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Roto Grip Defiant Soul Bowling Ball

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Features of the Roto Grip Defiant Soul
Roto Grip Defiant Soul
SKU: RGBBMRFS1
Brand: Roto Grip
Category: Bowling Balls

Description: When the Defiant Soul was compared to the Edge and Defiant in testing Roto Grip found that the Defiant Soul read 19% more midlane than the Defiant Edge. They both have the same core but the newer Defiant Soul is a great combination of the best features of the solid and pearl. This ball is a great in-between giving you more length than the Defiant but less length than the Defiant Edge making this ball a little more versatile.

High Performance

Roto Grip Deifant Soul Ball Specs:
- Color: Gold & Green Pearl/Purple Solid All colors do vary somewhat from the picture shown.
- Reaction: Mid-lane Control with Strong Backend
- Coverstock: 77H™ Hybrid Reactive
- Core Type: Paragon Core
- Factory Finish: 4000-grit Abralon®
- Radius of Gyration (RG): 2.49**
- Differential (Diff): .054**
- ** RG and Diff are based off of 15 lb. balls
- Hook Potential: Heavy
- Length: Greater than Defiant - Less than Deifant Edge
- Recommended Lane Condition: Heavy Oil

What do customers think of the Roto Grip Defiant Soul?
Avg. Customer Rating:5 stars
(based on 16 reviews)
Already own the Roto Grip Defiant Soul bowling ball? Write a Review REVIEWED BY 16 CUSTOMERS sort by:
Displaying Reviews 1-10 of 16View All 16 Reviews
Displaying 16 Reviews
[6 of 6 customers found this review helpful]
5/5 Stars
WOW!!! this is a must.. By Kingpin from Nashville, TN
Reviewed on: 1/24/2013 Verified Reviewer Pros:Attractive Design, Great On Sport Patterns, Ball Rolls As Good As It Cons:Needs some oil Best Uses:Great house shot ball, Tournaments Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend                                                        DEFIANT SOUL

I took my Defiant Soul out for the real test today. I bowled on a 39' house shot. I'm a tweener rev rate around 300, ball speed 15 mph. I first took my Defiant and played 12 to 5 and it looked very good with a strong arc to the pocket. So I then took my Defiant Soul and played the lanes in the same area. Super clean through the fronts with a great big move to the pocket. Talk about hit, this ball will slap pins all over the place. I'm really impressed with this ball. I kept on moving left and never lost my backend motion. The longer I kept it in the oil, the stronger and more angular the backend reaction was. As always, Roto Grip equipment is so easy and acceptable to surface changes. I used some Reacta Clean and Reacta Shine on this ball and it just made it cleaner with more backend motion. It just got stronger and stronger. This ball made me look like I had a lot more hand. I also used it on a 39' sport pattern and took it back down to the box finish. I threw it around 9 out to 6, 7 and the ball didn't disappoint. Clean through the front and strong backend. I can see this ball traveling a lot with me to tournaments. But I don't think you could go wrong with the Defiant Soul for almost all house patterns. Was this review helpful to you? Yes / No- You may also flag this review.

[2 of 2 customers found this review helpful]
5/5 Stars
Roto Grip Defiant Soul By seanbaker from Paducah Ky
Reviewed on: 3/18/2013 Verified Reviewer Pros:Attractive Design, Flawless Surface, Great Weight, Comfortable Grip Best Uses:Local Bowling Alley, Tournaments Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend Defiant Soul
PAP – 5 over and ½ up
Ball Speed: 15-17 mph
Rev Rate 300-350
Right Handed
Layout 4x4x2
Surface Preparation: Polished

What I wanted from this Ball: Clean throughout the front portion of the lanes creating hold when the heads dried up a bit and recovery when the oil carried down to the outside portion of the lanes.

Result: Exactly what I expected. Good length and some recovery with a consistent arc.

