S-73 Reactive
Black/Copper Pearl
4000 Abralon
2.48RG
.054 Diff
.020 Mid Diff

The Bank: Self Righting Core (SRC) Technology

Shortened Summary

The Bank features 900 Global's newest core design “Self Righting Core” (SRC). The SRC is both homogeneous in nature and also mono-monostatic. The unique core shape contains only one stable point. Unlike all other cores in the industry the SRC core will always move and twist to its stable position regardless of how or where it is placed. It will right it self!

900 Global's testing indicated that when in rotation the core shape easily moves without resistance or hesitation in seeking the stable spot helping give the bank greater ease in transitioning through the phases of ball motion. Other cores on the market that have multiple stable, or flat spots, must expend additional energy to move off of that position and thus not efficiently and effectively optimize energy transfer to yield maximum ball reaction. The SRC, once in motion, does not need to expend additional energy to seek its sole stable position and therefore creates optimum ball reaction for the bowler.

An additional benefit of the SRC is the value of the “Moment Arm”. The moment arm measures the likelihood of a force to rotate an object about any given axis. The larger the moment arm the greater amount of loping and imbalance forces the core will have during rotation. This effect leads to increased energy retention. The SRC has the greatest moment arm available. The combination of having the greatest moment arm and only one stable point creating the least resistance gives The Bank a unique and powerful motion.

“Self – Righting Core (SRC)”:   

Merging a Unique Shape with Technological Research to Enhance Innovative Motion

 Written By: Nick Siefers

Senior Design Engineer

Nicks@900global.com This e-mail address is being protected from spambots. You need JavaScript enabled to view it

             Throughout the years many different core designs have been placed inside the bowling ball to aid and influence its path to the pins.   Designs started with no weight blocks, to simple pancake top weight slugs, then evolved into two-piece shapes followed by the addition of flip blocks and then all the way through the complex asymmetrical shapes that are currently on today’s market.  Each new progression in design often led to increased dynamic effects on how and when the ball expended its energy while traveling down the lane.  At 900 Global we have been researching and testing what is to be the next generation in core design.  The new “Self-Righting Core (SRC)” design merges a unique shape with the latest technological research to enhance innovative motion. 

            Initially the design and concept of the three-dimensional core shape was to maintain a convex shape (the shape does not bulge inwards), be homogeneous, and the defining trait was that it has only two points of equilibrium.  One point is “stable” and the other is “unstable”.  An object having this trait is defined as being mono-monostatic.  In short, if you place the object on its “stable” spot the object will remain at rest until an outside force acts upon it.  If the object is placed on its other “unstable” equilibrium point in theory it could balance on this point but the slightest movement or force will cause it to move off of that particular spot and roll around maneuvering itself until it finds the “stable” spot.  Likewise, if trying to rest on any other surface or spot the object will automatically move and seek the stable point of equilibrium.  It is because of this automatic moving and maneuvering that the phrase “Self – Righting Core” was coined.  The core design seeks to find it stable point on its own through a series of orchestrated maneuvering without any outside forces.

            The design itself was strategically challenging to develop because no shape existed in two dimensions that was both convex and contained only two points of equilibrium (one stable and one unstable).  For example, the square can balance on the center of its four sides (stable) and the intersection points of the sides (unstable) giving it a total of 8 equilibrium points.  Having multiple stable and unstable equilibrium points can be proven for all two dimensional shapes thus violating the definition of being mono-monostatic.  In three dimensions, however, there are other points of equilibrium that exist.  At these new points an object can balance unstable in infinitely many directions but only stable in one direction. The quantity of these new points depends upon the quantity of original stable/unstable points.  In simpler terms and without going into extensive mathematical detail, it was ultimately the relationship and integration of all of these concepts that allowed the true three dimensional shape with the previously discussed mono-monostatic properties to be created.

The “SRC” core design by 900 Global is shown below in Figure 1 and was designed to maintain these mono-monostatic properties. The three dimensional single density mass is so unique simply because it is stable on only one facet.  These concepts have never been tried in the bowling industry.  The core will seek to “right itself” from any position that it is initially placed.  

Figure 1: 900 Global "SRC"

Our research and on-lane testing verified that this shape inside “The Bank” increased the overall imbalance forces on each migratory axis point as the ball flared traveling down the lane compared with imbalance forces from typical core designs (asymmetrical and symmetrical) that are on the market.  These imbalance forces enable the ball to transition through axis migration and the three phases of ball motion by resisting hesitation without using unnecessary extra energy that other core shapes must use to migrate through the many stable/flat spots that they have (see core video by selecting link at the end of this article). In effect, the “SRC” core enables the ball to have increased changes in the angle per foot of lane traveled. Basically, the “SRC”, once set in motion will try and seek its stable position quicker than any other ball on the market.  By setting the core position through drillings one can allow “The Bank” to release its energy quicker and most efficiently with little or no core resistance giving the bowler maximum benefit of core dynamics.

