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Selecting the Proper Ball Weight


Adults:
The weight of the ball should be roughly ten percent of your body weight. Another good rule to go by is to choose a ball that is one to two pounds heavier than the house ball you are bowling with. The reason being is that the grip on the house ball is incorrect and a custom fit ball will feel much lighter because it will be easier to hold on to.

Kids: We recommend a weight equal to their age. Please note 6 & 8 lb bowling balls are designed for kids only not adults. Some manuacturers will not warranty 6 & 8 lb balls that are drilled for adults.


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What is the Pin Placement of a bowling ball?


The pin placement of a bowling ball is the distance between the center of the core and the CG. How far the pin is from the CG will help to dictate the balls reaction on the lane.
 
The shorter pins like (0 - 2") will roll up earlier on the lane, and will have a smoother arcing motion to the pocket.
 
The longer pins like (4"+) will go much farther down the lane before starting to hook toward the pocket. The longer pins will also have a more dramatic motion toward the pins (possibly like a hockey stick shape or a skid/flip type of reaction).
 
The (2 - 4") pins are the most versatile to lay out for your ball driller allowing them to manipulate the ball path and have it roll up earlier or later depending on how they lay the ball out.
 
Why is this important?
You want to have the bowling balls natural intended reaction to match up with your drilling pattern you select for the bowling ball. If you get a short pin but want the ball to go long the ball will want to roll up early, even if you drill the ball to go long. This will cause you to have to loft the ball or push through it harder to try to get the desired ball reaction. If you would have selected the correct pin distance and applied a complementary drilling to the ball, you can throw the ball with much less effort, and let the ball do the work for you. This allows you to relax and be smooth, improving your release and scores.

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What is the Top Weight of a bowling ball?


Top weight is the amount of weight difference from the top of the bowling ball (CG) and the bottom of the ball (opposite the cg).

In general their will always be more weight to the top of the ball (CG). This is due to the fact that when you drill finger holes into the ball you are extracting weight from the ball (generally 2 ounces or more depending the hole sizes and the density of the core) and it was initially designed to keep the ball balanced after it was drilled. 

Balls with lower initial top weight were generally more stable after drilled than those with higher top weights due to the fact that their was so much weight left over after drilling. This created imbalance and often time added length and backend reaction for early three piece (Pancake weight block) bowling balls.

Top weight by today's standards is not nearly as important because a majority of the weight mass of most bowling balls is closer to the center of the ball than the shell and top weight has less of an effect because ball motion is more about the placement of the weight block itself and not the static weight mass. Top weight these days usually dictates hole size for those off label drillings.


What does this mean in selecting the correct top weight?

2.5 or less - Is for standard drilling techniques. It is also used for advanced drillings where moving the cg further off center of span creates a stronger drilling. You may not needing a weight hole with this type of drilling but depending on how far the cg is moved you may need a weight hole.

2.5 to 3.5 - Is great for normal layouts, a weight hole is not typical for this top weight. Stronger drillings may require a weight hole.

3.5 or more - This top weight is good if you want the ball to push more (go farther down the lane) while adding backend motion, but only if the ball driller knows and incorporates this into the drilling.

It can also be used for placing a big weight hole in a ball because it adds static weight to the drilling. This means you can use a stronger drilling than normal but make it legal by adding a weight hole to remove excess top weight (you can only have 1 oz of top weight remaining after drilling).

***NOTE: These are just basic descriptions to what top weight can do. There are many more scenarios for each top weight and what is capable with each different top weight range. Please discuss with your ball driller how they plan to drill you ball to get a better idea if they plan to use a weight hole or not to achieve the ball reaction you desire. There is no way to guarantee a ball will not need a weight hole depending on the top weight selected, the ball layout will determine that.


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Drilling Protection Plan


If your new ball cracks while being drilled by a pro shop, CheapBowlingBalls.com will replace your ball free of charge! Manufacturers' warranties typically do not cover for cracking during drilling and drillers are not held responsible for their mistakes or defects in the ball.

