Roto Grip Uproar Ball Specs:
- Color: Orange Pearl/Ruby Pearl All colors do vary somewhat from the picture shown.
- Reaction: Good Length and Strong Down-Lane Recovery
- Coverstock: 51ML Pearl Reactive
- Core Type: Late Roll 51
- Factory Finish: 1500-grit Polished
- Radius of Gyration (RG): 2.55**
- Differential (Diff): 0.030**
- ** RG and Diff are based off of 15 lb. balls
- Hook Potential: Medium-Low
- Length: Long
- Recommended Lane Condition: Light-Medium Oil

Layout 55 x 4 1/2 x 70.

I drilled this ball using a 55 x 4 1/2 x 70 dual angle layout.  This puts the pin below my ring finger with the cg kicked out.  After throwing this ball for the first time all I could say is WOW!  Even with this layout the UpRoar made an amazing move off the spot.  On the house shot I could move as far left as I wanted and this ball would get down the lane and go left. 

When I drilled this ball I was under the impression that I would be able to begin moving back to the right when things broke down.  The great thing about the UpRoar is that I really do not have to move right.  If I am throwing a stronger piece of equipment and it just becomes overly aggressive, the UpRoar allows me to stay in the same spot and keep on going.

Here is an example.  I was throwing a Hyper Cell at 3000 grit.  After about a game the Cell was just too much ball.  I decided to move right and throw the UpRoar.  First ball BOOM Solid 9 pin.  After a few frames I was throwing the UpRoar from the same spot as the Hyper Cell and it was great. 

The UpRoar pushes down the lane with ease.  Don't let the HP2 rating fool you because this ball does move.  If you are looking for a ball to use later in blocks or if you have problems getting some of the more aggressive balls to get down the lane this is a ball you should consider. 

OOB surface on the UpRoar is 1500 Polished.  The UpRoar did roll good with this surface but seemed to go  a little bit long for me.   I hit the ball with a 2000 grit pad to get rid of some of the polish and this ball came to life for me.  It also made this ball very forgiving.

The following video shows the UpRoar compared to the Asylum.  This was done after a few games on the pattern and before I changed the surface on the ball. 



Louis Narvaez Jr.
Storm/RG Pro Shop Staff
www.strikingresultsproshop.com

The NEW Roto Grip UpRoar is the perfect new addition to the HP2 line. With the discontinuing of the Shatter, the uproar compliments the Wrecker and the Rumble perfectly. The cover/core combo on the Uproar gives it an extremely clean look through the front, and monster continuation in the back. When the rumble and wrecker are a lil too early rolling, the uproar is the perfect go to ball. I drilled mine with my basic pin down layout (45x4x75), and the motion i got out of this ball down lane was as if it was a high performance symmetric ball. This is a must have ball for all bowlers looking for a great league ball, or something for mid to later parts of a tournament. Own It!!!


Erik Ramos
Storm/Roto Grip Staff

Perfect for medium to dryer conditions, especially on sport or wet/dry conditions.  It has that mid-lane smooth roll rarely seen in these lower end bowling balls.  Very predictable motion down lane and doesn’t over-skid.  I have this one drilled 5X4 with 2000 polished on top. Never afraid to bring this one out of the bag and a must for Open Championships after the shot breaks down.  Averaged 240 last 3 games with this ball at Texas Masters.  Another female student used it with confidence for last 7 of the 8 games in Blue Bonnet tournament.  Wouldn’t have made cut without it.