            In an additional step to push the design and technology envelope we have also optimized this design to enhance the overall “moment of force”.  The moment of force, or moment arm, is simply the measured likelihood of a force to rotate and twist an object about any given axis.  In this example and analysis we looked at four different core designs.  Each core design was split into two halves using the center of the bowling ball as the axis line.  Based upon typical drill patterns and the migratory axis migration from the initial PAP the analysis determined how easy the top half of the core would rotate around the horizontal axis line versus the bottom half of the core.  The illustrations in Figure 2 below show the split lines with the corresponding mass of each half along with each half’s center of gravity location with respect to the horizontal rotational axis line.

The following Figure 3 shows the calculated moment arm forces and also shows the differences or imbalances between the moment arms of the top versus bottom parts of each design. Greater imbalance in moment arms is equivalent to greater amounts of loping as the core rotates traveling down the lane. The “SRC” having the greatest imbalance, in conjunction with its little to no resistance described previously, when rotating gives this core maximum dynamics, performance and efficiency in energy usage.   

A	B
C	D Self Righting Core
Figure 2: Mass Distributions of various core designs

The following Figure 3 shows the calculated moment arm forces and also shows the differences or imbalances between the moment arms of the top versus bottom parts of each design. Greater imbalance in moment arms is equivalent to greater amounts of loping as the core rotates traveling down the lane. The “SRC” having the greatest imbalance, in conjunction with its little to no resistance described previously, when rotating gives this core maximum dynamics, performance and efficiency in energy usage.   

Figure 3: Moment Arm and imbalance calculations

In conclusion, using shape contours, stable/unstable equilibrium points, precise center of gravity placements, and moment arm concepts 900 Global has once again taken the next step in innovative motion.  The new “SRC” helps give “The Bank” unprecedented reaction on the lane by releasing energy most efficiently and effectively to gain optimum ball reaction per bowler.  Integrating new technological advancements 900 Global has been able increase the overall mid-lane read and back end continuation in this product versus other products on the market today.  

BANK Program Rules and Regulations:

How to register-

Consumers:

Each consumer that purchases a Bank ball will be invited to compete in a private online free-roll satellite tournament presented by 900 Global, where the winner will receive a World Series of Poker main event seat and $1,000 cash. To register for this event consumers will need to remove the Bank card that can be found in every Bank single ball box. The Bank card needs to be completely filled out without exception. Entries must contain a valid phone number and email address. In addition to this information the consumer must attach the proof of purchase bar code to the card. This POP bar code sticker is located at the top of the single ball box, on the flap. The card must be mailed to and received by 900 Global no later than November 15th 2010. Consumers will be contacted by email with further information regarding the date, time and location of the online tournament. Consumers that purchase two or more Banks will be entered into a secondary event that will be conducted soon after in which another seat and more cash/prizes will be awarded.

Please mail all Bank entry forms to: 900 Global Attention: BANK Tournament 5005 West Avenue San Antonio, Texas 78213

Pro Shops:

Each pro shop that sells a Bank ball will be invited to compete in a private online free-roll satellite tournament presented by 900 Global, where the winner will receive a World Series of Poker main event seat and $1,000 cash. To register for this event pro shops must mail a copy of one or more invoices showing the purchase of a Bank ball, as well as print and complete an entry card that can be found here: Click here. The entry card must be completed without exception and contain a valid email address and phone number. This information must be received by 900 Global no later than November 15th 2010. Pro shops will be contacted by email with further information regarding the date, time and location of the online tournament. Pro shops that sell 8 or more Banks will be entered into a secondary event that will be conducted soon after in which another seat and more cash/prizes will be awarded. An additional seat will be given to all pro shops that sell 16 or more Bank balls for this second event. This seat must be used by another player of the pro shops choice.

Please mail all Bank invoices and entry cards to: 900 Global Attention: BANK Tournament 5005 West Avenue San Antonio, Texas 78213

Prizes:

Each tournament will have a guaranteed minimum prize pool valued at $12,500. The first place finisher will be awarded 1 entry into the 2011 World Series of Poker Main Event valued at $10,000 as well as $1,000 cash for expenditures. 2nd-9th place will receive cash payouts totaling a guaranteed minimum of $1,500 combined. 900 Global reserves the right to add additional money to the prize pool as well as expand the number of cashers beyond 9th place at any time.

Tournament Dates/Time:

The tournaments online location, dates and times will be announced on our website as well as by email to all registrants in the coming weeks. 900 Global reserves the right to make changes to the location, date and time of the event if necessary at any time.

Winners:

The winner/s of the W.S.O.P. main event seat agrees to play in the event and wear supplied apparel/patches from 900 Global on the upper right and left chest area. All winners consent to be used in any future advertisements by 900 Global.

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