I tested this ball on our at home house condition on our wood lanes. The house pattern is heavy oil 16-18 ft. and buffed down to 32 ft. Our typical house pattern is not an easy pattern and usually creates carry down on the outsides of the lane and a massive snap in the middle. An out of bounds typically forms quickly and the mid-lane becomes very dry.

The Defiant Soul is a hybrid cover-stock and I tested this ball on a fresh oil pattern immediately after the lanes were oiled. I started at my typical area which is 30-35 with my feet and my target around 15 board sending the ball out to the 5 board. The Defiant Soul was clean through the front part of the lane and picked up about the 30ft area down lane and gave me a great arc to the pocket. I tested this ball for 6 games. After each game I moved one board left with my stance and kept the same target area until the 4th-6th game required moving my target to 20 and sending the ball out to the 8 board due to the carry-down. This ball continued to roll clean through the front part of the lanes and kept its arcing motion on the backend. I am very impressed with this ball on our house pattern. I was able to get the ball through our dryer mid-lane conditions and even get some recovery when I sent it wide.

Compared to my Defiant and my Defiant Edge, this ball isn't as angular as my defiant but much cleaner through the front portion of the lanes. Compared to the Defiant Edge, my Defiant Soul did tend to pick up a little sooner and not flip as hard on the backend as expected on our lane condition. This is a great addition to the Defiant series and is perfect addition for my in-between ball with my Defiant and Defiant Edge.

I have Drilled up 6 Defiant Souls for various customers and have only positive feedback. This is an awesome ball!

I highly recommend to anyone purchasing the Defiant Soul first and deciding which direction to go from there when drilling up Defiant series.

Sean Baker
Roto Grip/Storm
Pro Shop Staff Was this review helpful to you? Yes / No- You may also flag this review.

[1 of 1 customers found this review helpful]
5/5 Stars
Fantastic Ball By Jeff_Mersch from Orlando, FL
Reviewed on: 3/20/2013 Verified Reviewer Pros:Attractive Design, Flawless Surface, Comfortable Grip Best Uses:Local Bowling Alley, Tournaments, Upgrade Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend Image Submitted by Reviewer:Customer Image () I decided to try a different layout with this ball. I put the pin way above my ring finger and the mass bias is right above my thumb.
The combination of this layout and defiant soul gave me a ball roll in a part of the lane I didn't have in my bag before. It is a great complement to the defiant edge. It gives me earlier roll but still strong on the backend. I ended up using this ball at the PBA regional in Pensacola on the Chameleon pattern. There was a fair amount of friction because the center had purchased a new oil machine 2 days before the tournament. This ball gave me the best look; it created a fair amount of hold for me. Also when the ball hit the pocket, my carry percentage was very high and the pins were kept pretty low to the ground.
Overall, this ball is a great additional to the defiant line. I would definitely recommend to put this ball in your bag.

Jeff Mersch
Roto Grip Amateur Staff
PBA Member Was this review helpful to you? Yes / No- You may also flag this review.

[2 of 3 customers found this review helpful]
5/5 Stars
Defiant Soul By Mikelj1a from Hebron KY
Reviewed on: 2/20/2013 Verified Reviewer Pros:Comfortable Grip Best Uses:Tournaments Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend I tested my Defiant Soul on my 39-foot house shot. This is the latest release featuring the Paragon weight block. This Defiant is offered with a 4000 grit Abralon finish Hybrid cover. With this version, I was able to play 2-3 boards deeper than with the Defiant Edge.

My Soul is drilled with the middle fingers where the pin was with the CG in the palm and the mass bias in the strong position. This ball produced about 5-6 inches of flare. With the hybrid cover, the ball skidded nicely through the heads on the fresh oil. Once the ball encountered some friction, it revved up nicely and made a predictable controlled move to the pocket. ?As with all the Defiant balls, it drove through the pin deck and devastated the rack.

The Soul has a very predictable reaction, and with the 2.49 RG and .054 differential makes it a great addition for the lower rev medium speed league player who needs that little extra to make the corner.

