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Author Topic: Tour Dynam-X  (Read 50702 times)


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Tour Dynam-X
« on: August 19, 2023, 07:48:22 PM »
Any SPI line ball with the word “Tour” in it has to be a huge success right? The new Tour Dynam-X is going to be no different. This ball features the Rondure Tour Core which is a spin off of the Rondure Core that was found in the Rubicons. This ball also has a new TourTrax Solid cover. I drilled mine to serve a different purpose in my bag, the 6 x 6 x 2 layout. I wanted something that was weaker drilled on the resin side but still was kind of quick when it saw the friction. After I first threw this ball I was completely shocked that it was still very strong and never really quit on me. I think anyone who bowls tournaments must have this in the bag because it’s going to be a great ball for the fresh because of how smooth it is. 


Michael Slatky

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Re: Tour Dynam-X
« Reply #1 on: August 24, 2023, 05:30:31 PM »
Roto Grip
Tour Dynam-X
Coverstock: TourTrax Solid Reactive
Finish: 2000 Grit Abralon
Core: Rondure Core
(14 pd)
RG: 2.52
Differential: 0.026
Int Diff: 0.016

Layout: 5 x 4 x 4 2LS
Tester:  PAP 6 1/2 R, 1 1/4 D

The Tour Dynam-X features TourTrax coverstock which provides versatility in coverstock technology. The Rondure Core is being used to add control and smoothness for a ball in the HP3 line. The ball intent is to create a ball motion not readily seen in the SPI line of bowling balls.

In comparison to my Roto Grip UC-3 and TNT the Tour Dynam-X will have much more utility in my arsenal. My UC-3 is a bit strong for a urethane type option and my TNT is a bit specific where it comes into play. The Tour Dynam-X on 40' Don Johnson showed a nice balance of length and control. The TNT in this case was good length wise, but off the spot over and under and the UC-3 had me steeper then I desired.

For me, I really desire an option for sport and league patterns where control is the key, yet I want to move away from urethane do to the earlier chacteristics of these balls during events where a lot of traffic may happen. I feel the Tour Dynam-X might be that option over balls like the UC-3 and TNT for reasons I noted above. The cover comes out at 2K from the factory so I'm debating if 3K might give it just a touch more length out of my bag once urethane is not a good option.

Anything you desire in a ball to create earlier hook and control the Tour Dynam-X is what you are looking for. These type of balls are needed and advantageous in today's bowling environment. They are also tough when looking for the right combination of length and hook strength.

I'm very excited about this particular ball being an asymmetric and initial use has shown the ball has nice predictable continuation in the hook phase. This is not what you generally see in most asym pieces. Be sure to grab a Dynam-X today. It might just be the surprise of the season.

Michael Slatky
900 Global Staff Member
York, PA


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Re: Tour Dynam-X
« Reply #2 on: August 26, 2023, 09:20:27 AM »
The Tour Dynamix has a low RG value of 2.47 a low differential of 0.026 and a medium intermediate differential of 0.010. 
Rot Grip came out with a brand-new Tour Trax Cover wrapped around a modified Rondure Tour Core.
The differential / intermediate differential has been lowered on the core as compared to what was used in the Rubicon to create a faster revving version that stays on-line easier and longer with less change of direction due to the Differential value being cut in half.
Whether you have a super high rev rate or a super low rev rate, or a rev rate somewhere in the middle, this Low RG, Low Differential, Mild Asymmetric Differential core produces a constant stable motion off your hand and all the way through the pin deck.
In comparison to the 900 Global Xponent, the Xponent is the poster child for a benchmark ball fits right in the middle of a Summit and a Tour Dynamix.  The Xponent will very smooth, continuous, and very predictable.   The Tour Dynamix is an IQ tour on steroids and will give you that drive up the hill that is not seen in an IQ tour until later in you 3 game set for league or later in an 8-game block on tour.
In the bag, will be the Summit, Xponent, Tour Dynamix and Storm Hyroad Pearl

Rick K

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Re: Tour Dynam-X
« Reply #3 on: August 27, 2023, 02:00:16 PM »
Tour Dynam-X • Roto Grip • HP3 Series
Core • Rondure Tour Core (Asymmetric)
Coverstock •Tour Trax Solid Reactive Finish • 2000 Grit-Abralon
Weight • 15 lbs. RG • 2.47 Differential • .026 Intermediate Diff• .010
Layout • 4 ¼ x 4 ¼ x 2 ¼
Tester PAP • 5” R, 5/8” D Tester Axis Tilt • 11° Tester Rev Rate • 300
Test Pattern • 42' THS (Typical House Shot) • Modified, Kegel Stone Street

Roto Grip scores another success with the release of the Tour Dynam-X.  With the new, finely tuned version of the Rondure Core called the Rondure Tour Core, combined with the new TourTrax Solid Reactive Coverstock, the Tour Dynam-X is a fantastic new ball found in the Roto Grip HP3 line. So, let's look at what makes the Tour Dynam-X so good.

