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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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  • Rubicon
  • Rondure Asymmetrical Core (14-16 lbs)
  • Modified Triliptic Core (12-13 lbs)

SKU: RG180
Reg. Price: $204.95 Our Price: $139.95
[?]
 
Special Instructions:
[?]
[?]
Quantity:
281 units available

Description 

A drastic departure from our traditional symmetrical core or symmetrical weightblock designs in the HP3 line, the asymmetrical Rondure™ Core was developed to increase overall ball motion throughout the lane without the aid of an added balance hole. Making this part stronger than a symmetrical core, but not quite as strong as our traditional asymmetrical core designs.

Featuring our most recent formulation of eTrax™ solid coverstock technology, this cover is easily sanded or easily polished in order to meet your needs on a variety of conditions without losing traction and responsiveness to friction.

Engineered for those Medium to Medium-Heavy Oil conditions, we felt it was an absolute must to provide added core technology in this line in order to create advanced ball motion since balance holes are no longer legal in sanctioned competition.

Roto Grip Rubicon Tech Sheet

Reviews

WRITE A REVIEW
Average Rating:
(based on 43 reviews)

Showing 1 - 5 of 43 Reviews:

RatingReviewerReview
by Kyle & Joel Johnson
on 12/31/2020
Rubicon Review by Kyle & Joel Johnson
Ball Specs: Roto Grip Rubicon Cover: 3000 eTrax-S20™ Solid Reactive Weight Block: Rondure™ Core (Asymmetrical) Color: Azure/Black/Navy Review: The Rubicon is a perfect ball to roll out in the era of no balance holes. The all new Rondure core provides the shape down lane that you would typically find in a ball with a balance hole, which is now illegal in sanctioned play/competition. You may also notice that this ball is asymmetrical yet in the HP3 line. This means more bang for your buck and more versatility in your bag. Usually people associate asymmetrical bowling balls with high rev and/or high speed players. The thing that makes this ball stand out, like all “benchmark” bowling balls, is how it suits any bowler. For a high speed and high rev rate player, this ball works perfectly where the lanes start to break down but your strong asymmetrical solid is too much.
by Mike LeViner
on 12/28/2020
Roto Grip Rubicon
Layout: 50 x 5 ½ x 35 The Rubicon has become my go-to ball on medium to medium-heavy lane conditions. The combination of strong midlane and downlane continuation that this ball possesses matches up perfectly with my game, and is one of my favorite bowling balls of the past few years. With the lower mass bias differential that this ball has, it does have slightly more skid and backend when compared to an Axiom or other similar solid symmetric upper-mid performance bowling balls; because of this, it is easier to get left and go around the lane when the fronts start to dry out a bit. I get excellent pin carry with this bowling ball when used on the right lane condition. When it does get a bit too dry to use the Rubicon effectively, I can switch to my Idol Synergy.
by Chris Martinez
on 12/14/2020
The Rubicon is simply a winner!!
Ball Layout: 45 x 5.25 x 70 Finish: OOB Hands down, the Rubicon has quickly become one my favorite, more versatile balls in my arsenal for medium to heavy oil conditions. I almost passed on this ball but decided to give a shot and man I'm glad I did. I drilled this ball 5-1/2 pin that placed it under my middle finger and PSA kicked right for a controlled motion front to back. In two back to back Masters tourneys, this ball helped me lead qualifying in both those tourneys! This has such a nice controlled motion front to back and the carry is just tremendous! The shape of this block really does feel as if I drilled a 4th hole that's no longer allowed. I drilled a 2nd one pin up with less surface and once again the motion is still strong yet controllable. One of the most versatile and reliable pieces and when you see pros consistently throw this, you know it's good. Go get you one today!! Chris Martinez Storm Amateur Staff
by Daniel
on 12/13/2020
Rubicon Review
A new addition to RotoGrip’s HP3 Line is the Rubicon. The Rubicon is different because it is an Asymmetrical Bowling Ball that is not in the HP 4 Line. The Rubicon Core provides enough strength even for the lower rev player. The e Trax-S20 Solid Reactive cover stock is strong enough for the slop and can be modified to handle almost any lane condition. The Combination of the Core and Cover stock makes the Rubicon a extremely versatile bowling ball. Out of the box the Rubicon tends to start up rather quickly and has a strong distinctive motion on the backend. I had to move away from the friction and play deeper into the lane and found out that the Rubicon was no joke. I will be polishing or hitting it with a 4K pad soon. The layout I used is 5 X 6 X 1 1/2 or 60 X 5 X 25. This layout I have used in numerous asymmetrical bowling balls and it seems to help the bowling ball conserve some energy but not be ridiculous on the backend. My coordinates are 5 5/8 over and ¾ up with a lower rev rate (approx. 300) and a medium ball speed. Hindsight is 20 / 20, I should of either drilled it stronger or weaker. The Rubicon is the most readable asymmetrical bowling ball I have thrown is the past 5 years. The motion reminds me of an IQ Tour but at least 5 boards stronger. With that being said, I would love the motion if I was bowling more sport shot or challenge patterns. I will be drilling another Rubicon for sure because of the readability and dynamic backend is just too good to pass up. The Rubicon is a great addition to anyone’s tournament bag.
by Rod R.
on 12/12/2020
Rubicon ball Review
Roto Grip Rubicon is one of the newest addition to the hp4 line. It will come out of the box with 3000-grit polish and it has the e-traxS20 coverstock on it. I really like this ball when on fresh higher volumes of oil. The Rubicon reads the lanes early, for me, but not too early either. I have found out that it blends the lanes perfectly when the block begins on fresh oil. I am also able to move left later in the day, and it doesn't seem to roll out for me - it continues through the pins great. It's nice having such a big core bowling ball in my hands later in the day and still seeing it have the energy that is needed to crush the pins. My Idol is a nice step down to give a comparison to the Rubicon. I believe this would be a perfect ball in anyones bag that is looking for an asymmetrical bowling ball to start out blocks with - either house shots or sport shots.
123456789
Lane Condition: Medium to Heavy Oil
Coverstock: eTrax-S20™ Solid Reactive
Weight Block: Rondure Asymmetric Core (14-16 lbs)
Modified Triliptic Core (12-13 lbs)
Ball Finish: 3000-grit Pad
Ball Color: Azure / Black / Navy
R.G. / Diff.: #12 - 2.59 / .029 / .008
#13 - 2.57 / .032 / .010
#14 - 2.53 / .052 / .009
#15 - 2.49 / .052 / .011
#16 - 2.48 / .050 / .012
Durometer: 73-75 D Rex Scale
Flare: Medium-High
Date Released: August 31, 2020
Manufacturer SKU: BBMRUB
Warranty: 1 Year Warranty
Roto Grip Symmetric Drill Sheet

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