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Roto Grip Grenade Bowling Balls

 
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Grenade Specs

Product ID: 8472
Release Date: 06/09/2010
Perfect Scale: 131.5
Performance: Advanced Performance(6)
RG: 2.58
Differential: .040
Flare Potential: 3"-4" (Medium)
Durometer: 78-80
Lane Condition: Medium
Finish: Matte
Coverstock: Urethane
Coverstock Name: Retrothane
Factory Finish: 2000 Grit Abralon
Color: Navy Blue
Core Type: Symmetric
Core Name: Photon
Quality: First Quality


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Grenade:
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MSRP:
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$ 149.99
$ 89.99
$ 60.00 (40%)

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Are shorter oil patterns stopping you in your tracks? Sometime reactive resin is just too much ball. That's where urethane Grenade comes in!

The Retrothane is a traditional urethane coverstock that will help you tame even the most scorching lane conditions. As witnessed on the PBA Tour and in World Championship events, urethane is still effective today.

With a medium RG (2.58) and medium differential (.040), the Photon ™ core utilized in both the newly released Riot and Dark Star, is the perfect foundation for the new Grenade.

Redefine your arsenal with the new Grenade and know that no matter what they throw at you, Roto Grip has you covered.

Roto Grip - We're pulling the pin, tossing the Grenade and shaking it up.


The Perfect Scale™: Helping Bowlers Make Better Decisions. Because each manufacturer uses a different method for indicating a ball's hook potential, bowlingball.com developed a way for the consumer to compare bowling balls across all manufacturers.
See what other people are saying about the Grenade Bowling Balls by reading customer reviews

Customer Reviews          Average: 4.71Write a Review    Read all 17 reviews

I Love It
 
71% (12 of 17)
I Like It
 
29% (5 of 17)
It's Ok
 
0% ( of 17)
I Don't Like It
 
0% ( of 17)
I Hate It
 
0% ( of 17)

Roto Grip Grenade Reviewed by: bowlingball.com reviews (5 stars)

1 of 1 people found this review helpful.

About the Bowler
Bowling Hand    Right Handed
League Average    215
Ball Speed    Medium
Style    Tweener
PAP    5 1/8 right 1/8 up
 

Click Layout Image to Enlarge


Roto Grip is pulling the pin, tossing the Grenade and shaking it up.

Pin to PAP(5 1/8" over 1/8" up) - 4 1/2" under ring finger
Mass Bias Position - n/a
CG Placement - lower right quad.
Balance Hole - 1" x 2" from center of grip through cg on VAL

Surface Preparation - Out of Box (2000 grit Abralon)

What I Was Looking For In This Ball Layout:
It has been a long time since I threw a urethane cover ball. When say a long time I mean like 10+ years.

I figured I would use one of my favorite layouts so I would have some base line to go off of and see what happened. I was hoping that it would be an aggressive enough layout to get a decent read on a fresh pattern. I know urethane tends to roll really strong and kind of set at the break point as opposed to reactive stuff the continues to flip through the pins.

My logic was this layout would start the ball up nice and strong and give me a little more continuation down lane before it set up at the break point.

What I Ended Up With in the Ball and Layout:
I have to say that I am impressed with my knowledge of urethane. :-) This ball did exactly what I thought it would. The first few shots I threw with it was a reality check that this was not reactive and I had to jump right. After I got in the right part of the lane the ball rolled really good. I can see how some peoples game developed from throwing urethane because you cant really do what you would normally do with reactive balls with your hand. Once I started getting right up the back of the ball of adjusted my ball speed I loved the ball motion.

Immediately I started thinking of conditions this would work great on and different layouts I could use on this ball. Since the ball does not over react or over read friction you can get pretty creative. I then started to realize why you saw so many Storm Naturals on tour last season. Pros must love having a good urethane ball they use during those brutal qualifying rounds.

All in all I think the addition of a urethane ball to your bag is a smart choice and the Grenade is the one to go with.

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Roto Grip Grenade Reviewed by: Charles blac (4 stars)


 
Too soon for I love it
But,
first game rolled was a 289 - 743 series
lot of oil on lanes
played 9 board stright up, no swing
15 pound hit as good as my best 16 pound


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Roto Grip Grenade Reviewed by: RG850SS (5 stars)


About the Bowler
Bowling Hand    Right Handed
League Average    208
Sport Shot Average    190
Ball Speed    Medium
Style    Tweener
 
A Ball for the DRyer/Lighter conditions/shorter patterns. A must Ball for your tournament arsenal. On the shorter patterns reads the lanes without over reaction. Smooth and Precictable RG850SS

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Roto Grip Grenade Reviewed by: Moonslefty (5 stars)


About the Bowler
Bowling Hand    Left Handed
League Average    220
Sport Shot Average    205
Ball Speed    Fast
Style    Cranker
PAP    5 by 1 1/8
 
I laid out my grenade 70/5/30

This layout works great on this ball, it allows me to stay left when I am feeling lazy and don't want to move deep inside, which is a good thing. Sometimes after working the pro shop all day, I don't want to have to think alot when I am bowling. When I am in this mood, I just grab my grenade and stand left and just play in the track, which is really fun sometimes.