*Ball must be purchased from CheapBowlingBalls.com
*Ball must be drilled within 11 days of receiving it (Extended to Feb 1, for purchases made between Black Friday and Christmas)
*Protection must be purchased before the ball is drilled
*Ball pictures must be sent for inspection and the receipt for drilling charges included also
*We pay shipping back to you


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Extended Warranty


Valid for 2 full years from date of purchase. Covers manufacturing defects of balls, bags & shoes.

This warranty does not cover incidental costs of replacement including, but not limited to; freight, measuring, and drilling.


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Shoe Size Charts

900 Global, Brunswick, Dexter and Storm bowling shoes run true to size.

Right Handed Shoes: Made for bowlers that bowl with their right hand because the slide pad is on the left shoe, which is the foot you slide with.

Left Handed Shoes: Made for bowlers that bowl with their left hand because the slide pad is on the right shoe, which is the foot you slide with.

Uni-sole Shoes: These shoes can be used for right or left handed bowlers because the slide pads are on both feet.



Don't know your shoe size? Do the following...

To get the best fit and comfort, we suggest measuring your feet each time you purchase a new pair of shoes because your feet will change during your lifetime.

1. Get a blank piece of paper, a pencil and a ruler or tape measure.
2. Put on the pair of socks you intend to wear with the shoes you are ordering. Through the course of the day, your feet will swell so it's best to measure them at the end of the day.
3. With the paper placed on a hard floor, sit down in a chair and place your foot flat on the paper. Lean forward, putting more weight onto the foot you are going to measure. As you probably know, your feet are different sizes so be sure to measure your larger foot.
4. Holding a pencil vertically, place a mark at the end of your heel. Place another mark at the tip of your longest toe.
5. With the ruler or tape measure, measure from the heel to the tip of your longest toe.



To Find Your Width:

Measure the distance between the two widest points on your foot. Reduce this number by 5 mm, or 1/5-inch. The result is the number you will use to determine your foot width.

To find your size, use the inch-to-size table. For example, if you are a man and your foot measures 10" long, you will wear a U.S. size 8 shoe. If you are between measurements, size up to the next larger size. It is easy to add a pair of socks to take up a little extra room but very difficult to make shoes that are too small comfortable.

Note: Just because you are a size 9 in one brand doesn't necessarily mean you are going to be a 9 in another. Footwear sizes and shapes vary from brand to brand. Please keep this in mind.
 

( Men's ) Sizing Chart

Heel to toe
Length
(in inches)

Heel to toe
Length
(in Cm.)

Size (USA)

Narrow Width
(B or C) for
this Size

Medium Width
(D) for
this Size

Extra Wide Width
(2E or 3E) for
this Size

9 5/16

23.7

6

3 2/16

3 8/16

3 14/16

9 1/2

24.1

6 1/2

3 3/16

3 9/16

3 15/16

9 11/16

24.6

7

3 4/16

3 10/16

4

9 13/16

24.9

7 1/2

3 5/16

3 11/16

4 1/16

10

25.4

8

3 6/16

3 12/16

4 2/16

10 3/16

25.9

8 1/2

3 7/16

3 13/16

4 3/16

10 5/16

26.2

9

3 8/16

3 14/16

4 4/16

10 1/2

26.7

9 1/2

3 9/16

3 15/16

4 5/16

10 11/16

27.1

10

3 10/16

4

4 6/16

10 13/16

27.5

10 1/2

3 11/16

4 1/16

4 7/16

11

27.9

11

3 12/16

4 2/16

4 8/16

11 3/16

28.4

11 1/2

3 13/16

4 3/16

4 9/16

11 5/16

28.7

12

3 14/16

4 4/16

4 10/16

11 1/2

29.2

12 1/2

3 15/16

4 5/16

4 11/16

11 11/16

29.7

13

4

4 6/16

4 12/16

11 13/16

30.0

13 1/2

4 1/16

4 7/16

4 13/16

12

30.5

14

4 2/16

4 8/16

4 14/16

12 3/16

31.0

14 1/2

4 3/16

4 9/16

4 15/16

12 5/16

31.3

15

4 4/16

4 10/16

5

 

( Women's ) Sizing Chart

Heel to toe
Length
(in inches)

Heel to toe
Length
(in Cm.)

