Ball NPS Score: 100.00
Roto Grip Rumble Ball Specs:
- Color: Orange/Black All colors do vary somewhat from the picture shown.
- Coverstock: 55M Solid Reactive
- Core: Late Roll 51â„¢
- Factory Finish: 2000-grit Abralon
- Reaction: Medium-Low
- Recommended Lane Condition: Medium
- A few tiny pit holes in the cover stock of the ball are normal

Description: This is your ball on Medium Lane Conditions, the 55M Solid Reactive Coverstock allows this ball to be the bridge between the Roto Grip Wrecker and the Roto Grip Scream & Shout. When you need something for more broken down lanes let this be your go to. The Roto Grip Rumble will react for you, give it a try!

This is my control ball. I drilled it 6 x 5-1/2 and left the factory finish 2000 grit on my Rumble. I go right to this ball when my benchmark balls have trouble staying in the pocket.
The 2000 grit factory finish is clean through the heads without being squirty or grabby and the layout keeps over/under to a minimum. On a 42' THS I slid 24 and got it anywhere from 11-14 at the arrows and hit the pocket strong. I had 2-3 board area at the breakpoint. The ball keeps the pins low on the deck and I recommend it for bowlers that encounter competitive and /or difficult lane conditions.

Right Handed
Ball weight:  14
Rev Rate:  378
Ball Speed:  18.2
Axis Tilt:  6.67
Axis Rotation:  45*
PAP:  3 7/8 horizontal, 1 ¼ up
Layout:  2 x 5 pin to pap

After reading up on this one, I decided it would be my new control ball for short patterns and really beaten up shots.

Out of the box, I took it to 4000 Abralon and polished with Storm Xtra Shine.  I really want it to get through the heads…

I took this to a tournament where they were putting out Cheetah and assumed this ball could be an early option.  With the volume they put out, it was not a first-out-of-the-bag option.

During the practice session, using multiple balls, I found that after the shot was getting worn down, the Rumble rolled quite well out where the pattern is supposed to be played.  I was able to set the ball around 6-7 and send it out to anywhere from 1-3 and it was quite controllable and made a nice recovery.  With the polish it made it through the heads and was not too sharp at the end of the pattern.  After the practice session, I assumed that by game 4 or 5, I would be using this ball.

When the actual tournament started the next day, the pattern started off a bit tighter than the day before.  Cycling through my equipment as necessary, I didn’t use the Rumble until game 6 and was only able to use it for about one game.  When I was able to use it, I was quite impressed how well it handled the beat up outsides and carry down from the urethanes we had been following.  The Rumble actually allowed me to open up the lane a bit more that I would have expected.  I really didn’t want to put it down for game 7, but it was covering too many boards and moving left on a beat up Cheetah wasn’t going to help my game.

All in all, with my layout, the ball was quite clean and very smooth.  The Rumble carried very well and I am looking forward to using it on a variety of patterns.

A very nice addition to my tournament arsenal.

LANE CONDITION

Length: Various conditions

Volume: Various volumes

Type (THS, Sport Pattern etc):Various Patterns


The Roto Grip Rumble is HP-2 line along with the Shatter and the Wrecker. The Rumble is a Solid cover stock that complements the Shatter which is a pearl cover stock and Wrecker which is a Hybrid cover stock. The Rumble does not have the skid flip motion of the Shatter or the Wrecker but it does have decent length and a very continuous backend motion.

The Layout that I used for the Rumble is 45 X 5 ½ X 45 with an X hole 7 inches from the center of my grip or the Pin Above the fingers with a 7 inch hole. My PAP is 5 5/8 over and ¾ up, rev rate around 300, ball speed around 15MPH and I am right handed.

For my review I threw the Rumble and the Shatter and compared the differences. Both balls have similar layouts (Pin over the fingers with an x hole) and I kept them at box finish so with the Rumble being at 2000 and dull and the Shatter at 1500 and Polished there was a noticeable difference in length. The Rumble rolled earlier and more continuous were as the Shatter was a more Skid Flip ball motion. On the Typical House Pattern were I was throwing the two balls, I was farther left with my feet and my target line was also a little farther left with the Rumble compared to the Shatter. The reason is the Rumble at box surface needs some oil in the front part of the lane in order to store energy for the best results. I decided to polish the Rumble and see what would happen. The polished Rumble did skid more through the front part of the lane and more energy for the break point. However, the continuous ball motion was still there compared to the Skid Flipping ball motion of the Shatter.

I also used the Rumble on various tournament conditions and was surprised by the versatility. The Rumble is a solid ball that gives you enough length and backend motion to use when the pattern is “tricky” or transitioning. My best results have been later in the block (games 3 to 4) especially on medium length patterns with medium volume. What I have noticed is that for me it is a good in between ball. When the Disturbed or IQ solid is too much ball but a pearl cover is too jumpy… That is where the Rumble fits for me. The Rumble provides that consistent but strong ball motion. 

The Rumble will always be in my bag when I going to a tournament.


Likes: Strong continuous ball motion

Dislikes: Maybe a little early sometimes


PICTURES AND/OR VIDEOS

My Axis is 4 7/8 right, ¼ up, my speed is average and I would consider myself with higher revs but more up the back.  So not a cranker but not really straight either.

Drill pin 4” from PAP and CG 4 ½” from PAP.

