Roto Grip TNT - HP3
Coverstock: eTrax+ Solid - 2000 grit Abralon
Core: Torpex
RG: 2.47 Differential: .052 (15 lbs)
Layout: 5 x 4 ¾ x 2 ½
PAP: 6" Right, 1 3/8" Up
Axis Tilt: 16°
Rotation: 51°
Rev Rate: 450-500
Speed: 17-18 mph
Location: Vista Lanes - Yorkville, NY
Pattern: Kegel Stone Street


TNT is dynamite with the Torpex core and eTrax PLUS solid coverstock. The torque sphere within the core creates a lower RG and higher differential which translates to more overall motion and less deflection through the pins. eTrax+ is cleaner than MicroTrax, but more aggressive than eTrax. The design intent was for the TNT to be a benchmark ball on medium to heavy patterns, much like the original Idol. The TNT gave me a good look to the pocket on the house pattern looking 15-16 at the arrows with my breakpoint around 7-8. As the lanes broke down I was able to move left, but not open my angles as the ball either overreacted off the friction or struggled to make the turn down lane. I expect the TNT to be an excellent ball on flatter, higher volume patterns because it is early, smooth, and predictable. It will slot below the Roto Grip Gem or 900 Global Realty and above the Roto Grip Idol Cosmos or Storm Phaze II. If you are looking for a ball that starts up early, but still provides great continuation, the TNT hits the mark! Stop by your local Storm VIP pro shop to check it out! Available on February 17th.


Dave Jecko
Storm Amateur Staff Member