The grenade is super clean through the fronts and doesn't give that big back end reaction, which I what I need and want some of the time. I can see myself using this ball more than I imagined.


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Roto Grip Grenade Reviewed by: YANKEEMAN (5 stars)


About the Bowler
Bowling Hand    Right Handed
League Average    215
Ball Speed    Medium
Style    Tweener
PAP    5 1/4" right 1/2" down
 
The Roto Grip Grenade has the attributes of two of my all-time favorite balls. Its old school urethane reminds me of the old X-2 roto star. it doesn't overreact in the dry and is excellent for shorter oil patterns in the 40' range.
What makes this ball unique is the old silver streak weight block which gives the ball a little extra change of direction and hitting power.
I drilled my Grenade 4 x 4. I'm an old school stroker tweener 14/15 revs and 15 mph. This ball lets me control the pocket. It keeps the pins low on the deck and can rip racks more than expected. Its also a good spare ball on heavier oil conditions.


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Roto Grip Grenade Reviewed by: MSUHoss300 (5 stars)


 
I drilled my Grenade a couple of weeks ago. The layout I used is an old school layout, axis leverage. The pin is 3 3/8 from my axis and is on my mid-plane. The cg is on my axis point with a 1 1/8 giant hole drilled through it. Being a tournament bowler, this ball is strictly meant to use on low volume short patterns. I have used it a few times now on a few different Cheetah patterns. This ball allows me to get on top of the friction and stay as close to it as I want, it never over-hooks. The reason this ball is so effective is as the games pass you don't have to change zones. Your adjustments with this ball will be to move right and slow your ball speed down while increasing your rev rate as the oil carries down the lane. Very impressed with this ball, if I am bowling on a short pattern, this ball will be in my bag. Check out the detail at www.rotogrip.com

David O'Sullivan


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Roto Grip Grenade Reviewed by: RonCase823 (4 stars)


About the Bowler
Bowling Hand    Right Handed
League Average    241
 
Grenade Ball Review - written by: Ron Case (RotoGrip Staff)

My Axis is 5 5/8 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.

Drilled Pin & CG 4” from PAP.

Well it’s urethane and the definition of urethane should be, friction needed.

If you bowl tournaments and the lanes break down we all need this ball. It’s very smooth and predictable. It has no sharp movement which can help you when the lanes are fried.

If you only bowl on house shots you will need a lot of hand to see much movement here.

Honestly with my game I didn’t think I would ever need urethane again, but I wish I had it last year in league on the Broadway pattern. It would’ve worked great right up 2 board. Now I have it and I need to find another excuse.


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Roto Grip Grenade Reviewed by: kingpinwoods (5 stars)


About the Bowler
Bowling Hand    Right Handed
League Average    230
Sport Shot Average    205
Ball Speed    Medium
Style    Tweener
PAP    5-1/4" over and 1/4" up
 
OH YEAH!!!!! THIS BALL IS AWESOME. OLD SCHOOL. I TOOK THE GRENADE AND USED IT ON A 35' FLAT PATTERN. THIS BALL WAS AMAZING. IT READ THE DRY BOARDS AND MADE A NICE SMOOTH MOVE TO THE POCKET. I WAS PLAYING UP 2nd & 3rd BOARD. I KNEW THIS BALL WAS GOING TO BE GOOD, JUST DIDN'T KNOW HOW GOOD. WITH THE SMOOTHER MOVE TO THE POCKET, IT KEPT THE PINS ALIVE AND DANCING AROUND ON THE PIN DECK. THIS BALL WOULD BE A MUST FOR ANYONE, BUT THE HIGH REV PLAYERS WOULD REALLY LIKE IT. AS THE CONDITION OF THE LANES BROKE DOWN, I STAYED IN PLAY WITH THE GRENADE. GREAT JOB.

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Roto Grip Grenade Reviewed by: clashbowler09 (4 stars)


About the Bowler
Bowling Hand    Right Handed
League Average    215
Sport Shot Average    210
Ball Speed    Medium
Style    Stroker
 
The Grenade gave me a great continuous roll down the lane. I have used this ball during my league, and it is a great ball for me to use during the breakdown. I was able to maintain my target line, while balling down to the Grenade as opposed to making a drastic move inside. The Grenade also reacted great on the Cheetah pattern. It read the lanes without overreacting or rolling out on the shorter pattern.

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Read all 17 reviews

Roto Grip Grenade Bowling Balls 4.71 out of 5 based on 17 ratings. 17 user reviews.


6" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%201.jpg



5" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%202.jpg



4" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%203.jpg



3" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%204.jpg



2" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%205.jpg



1" Pin From PAP

http://cdn.bowlingball.com/images/Riot%20layout%206.jpg



Full Roller Layouts

http://cdn.bowlingball.com/images/Riot%20layout%207.jpg



http://cdn.bowlingball.com/images/Riot%20layout%20Extra%20Hole.jpg











 
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