I was looking for a strong, even, heavy roll with this and with my release that’s what I got.  I’ve used it on heavy oil patterns that I played straight through the fronts and it rolls great.  It starts turning well at mid lane and keeps on going.  The ball has a lot more back end reaction than I expected.  I’ve put it as low as 1000 grit on this ball and love it on oil, even the PBA 50’ pattern.  For oil this is probably my favorite ball.  I’ve even had success on wet house patterns.  For an even, predictable roll this ball is great.

Hand: Left
Ball Speed: 16-17mph
Ball Weight: 15lbs
PAP: 5 left 7/16 up
Degrees of Tilt: 17
Layout: 4 ½ x 4 ½ x 3 ½

The Rumble is a great edition to the Roto Grip mid to low performance line up. With the solid cover stock and the new Late Roll 51 weight block it is the smoothest reaction ball in the HP2 line up. The Rumble has the pin drilled into the ring finger with the cg in and no hole. I am able to play straight up the boards which I usually cannot do with a solid but with it being a weaker (but still strong) solid than all the other solid balls I have it is very versatile, predictable and a smooth back end motion. Once the lanes open up and the outside line is starting to dry up and the Rumble starts to jump I am able to move more right to my A game and does not over read but keeps a good line until it gets to the back end and makes a smooth turn with a lot of power for a mid to low end solid. The Rumble is a great ball for someone who wants something smooth but not super strong at a lower price.

If you have any questions about the Rumble email me at garrett.richardson@pinolebowlerssupply.com

Garrett Richardson
Storm/Roto Grip Amateur Staff
Vise Inserts Amateur Staff
Pinole Bowler’s Supply
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The Roto Grip Rumble is a solid covered ball in the HP2 line and is the follow up to the Shatter and Wrecker bowling balls. The Rumble has a different core shape called Late Roll 51. This produces less flare than the Neutron core, and an overall more controllable reaction. The Rumble has the 55M cover and comes from factory with a 2000 abralon finish and is orange and black. The Rumble has an RG of 2.55 and a differential of .030 in 15lb balls.
The Rumble is much more controllable than the Wrecker. It allows me to play straighter angles through the front of the lane (with some volume up front), and just smoothes out the backend reaction. There are times when you need this kind of reaction, especially when the lane is playing a little tricky, and you just want to control the pocket and leave makeable spares when you miss. The Rumble is a ball that would be good for the “bench mark” tag, as it is predicable and continuous. The Rumble is also a good step down from the Disturbed, when you still need surface on your ball and don’t want a lot of change of direction in the back part of the lane.
There are plenty of bowling balls on the market that cover lots of boards and make for high risk high reward bowling. The Rumble is a ball to throw when you just want to score and keep your angles in front of you. It’s not flashy, and it doesn’t hook the entire lane, and that is a great thing.  It reminds me of what urethane rolls like when used on the proper volume of oil for a urethane ball.
The Rumble will be a great ball for just about every bowler, as long as he or she uses it in the right capacity. The high rev bowlers will get better control of the pocket as well as bowlers that have a lot of axis of rotation. Straighties will like the fact that you can go up the boards with it, and not get it to over react on the drier boards and see some “freeze” at the pocket. I’m considered a tweener, and I like the fact that I can play closer to the straighties line, and take advantage of entry angle with the Rumble. If I need to hook the lane, then I would go to a different ball, as my release strength wouldn’t afford me a very high carry percentage from inside.
The Rumble will find a home on most medium conditions, steering clear of the really dry and really oily lanes. There are lots of other balls on the market that will work for those conditions. The Rumble is just a good solid performer and gets the job done, to be plain and simple. Thank you for reading my review of the Roto Grip Rumble.

Rotogrip Rumble
PAP-5 over and ½ up
Ball Speed: 15-17mph
Rev Rate: 300-500
Right Handed
Layout:  Basic pin up with ½ side weight
Surface Preparation: OTB

What I wanted from this ball:  Late roll with a strong continuation to the pocket
Result:  Exactly what I wanted. 

Being a huge fan of the wrecker, I wanted this ball to stronger with a more violent backend reaction.  This is exactly what I got from this ball.  I didn’t alter the surface at all and went with a strong drill pattern for me.  I did not put a weight hole in this ball, but did put about ½ ounce side weight to help it move.

I tested this ball on our home wood lanes with our house pattern.  Our house pattern is a tough shot with dry heads in the middle portion of the lanes from 10-10 and a huge early backend and a hold area from 10-5 with a massive out of bounds 5 and out.

I bowled 3 games keeping this ball around the 10 board and scored great.  I managed to get great length and a hard continuing backend reaction towards the pocket.  The carry was awesome and this ball carried both light and heavy pocket hits for me.  The second set of games, I moved deeper inside playing around the 15 board and swinging the ball out to 8 board.  Keep in mind that our house patter has an out of bounds past the 5 board.  The rumble did exactly as I expected it to do.  I was able to get great length throughout the dry portion of our lanes and still get a great snap to the pocket.  I did hang some corner pins, but that is expected with our pattern due to the massive backend in the middle portions of our lanes.  I was able to get this ball a bit wide and still have recovery to the pocket as well. 

Compared to the wrecker, this ball is much more controllable and forgiving. 

Pro shop reaction:  I cannot keep this ball in stock.  As soon as I put one on display, it sells within two to three days!  This ball has a fantastic look as well.  All of my rumble customers agree that this ball is much stronger than they expected.

Recommendations:  I would recommend this ball for any bowler ranging from beginner to advanced bowlers.  The rumble would be a great benchmark ball to start out with.

Storm-Roto Grip Staff
Sean Baker
Bowl Like a Pro Shop
Paducah, Ky 42001