What I enjoyed the most about this ball is the controlled hooking reaction. It produced a nice dramatic hook to the pocket and destroyed the pins. This will be the ball of choice on medium and heavy league and tournament conditions.

The Soul is a nice ball to round out the Defiant line. This ball is a must have and a nice addition to tournament players.

Mike Johnston
Roto Grip Staff Was this review helpful to you? Yes / No- You may also flag this review.

[2 of 4 customers found this review helpful]
5/5 Stars
DEFIANT SOUL - Review By John Brodersen from Helena, MT
Reviewed on: 2/19/2013 Verified Reviewer Bottom Line:Yes, I would recommend this to a friend Image Submitted by Reviewer:Customer Image () Ball specs – 15 lbs 4 oz, 3.45 top weight, and 3.5 -inch pin.

The Defiant Soul was drilled using the dual angle method with a layout of 4 1/4 inch pin distance, 55 degree drill angle and a 65 degree VAL angle. Using Storm's drilling methodology the layout is 4 1/4 X 4 1/2 X 3 7/8 pin buffer. An X-hole was needed and was placed at the P2.5 location. The surface was left OOB which is 4000 abralon.

The HP4 line Defiant Soul, which is a hybrid, was rolled on a left over 41 foot, 24 micro-liter house condition. I threw some shots to get lined up and ended up standing 32 and targeting at 16. Once lined up the Soul made the house pattern play very easy as it struck on 16 of 18 shots. The Soul was clean through the fronts, picked up appropriately in the mids and unleashed a hard arc on the backend. The Soul had plenty of energy on the backend with hit and carry being exceptional. When comparing the Soul with the original Defiant, the Soul had more length and a stronger move down lane. When comparing the Soul with the Defiant Edge the Soul picked up sooner and was not as angular on the backend. The overall hook of the Soul was close to the Defiant and a little more than the Edge.

The Defiant Soul is a great fit between the original Defiant and the Defiant Edge. If you are only going to get one ball in the HP4 Defiant line, the Soul may be your best pick for medium/heavy to heavy conditions.

John Brodersen
RG amateur staff Was this review helpful to you? Yes / No- You may also flag this review.

[1 of 2 customers found this review helpful]
5/5 Stars
Defiant Soul is Superb! By Roto_Roller from Central Florida
Reviewed on: 3/15/2013 Verified Reviewer Pros:Strong back end, Usable On Many Conditions, Attractive Design, A Must Have Best Uses:Tournaments, Sport patterns, Local Bowling Alley Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend Weight: 15 lbs.
Pin Length: 3"
Drilling: Pin above fingers, stacked
Pattern Length: 40 ft.
Pattern Volume: Medium
Pattern Type: THS, Kegel MotR

I tested the Defiant Soul on our 40 ft. house pattern, at box finish (4000 abralon), and on Kegel "middle of the road" navigation pattern (39 ft.)

On the Kegel nav. pattern, I found the Soul to be my best piece. It came off the pattern with a strong motion to the pocket without overreacting. If I missed a board or two right, it still made a strong recovery and carried. It smoothed out the pattern for me, where others gave me more of an over/under reaction.

This ball is great on our 40 ft house pattern as well. It's a great compliment to the original Defiant. This ball gets down lane and makes a slightly later, stronger turn to the pocket. When the Defiant starts to read the mid lane too soon, I use this piece and it's like having a fresh shot again! The Soul has a very strong back end motion to the pocket. It is always in my bag, for THS or tournament patterns. I will not be leaving this ball home. It is a must have for your arsenal!

Carol Teel
Roto Grip Amateur Staff Member Was this review helpful to you? Yes / No- You may also flag this review.