Roto Grip has taken its proven Rondure Core initially found in the Rubicon series and changed the core values to produce a faster, more stable, revving version. And without a doubt, Roto Grip hit the mark with their intended changes to the new Rondure Tour Core design. Being a straighter player, I liked how the Rondure Tour core revved briskly in the mid-lane and maintained a consistent motion off the pattern without losing the strong continuation we straighter players depend on. I found the Rondure Tour core to be smooth, predictable, and extremely stable. And with that type of consistency, I had plenty of confidence rolling my Tour Dynam-X shot after shot all night in league play.

The TourTrax Solid cover is ideal for straighter and lower-rev players like me. And what I loved most about the TourTrax cover is its ability to blend the lane conditions all night long effortlessly. Whether playing straight up the second arrow or moving my line in and opening my angles, I enjoyed the comfort and stability the TourTrax cover provided, especially late at night when the pattern breaks down. And you can count on the TourTrax solid to keep you in your A game with its ability to smoothly transition its way through those dreaded wet/dry and spotty conditions that tend to take us out of our comfort zone. So, straighter and rev-challenged players like me will enjoy the confidence the TourTrax solid gives your chances of striking all night in league competition.

In closing, I found the Tour Dynam-X to be an excellent new release by Roto Grip. And the Dynam-X lives up to everything Roto Grip set out to do with its design. The Tour Dynam-X is a smooth, predictable, dependable ball that belongs in any straighter player's arsenal to keep you scoring all night in THS league conditions. So stop into your local Storm VIP Pro Shop today and have your Roto Grip Tour Dynam-X ready for the first night of league. Winning awaits you!

Rick Klimowicz
Storm Products Pro Shop Staff
Roll the Ball Pro Shop
Penndel, PA


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Re: Tour Dynam-X
« Reply #4 on: September 17, 2023, 06:57:01 PM »
Roto Grip Tour DynamX
Cover: 2000-grit TourTraxâ„¢ Solid Reactive
Weight Block: Rondureâ„¢ Tour Core (Asymmetrical)
Color: Dark Cyan/Onyx

This is a great release from Roto Grip. The technical data has benchmark sport and house pattern ball written all over it. We drilled this ball with our normal layout: tweener, 350-375 revs, 16.5mph, layout of choice is 4x4x2 (pin is above bridge). This ball is the lowest Diff and RG every created by Roto and for that reason really stands out not only in SPI but the entire bowling ball market. Pair that with the modified core seen in the Rubicon series and the TourTrax cover and you have a guaranteed winner. Comparing this ball to IQ Tour you will find it a touch later and more shape down lane, obviously created by the asymmetry of the core. On a fresh house pattern you will want to tighten up your line a bit but this in turn will still allow for some miss room. For all of these reasons this ball will fit into just about anyone’s bag whether you are a tournament player or just a fall & winter league bowler.

Kyle, Joel, & Dean Johnson
Roto Grip Pro Shop Staff Members

Jesse James

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Re: Tour Dynam-X
« Reply #5 on: September 18, 2023, 03:31:06 PM »
I am not a staffer just an average bowler, but the numbers on this piece stood out to me. I had to give it a look see. It is the ultimate paradox to me. This ball revs up early like a high performance monster but then pushes down lane rather than reading the mids. But with all this motion going on, it still turns the corner easily and is controllable much like a benchmark ball. The ball is simply amazing to me because it still hits like a high performance piece as well. RG out did themselves with this one. I've been having fun with it on various medium oil conditions and in different houses. I believe this ball would really benefit tournament bowlers mostly, but its definitely a must have ball for sure.
Some days you're the bug....some days you're the windshield...that's bowling!

Kevin Duncan

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Re: Tour Dynam-X
« Reply #6 on: November 26, 2023, 01:04:47 PM »
Roto Grip Tour Dynam-X
Layout: 4.5 x 5 x 2 Storm Pin Buffer Layout
Rev Rate: 325 rpm, 7 degree of axis tilt, 40 degree of axis rotation
Testing information: 41 foot THS (medium to light volume)
Bowling Center: Fulton Bowling Center
Kegel Machine – Brunswick Anvilane

The Roto Grip Tour Dynam-X utilizes the Tour Trax solid coverstock and the Rondure weight block. My first thoughts are control and versatility.  The Dynam-X is another option in that iQ Tour space.  The Dynam-X can be thrown from straighter angles early and deeper angles later in the blocks.  It will never be the ball to cover the most boards but can be thrown from left to right with modest board coverage.  We had the Dynamix a touch stronger than the iQ Tour, which has to be the coverstock.  The Tour Trax is a new generation solid coverstock that blends the trust-worthy Versatile Traction Control (VTC) coverstock from the Hustle line with some new additives to create a versatile bowling ball.

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Strike Ball

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Re: Tour Dynam-X
« Reply #7 on: December 18, 2023, 06:44:30 PM »
Not impressed with this ball at first. Hit it with 3k sanding pad and love the ball now!