The Roto Grip Unhinged is the pearl version of the Hysteria. It uses the same late roll 69 core that has an Rg of 2.58, and a differential of 0.049. The cover is a pearl reactive called 60M and is finished to 1500 grit polished. The cobalt blue pearl color makes for a very attractive ball. I drilled my Unhinged 5.25x5x2.25. This layout puts the pin about ¾†above my ring finger, and the cg in my palm, with no extra hole needed.
The Unhinged gives me great length with a smooth roll off the dry. This ball doesn’t overreact to the dry boards, even though it is a polished pearl. The Unhinged is a solid 3 and 2 move left with my feet compared to the Hysteria. The Unhinged gets down the lane like my old trusty faithful Victory Road Pearl, but has a smoother change of direction. I have been able to use the Unhinged on a few different house shots, all being of the medium length and medium to lighter volumes of oil. Higher volumes of oil would call for some surface adjustments, as the cover and core really has some built in length. The Unhinged will round out an arsenal for a bowler that really wants some length out of the ball, without having to over muscle the ball down the lane.
The Rg of a bowling ball tends to be very important for me and my style of play because I have a softer ball speed and release. Based on this, I can get high Rg, high differential bowling balls down the lane further and better than low differential, medium to low Rg bowling balls. A ball like the UpRoar or Punch Out, although technically weaker cores, hook earlier and more for me than a higher Rg ball like the Unhinged. It is very important to know your individual game, when it comes to making a ball selection, and trying to fill out your arsenal. Knowing that you are speed dominant or rev dominate, or matched will help give reason to why your Unhinged is hooking less than another ball that it is supposed to be hooking more than, or vice versa. Thank you for taking the time to read my review of the Roto Grip Unhinged.