Size (USA)

Narrow Width
(AA) for
this Size

Medium Width
(B) for
this Size

Wide Width
(D) for
this Size

Extra Wide
Width (EE)
for this Size

8 11/16

22.1

5

2 13/16

3 3/16

3 9/16

3 15/16

8 13/16

22.4

5 1/2

2 14/16

3 4/16

3 10/16

4

9

22.9

6

2 15/16

3 5/16

3 11/16

4 1/16

9 3/16

23.3

6 1/2

3

3 6/16

3 12/16

4 2/16

9 5/16

23.7

7

3 1/16

3 7/16

3 13/16

4 3/16

9 1/2

24.1

7 1/2

3 2/16

3 8/16

3 14/16

4 4/16

9 11/16

24.6

8

3 3/16

3 9/16

3 15/16

4 5/16

9 13/16

24.9

8 1/2

3 4/16

3 10/16

4

4 6/16

10

25.4

9

3 5/16

3 11/16

4 1/16

4 7/16

10 3/16

25.9

9 1/2

3 6/16

3 12/16

4 2/16

4 8/16

10 5/16

26.2

10

3 7/16

3 13/16

4 3/16

4 9/16

10 1/2

26.7

10 1/2

3 8/16

3 14/16

4 4/16

4 10/16

10 11/16

27.1

11

3 9/16

3 15/16

4 5/16

4 11/16

10 13/16

27.5

11 1/2

3 10/16

4

4 6/16

4 12/16

11

27.9

12

3 11/16

4 1/16

4 7/16

4 13/16

 

( Kids' - boys & girls ) Sizing Chart

Heel to toe
Length
(in inches)

Heel to toe
Length
(in Cm.)

Size (USA)

3 5/6

9.7

2T

4

10.2

2.5T

4 1/6

10.6

3T

4 1/3

11

3.5T

4 1/2

11.4

4T

4 2/3

11.9

4.5T

4 5/6

12.3

5T

5

12.7

5.5T

5 1/6

13.1

6T

5 1/3

13.6

6.5T

5 1/2

14

7T

5 2/3

14.4

7.5T

5 5/6

14.8

8T

6

15.2

8.5K

6 1/6

15.7

9K

6 1/3

16.1

9.5K

6 1/2

16.5

10K

6 2/3

16.9

10.5K

6 5/6

17.4

11K

7

17.8

11.5K

7 1/6

18.2

12K

7 1/3

18.6

12.5K

7 1/2

19.1

13K

7 2/3

19.5

13.5K

7 5/6

19.9

1K

8

20.3

1.5K

8 1/6

20.7

2K

8 1/3

21.2

2.5K

8 1/2

21.6

3K

8 2/3

22

3.5K

8 5/6

22.4

4K

9

22.9

4.5K

9 1/6

23.3

5K

9 1/3

23.7

5.5K

9 1/2

24.1

6K


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Shoe Size Protection Plan

 

If customer selects UPS for original shipping, CheapBowlingBalls.com will send you one UPS return label to get the shoes that do not fit back to us, and for the correct shoe size to be resent back to you one time only.

If customer selects USPS for original shipping, the customer will be responsible to ship the shoes back to us using USPS Standard Post and we will credit the amount of shipping back to you. CheapBowlingBalls.com will then send the correct shoe size back to you one time only using USPS Standard Post.

The shoe size protection plan must be purchased at the same time as the shoes. If ordering multiple pairs of shoes only the pair(s) which purchased the shoe size protection will be honored.

Shoe Size Protection Plan is valid only for the same model shoe you purchased just in a different size. You may not switch shoe models.

Valid only in the Continental US.


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Shoe Size Protection Plan

 

If customer selects UPS for original shipping, CheapBowlingBalls.com will send you one UPS return label to get the shoes that do not fit back to us, and for the correct shoe size to be resent back to you one time only.