[0 of 1 customers found this review helpful]
5/5 Stars
Defiant Soul Rocks! By Roto_Roller from Central Florida
Reviewed on: 3/15/2013 Verified Reviewer Pros:Strong Backend, Versatile Best Uses:Great On House Shots, Local Bowling Alley, Great On Sport Patterns, Tournaments Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend Weight: 15 lbs.
Pin Length: 3"
Drilling: Pin above fingers, stacked
Pattern Length: 40 ft.
Pattern Volume: Medium
Pattern Type: THS, Kegel MotR

I tested the Defiant Soul on our 40 ft. house pattern, at box finish (4000 abralon), and on Kegel "middle of the road" navigation pattern (39 ft.)

On the Kegel nav. pattern, I found the Soul to be my best piece. It came off the pattern with a strong motion to the pocket without overreacting. If I missed a board or two right, it still made a strong recovery and carried. It smoothed out the pattern for me, where others gave me more of an over/under reaction.

This ball is great on our 40 ft house pattern as well. It's a great compliment to the original Defiant. This ball gets down lane and makes a slightly later, stronger turn to the pocket. When the Defiant starts to read the mid lane too soon, I use this piece and it's like having a fresh shot again! The Soul has a very strong back end motion to the pocket. It is always in my bag, for THS or tournament patterns. I will not be leaving this ball home. It is a must have for your arsenal!

Carol Teel
Roto Grip Amateur Staff Member Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Excellent Ball By probwlr24 from Taylorsville, UT
Reviewed on: 3/22/2013 Verified Reviewer Pros:Flawless Surface Best Uses:Local Bowling Alley, Tournaments Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend The defiant soul is a great ball for a variety of different lane conditions. It gets through the heads clean and makes a good mid lane read with a strong finish. The Defiant series is one of the hardest hitting line of bowling balls available. The Defiant Soul is good ball for all types of bowlers. Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Fantastic Ball By Jeff_Mersch from Orlando, FL
Reviewed on: 3/25/2013 Verified Reviewer Describe Yourself:Pro Bottom Line: Image Submitted by Reviewer:Customer Image () I decided to try a different layout with this ball. I put the pin way above my ring finger and the mass bias is right above my thumb.
The combination of this layout and defiant soul gave me a ball roll in a part of the lane I didn't have in my bag before. It is a great complement to the defiant edge. It gives me earlier roll but still strong on the backend. I ended up using this ball at the PBA regional in Pensacola on the Chameleon pattern. There was a fair amount of friction because the center had purchased a new oil machine 2 days before the tournament. This ball gave me the best look; it created a fair amount of hold for me. Also when the ball hit the pocket, my carry percentage was very high and the pins were kept pretty low to the ground.
Overall, this ball is a great additional to the defiant line. I would definitely recommend to put this ball in your bag.

Jeff Mersch
Roto Grip Amateur Staff
PBA Member Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
review for Defiant Soul by seanbaker By seanbaker from Paducah, KY
Reviewed on: 3/29/2013 Verified Reviewer Pros:Comfortable Grip, Great Weight, Attractive Design, Flawless Surface Best Uses:Local Bowling Alley, Tournaments Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend Roto Grip Defiant Soul
PAP – 5 over and ½ up
Ball Speed: 15-17 mph
Rev Rate 300-350
Right Handed
Layout 4x4x2
Surface Preparation: Polished

What I wanted from this Ball: Clean throughout the front portion of the lanes creating hold when the heads dried up a bit and recovery when the oil carried down to the outside portion of the lanes.

Result: Exactly what I expected. Good length and some recovery with a consistent arc.

I tested this ball on our at home house condition on our wood lanes. The house pattern is heavy oil 16-18 ft. and buffed down to 32 ft. Our typical house pattern is not an easy pattern and usually creates carry down on the outsides of the lane and a massive snap in the middle. An out of bounds typically forms quickly and the mid-lane becomes very dry.

The Defiant Soul is a hybrid cover-stock and I tested this ball on a fresh oil pattern immediately after the lanes were oiled. I started at my typical area which is 30-35 with my feet and my target around 15 board sending the ball out to the 5 board. The Defiant Soul was clean through the front part of the lane and picked up about the 30ft area down lane and gave me a great arc to the pocket. I tested this ball for 6 games. After each game I moved one board left with my stance and kept the same target area until the 4th-6th game required moving my target to 20 and sending the ball out to the 8 board due to the carry-down. This ball continued to roll clean through the front part of the lanes and kept its arcing motion on the backend. I am very impressed with this ball on our house pattern. I was able to get the ball through our dryer mid-lane conditions and even get some recovery when I sent it wide.

