between the oil and the dry part is small due to constant friction, but the pin action is inevitably inferior to the reactive material.
This new material, urethane, has succeeded in increasing the rotational force at the back end and reducing the blurring of the trajectory when hitting the pin.
The overall movement itself is that of a urethane, and the bend is not abrupt, but it is an arc-like bend that matches the rotational force, and the movement of the ball is easy to predict.
The ability to develop new-future urethane products is the result of STORM's development capabilities.
Tour-ethane Solid Coverstock
Rondure Core
A drastic departure from our traditional symmetrical core or symmetrical weight block designs in the HP3 line, the asymmetrical Rondure Core was developed to increase overall ball motion throughout the lane without the aid of an added balance hole since those are now illegal in sanctioned competition. The starting point of this core was creating a low RG core design with a small intermediate split in order to emulate that symmetrical core with an extra hole type motion a lot of bowlers have grown accustomed to. Dynamically speaking, this core will rev up in the midline while providing more motion down lane than your traditional asymmetrical design. The smaller intermediate differential provides continuation closer to a symmetrical design. Thus, making this part the gap filler between asymmetrical and symmetrical core designs.
16 pounds
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12 pounds
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Similar Balls
Ball | Brand | Comparison Grade | Coverstock | Factory Finish | Core | RG | Diff | MB Diff | US/Overseas Release | Discontinued | |
---|---|---|---|---|---|---|---|---|---|---|---|
Rubicon UC3 Trax | Tour-ethane SolidUrethane Solid | 1000 Abralon | RondureAsymmetric | 2.490 | 0.052 | 0.011 | |||||
Rubicon UC3 | A- | Tour-ethane PearlUrethane Pearl | 1000 Abralon | RondureAsymmetric | 2.490 | 0.052 | 0.011 | ||||
Vintage | A- | S26 Solid UrethaneUrethane Solid | 1000 Abralon | Reflector SymmetricSymmetric | 2.510 | 0.048 | |||||
Black Widow Caramel Urethane BGD | B | BP UrethaneUrethane Solid | 500/1000/2000 Siaair Micro Pad | Gas MaskAsymmetric | 2.500 | 0.058 | 0.016 | ||||
Buffalo | B | V82 Urethane SolidUrethane Solid | 1000 Sanded | MushroomSymmetric | 2.486 | 0.044 | |||||
Sword Perfect | B | Controll XG UrethaneUrethane Solid | 3000 Abralon | CentripetalSymmetric | 2.480 | 0.050 | |||||
The One Black Urethane | B | Solid UrethaneUrethane Solid | 1000 Siaair | Centrex Symmetrical Mass BiasAsymmetric | 2.466 | 0.056 | 0.027 | ||||
Hot Cell | B | RadioactiveUrethane Solid | 1000 Abralon | NucleusAsymmetric | 2.520 | 0.056 | 0.018 | ||||
Sword/U | B | Controll Solid UrethaneUrethane Solid | 2000 Abralon | CentripetalSymmetric | 2.480 | 0.050 | |||||
Raw Urge | B | AR350 SolidUrethane Solid | 500/2000 Abralon | IronmanAsymmetric | 2.500 | 0.056 | 0.015 | ||||
Shadow Ops | B | S25 Hybrid UrethaneUrethane Hybrid | 1000 Abralon | BreakAsymmetric | 2.480 | 0.058 | 0.021 | ||||
Big Bro Burn-Up | B- | Reverie (RVR) Pearl UrethaneUrethane Pearl | 2000 Sanded | DominanceAsymmetric | 2.484 | 0.054 | 0.021 | ||||
Black Widow Urethane | B- | UrethaneUrethane Solid | 360/500/500 Abralon | Gas MaskAsymmetric | 2.500 | 0.058 | 0.016 | ||||
Purple Solid Urethane | B- | Hammer Solid UrethaneUrethane Solid | 500/1000 Siaair Micro Pad | FABAsymmetric | 2.550 | 0.051 | 0.014 | ||||
Covert Tank | B- | FrixionMicrocell Polymer | 2000 LSS | TorxSymmetric | 2.500 | 0.051 | |||||
!Q Tour/U | C+ | UremaxUrethane Solid | 1000 Abralon | C3 Centripetal ControlSymmetric | 2.490 | 0.029 | |||||
Rattler NU | C+ | Not Urethane (Radical)Not Urethane | 500/1000 Siaair Micro Pad | RattlerSymmetric | 2.480 | 0.035 | |||||
Pathogen Plague Pearl | C+ | GPS Navigational Urethane PearlUrethane Pearl | 1000 Abralon | SG 19.5 UrethaneAsymmetric | 2.520 | 0.043 | 0.015 | ||||
Black Widow Urethane Pink Pearl | C+ | Urethane PearlUrethane Pearl | 360/800 Siaair Micro Pad | Gas MaskAsymmetric | 2.500 | 0.058 | 0.016 | ||||
Black Widow Purple Pearl Urethane | C+ | Urethane PearlUrethane Pearl | 2000 Abralon | Gas MaskAsymmetric | 2.500 | 0.058 | 0.016 | ||||
Attitude Control | C+ | Urethane PearlUrethane Pearl | 500/1000 Siaair Micro Pad | ContraSymmetric | 2.474 | 0.047 | |||||
!Q Tour 78/U | C+ | Controll 78 Solid UrethaneUrethane Solid | 500 Abralon | C3 Centripetal ControlSymmetric | 2.490 | 0.029 | |||||
Tactic Control | C+ | Control UrethaneUrethane Solid | 500, 3000 Siaair Micro Pad | TurmoilSymmetric | 2.528 | 0.042 | |||||
Red Pearl Urethane | C+ | Hammer Red Pearl UrethaneUrethane Pearl | 500/1000/2000 Siaair Micro Pad | FABAsymmetric | 2.550 | 0.051 | 0.014 | ||||
Reality Check | C | S84 Beta HybridHybrid Reactive | 4k Fast | DisturbanceAsymmetric | 2.490 | 0.052 | 0.018 |