If customer selects USPS for original shipping, the customer will be responsible to ship the shoes back to us using USPS Standard Post and we will credit the amount of shipping back to you. CheapBowlingBalls.com will then send the correct shoe size back to you one time only using USPS Standard Post.

The shoe size protection plan must be purchased at the same time as the shoes. If ordering multiple pairs of shoes only the pair(s) which purchased the shoe size protection will be honored.

Shoe Size Protection Plan is valid only for the same model shoe you purchased just in a different size. You may not switch shoe models.

Valid only in the Continental US.


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Special Instructions


Please add any special notes you have regarding Weight, Pin Placement, Top Weight or any other requests you have for us.

Please give us some room when requesting ball specs, we ask for:

2 oz margin for Gross Weight (EX. 15.1-15.3 Gross)
1" margin for Pin Placement (Ex. 3-4" Pin)
1 oz. margin for Top Weight (Ex. 2.5-3.5 oz Top)


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  • Gravity Evolve Bowling Ball, 12-15 lbs (Closeout)
  • Shape-Lock HD Core

SKU: S227
Reg. Price: $269.95 Our Price: $174.95 $149.95
[?]
 
Special Instructions:
[?]
[?]
Quantity:
1187 units available

Description 

Storm Gravity Evolve Bowling Ball


The game has changed and so should we. Stepping back, we realized amateurs and professionals around the world have been clamoring for a heavy-rolling, fast-migrating core akin to one of the most famous of all-time: The Shape-Lock HD Core. This shape can power through just about anything. “HD” is short for high density, which lowers the RG and raises the differential of the weight block. And with SPEC at the helm, expect heavy roll with no shortage of higher scores and more strikes.

This shape can power through just about anything. “HD” is short for high density, which lowers the RG and raises the differential of the weight block. A higher differential translates to more flare potential, so every time the ball makes a rotation it exposes a fresh portion of coverstock material to the oil.

SPEC stands for “Storm Performance Enhanced Coverstock”. The intent behind this formula was to create something that withstands the rigors every bowling ball endures each time it takes a trip down the lane; namely, the friction and oil it encounters. We all know and accept that bowling balls smooth out over time, just like the tread on the tires of your car. With SPEC, you can expect consistent performance that is as tireless as it is dynamic. It’s bold, definite, and extremely potent.

Storm Gravity Evolve Tech Sheet
Storm Gravity Evolve Design Intent

Reviews

WRITE A REVIEW
Average Rating:
(based on 49 reviews)

Showing 1 - 5 of 49 Reviews:

RatingReviewerReview
by Tommy Gollick
on 2/22/2020
Gravity Evolve review by Tommy Gollick
The Gravity Evolve is the second asymmetric ball released by Storm featuring the Spec coverstock. As you may have guessed, the Evolve uses the same core from the ever popular Gravity Shift series from a few years back. The Virtual Gravity was one of the most successful balls in Storm's history so it makes sense to see a new version with such a unique cover like Spec coming to market. Using the tried and true Shape-Lock HD core combined with the hook and control of the Spec cover, gives bowlers a unique combination of board coverage with controlled shape. I drilled two Evolves. The first Evolve has a layout of 3 X 5 X 1.5 which is mainly intended for use on flatter, tougher patterns. The second Evolve is drilled 4 X 3 X 2, and more intended to be used on medium to high scoring conditions early on while the pattern is still fresh. Using both balls with the box 2000 grit abralon finish, the second Evolve only covers a couple more boards than the 3" pin Evolve, but isn't dramatically different, especially once both balls lane shine. Getting into 1000 or even as low as 500 Abralon, the 4" pin Evolve creates a much more defined move at the breakpoint, as well as about an arrow more worth of board coverage. It is very interesting how close in board coverage the two balls are with less surface, and how much different they are with a lot of surface. It goes to show how important it is to get both the layout and surface correct for a bowling ball. Even at lower grits, the 3 X 5 X 1.5 Evolve has a controlled hard arch to the pocket. This is great for challenging conditions that I want a readable reaction throughout the lane. The 4 X 3 X 2 Evolve does as expected and opens up patterns that are easier and allows me to be less than perfect and still score. The biggest take away I have with the Evolve as well as the Crux Prime, both balls using Spec cover, is that they aren't going to be big backend hockey stick shapes. The Spec cover creates traction with controlled shape for heavier volumes of oil. The Evolve isn't the typical strong response to friction at the end of the pattern like many of Storm's covers but is a reaction shape needed for hook with control. Thank you for taking the time to read my review of the Storm Gravity Evolve. As always remember to bowl up a Storm!
by Doug Cutler
on 2/22/2020
Gravity Evolve
My Name is Doug Cutler and I am Storm Staffer. I am left handed and throw between 15-16 mph. All I can say about the Gravity Evolve is WOW. Storm did great research on this ball. For this ball with this Spec Cover Stock I did not have to alter the cover stock where I bowl at for me to use it. I liked the Crux Prime but I had to bring it up to 5000 grit because it was too strong in the midlane and rolled out. The Gravity Evolve I really like because the ball got strong the more I used it. Plus it did not soak up oil that much during a set like some of the other balls like the Crux Prime. The Gravity Evolve is really clean in the mid lane and has a really strong back end reaction. If the gravity evolve starts to read to early, I would go to my Phaze 3. I have used this ball on Typical House shots, and also on Medium to Heavy Oil Patterns. I have had 1-300 Game with the Gravity Evolve. This is a ball I think you should have in your bag. This ball will be in my bag for Nationals. This is a Home Run for Storm. #stormnation Doug Cutler Storm Staffer PBA Regional Champion
by David
on 2/18/2020
Storm Gravity Evolve
I was a big fan of the original VG series balls and this is a great addition to the series. This ball is a must have for anyone that is looking for a strong core/cover combination. Some of the benefits I've seen from this ball are the ability to get the down the lane once the heads start to burn up and still get the ball to carry the corner pins. This would be a great addition to any arsenal looking for a stronger ball for the top end of their arsenal.
by Mark Castillo
on 2/18/2020
This ball is everything you read about
This ball is STRONG! If you are looking for a ball that can handle a wet or long pattern then I would look into the Gravity Evolve. With the Asymmetrical weight block and SPEC solid coverstock you will have zero problem hooking this ball. I tested this ball on a pattern called Carbon. It isn't exactly a hard pattern but it has more oil than most bowlers are use to. I adjusted my surface and this ball was turning corners and driving through the pins with ease. I gave the ball some room to breath and it had no issue making it back to the pocket. 40x4x35 was my choice for a layout. Pick one up and see for yourself! Worth every penny in my opinion! I would put this ball up against the Crux Prime all day! Thanks for reading.
by David OSullivan
on 2/18/2020
Gravity Evolve
Storm Gravity Evolve 125 x 1.5 x 50 So far the SPEC cover has been very “Diggy” and smooth rolling. Both the Crux Prime and the Pro Motion are rounder in how they motion, so when selecting the layout on this ball I wanted to compliment the design intent as well as the other balls in my arsenal. This ball is very rolly and smooth, it does not over hook off of the friction, it just rolls. For league players, this ball will blend out the wet/dry very well, it is very controllable so don’t expect skid/flip. This should be best used on heavier volumes, medium to longer lengths, and fresh oil. Speed dominant players - don’t be afraid to use lower grit surfaces and stronger pins, rev dominant players looking for a strong ball, this is the one for you!
12345678910
Lane Condition: Heavy Oil
Coverstock: SPEC Solid Reactive
Weight Block: Shape-Lock HD Core
Ball Finish: 2000 Grit Abralon
Ball Color: Gunmetal / Fire / Crimson
R.G. / Diff.: #12 - 2.59 / .029
#13 - 2.57 / .032
#14 - 2.53 / .050
#15 - 2.48 / .052
#16 - 2.48 / .048
Mass Bias Strength: #15 - 0.020
Durometer: 73-75 Rex D-scale
Flare: 6”+ (High)
Fragrance: Orange Ambrosia
Recommended Cleaner: Reacta Clean
Date Released: October 25, 2019
Manufacturer SKU: BBMTWV
Warranty: 1 Year Warranty



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