Compared to my Defiant and my Defiant Edge, this ball isn't as angular as my defiant but much cleaner through the front portion of the lanes. Compared to the Defiant Edge, my Defiant Soul did tend to pick up a little sooner and not flip as hard on the backend as expected on our lane condition. This is a great addition to the Defiant series and is perfect addition for my in-between ball with my Defiant and Defiant Edge.

I have Drilled up 6 Defiant Souls for various customers and have only positive feedback. This is an awesome ball!

I highly recommend to anyone purchasing the Defiant Soul first and deciding which direction to go from there when drilling up Defiant series.

Sean Baker
Roto Grip/Storm
Pro Shop Staff Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Roto Grip Defiant Soul By Erik Ramos from Altamonte Springs, FL
Reviewed on: 3/31/2013 Unverified Pros:Attractive Design, Great Weight, Comfortable Grip, Flawless Surface Best Uses:Tournaments, Local Bowling Alley Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend When the New Defiant Soul first arrived at my door, I was very puzzled on how I was going to drill it. I havent had much success with asym. cores in the past, so i was going to experiment. I drilled it 5x5x1 and was finally able to get a clean smoother roll through the front, with a nice aggressive move down lane. I will definitely drill more asym. core much weaker from now on. Another great addition to the Roto Grip family!

Erik Ramos
Storm/Roto Grip Staffer Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Defiant Soul By probwlr24 from Taylorsville, UT
Reviewed on: 3/31/2013 Verified Reviewer Pros:Great Weight, Attractive Design, Flawless Surface, Comfortable Grip Best Uses:Local Bowling Alley, Tournaments Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend Weight 15lbs.
Pin length 3"-3.5 "
Drilling- 4x4x2
The defiant soul is a great ball for a variety of different lane conditions. It gets through the heads clean and makes a good mid lane read with a strong finish. With simple changes to the coverstock we were able to play multiple lines and angles. We drilled up 2 with interchangeable thumbs and had "tweeners" as well as "crankers" throw the Defiant Soul (Bowling on a THS) they all had positive feedback on this ball. Nice to have a go to ball in the bag! On a longer pattern the Defiant Soul still read the midlane very well and was still very angular off the breakpoint, we really like the ball roll on the Soul. Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Awesome Addition to Your Arsenal By nibrocmc from Louisville, Ky
Reviewed on: 4/7/2013 Verified Reviewer Bottom Line:Yes, I would recommend this to a friend I throw this ball on THS, and I recommend this ball because of the forgiveness it gives. I drilled this ball with the pin above my ring finger with the CG in line. It's very aggressive and opens the backend of the lanes up. This ball reads the fronts so smoothly; it never jumps or reads early. I left the out of the box finish on the ball so I could play deeper in the oil. When I put a little polish on the ball, it allows me to open the backend of the lane up giving me more room for error, and still carriers great. I have seen nothing but great results with this ball; the Defiant Soul would be an awesome addition to your arsenal Was this review helpful to you? Yes / No- You may also flag this review.

4/5 Stars
Roto Grip Defiant Soul By Big Mike from Columbus, OH
Reviewed on: 4/9/2013 Verified Reviewer Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend Lay Out: 4 3/4" from PAP at 45* PAP angle and 60* VAL angle. Dual angle measurement would be 45/4.75/60. I have a 7/8" & 2" deep weight hole in the P3 position.

Ball Surface: I started box finish which is 360/500/4000.

Lane Condition Observations: I have thrown this on a couple of different patterns: Our league pattern which is around a 38' shot and I also threw this on our state tournament shot that was a 40' modified house condition. On our league pattern, the OOB finish was too early off the spot. I had to get inside of the oil line to get the ball down lane at all. When I did this the backend move was still very strong and the pins danced around the deck quite a bit. On the modified 40' house pattern, this ball came to life. The Soul rolled up very strong on the back end and even gave me some area to the right of target. The longer and more blended pattern is a better place to put the Soul on the rack. Our house condition is more medium length and medium volume and the Soul would need a smoother surface to compete better on that condition.

Other Ball Comparisons: I did get to throw it some side by side with my Defiant Edge, Disturbed, and Nomad Dagger. The Edge pushes about 3-5 foot further down the lane and was a good "ball down" option when the Soul started to check up to early as it had a similar look on the lanes. The Disturbed was very similar in that is was early reading, but the Soul pushed thru the front of the lane a little better. I would recommend "balling up" to the Disturbed if your Soul is not quite making the corner or loping too long off the spot. The Dagger was longer than the Soul and smoother/earlier than the Edge. The Dagger was not a good comparison ball because it is in an entirely different category and would need major surface to handle the volumes the Soul effortlessly takes on.

Final Thoughts: I see a good looking ball that is starting to make its way on the ball returns here in central Ohio. I am myself going to punch one up with a pin high layout and try to get a "stage" of reaction similar to the Defiant Edge that I am throwing quite a bit lately. Out one of these in your bag if you need something to bridge the gap from your stronger balls to your medium reacting balls. Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
Defiant Soul never leave home without it By Dan Schaden Jr from Essex, MD
Reviewed on: 4/12/2013 Verified Reviewer Pros:Great Weight, Attractive Design Best Uses:Tournaments Describe Yourself:Pro Bottom Line:Yes, I would recommend this to a friend The Defiant Soul is the most readable bowling ball that I have thrown in years. The layout that I used was 60 X 5 ½ X 70 or pin under the fingers with mass bias in the strong position roughly 1 ½ from the center line with no hole. My axis point is 5 5/8 over and ¾ up with not a lot of axis tilt and my ball speed is around 15 mph.

The Defiant Soul's arching nature will come in play on the short to medium and tough/flatter sports patterns for me where readability is key.

The first pattern that I threw the Defiant Soul on was a typical house pattern with low volume and about 36 feet in length. The Defiant Soul gave me the best reaction on the fresh than any other ball that I have thrown before. The over/under that I usually have was gone! I know that house patterns are easier but for me being a tweener the first game is usually adventure! The Defiant Soul is a readable bowling ball but has enough guts to throw pins around.

The next pattern that I used the Defiant Soul on the Viper pattern because it blended out the over under at the break point on the fresh. The Defiant Soul is smooth enough to blend the wet/dry but is strong enough to move left and follow the breakdown and will get through some of the carry down. I started the day playing around ten with modest angles through the front to the last game (game 8) playing between 20 and 15 with confidence. For me, the Defiant Soul is not a send the ball right and watch it turn sideways type of ball. Out of the box the Defiant Soul will go longer than the Disturbed but not as long as a Shatter. The Disturbed and Shatter are more violent at the break point while the Defiant Soul is more readable.

The defiant Soul is my benchmark ball and will be in my bag whenever I bowl.

Dan Schaden Jr
Storm/ Roto Grip Staff
Vise Grip Staff Was this review helpful to you? Yes / No- You may also flag this review.

5/5 Stars
just enough bang for your dollar By Hollywood Hoffman from San Diego , Ca.
Reviewed on: 4/14/2013 Unverified Pros:Great on heavy oil, Attractive Design, Great Weight, Flawless Surface Cons:Flaws In Surface Best Uses:Local Bowling Alley, League bowling Describe Yourself:League Bowler Bottom Line:Yes, I would recommend this to a friend This is one of the best out of the hand balls, smooth release but still gets down the lane and when it breaks to the pins it explodes. Lots and lots of pin action and back end. Was this review helpful to you? Yes / No- You may also flag this review.

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